R&S®FPC Spectrum Analyzer User Manual (;ÜYN2) Version 05 User Manual 1178413002
This document describes the following R&S®FPC models and options: ● R&S®FPC1000 (1328.6660.02) ● R&S®FPC1500 (1328.6660.03) ● R&S®FPC-B22 Preamplifier (1328.6690.02) ● R&S®FPC-B200 Wi-Fi Support (1328.6990.02) ● R&S®FPC-K7 AM, FM, ASK, FSK demodulation (1328.6748.02) ● R&S®FPC-K42 Vector Network Analysis (1328.7396.02) ● R&S®FPC-K43 Receiver (1328.6754.02) ● R&S®FPC-K55 Advanced Measurements (1328.6760.02) The contents of this manual correspond to firmware version 1.30 and later.
Safety Instructions Instrucciones de seguridad Sicherheitshinweise Consignes de sécurité Risk of injury and instrument damage The instrument must be used in an appropriate manner to prevent personal injury or instrument damage. ● Do not open the instrument casing. ● Read and observe the "Basic Safety Instructions" delivered as printed brochure with the instrument. ● Read and observe the safety instructions in the following sections. Note that the data sheet may specify additional operating conditions.
Gefahr von Verletzungen und Schäden am Gerät Betreiben Sie das Gerät immer ordnungsgemäß, um elektrischen Schlag, Brand, Verletzungen von Personen oder Geräteschäden zu verhindern. ● Öffnen Sie das Gerätegehäuse nicht. ● Lesen und beachten Sie die "Grundlegenden Sicherheitshinweise", die als gedruckte Broschüre dem Gerät beiliegen. ● Lesen und beachten Sie die Sicherheitshinweise in den folgenden Abschnitten; möglicherweise enthält das Datenblatt weitere Hinweise zu speziellen Betriebsbedingungen.
Customer Support Technical support – where and when you need it For quick, expert help with any Rohde & Schwarz equipment, contact one of our Customer Support Centers. A team of highly qualified engineers provides telephone support and will work with you to find a solution to your query on any aspect of the operation, programming or applications of Rohde & Schwarz equipment.
R&S®FPC Contents Contents 1 Documentation Overview...................................................................... 7 2 Regulatory Information..........................................................................9 3 Preparing for Use................................................................................. 10 3.1 Unpacking and Checking the Instrument................................................................. 11 3.2 Placing or Mounting the Instrument................................
R&S®FPC Contents 12.1 Configuration Overview..............................................................................................61 12.2 Measurements and Result Displays..........................................................................63 12.3 Frequency Configuration........................................................................................... 88 12.4 Amplitude Configuration............................................................................................
R&S®FPC Contents 15.4 Amplitude Configuration.......................................................................................... 160 15.5 Sweep Configuration................................................................................................ 161 15.6 Trigger Configuration............................................................................................... 161 16 Vector Network Analyzer................................................................... 163 16.
R&S®FPC User Manual 1178.4130.
R&S®FPC Documentation Overview 1 Documentation Overview This section provides an overview of the R&S FPC user documentation. You can find it on the product page at: www.rohde-schwarz.com/manual/fpc Getting started manual Introduces the R&S FPC and describes how to set up and start working with the product. A printed version is included in the delivery. User manual The user manual contains the description of all instrument modes and functions.
R&S®FPC Documentation Overview Release notes and open source acknowledgment The release notes list new features, improvements and known issues of the current firmware version, and describe the firmware installation. The open source acknowledgment document provides verbatim license texts of the used open source software. www.rohde-schwarz.com/manual/fpc The open source acknowledgement is also integrated into the firmware (.chm format).
R&S®FPC Regulatory Information 2 Regulatory Information You can access the regulatory information in the firmware of the R&S FPC. 1. Press the "Setup" key. The R&S FPC opens the "Instrument Setup" menu. 2. Select the "Regulatory Information" menu item in the "WiFi" category with the "Enter" key. The R&S FPC shows the regulations it complies with. User Manual 1178.4130.
R&S®FPC Preparing for Use 3 Preparing for Use The R&S FPC is designated for use in industrial, administrative and laboratory environments. Use the R&S FPC only for its designated purpose. Observe the safety and usage instructions documented in the operating manual, as well as the operating conditions and performance limits stated in the data sheet. Make sure to consider the following information before using the R&S FPC for the first time.
R&S®FPC Preparing for Use Unpacking and Checking the Instrument Risk of instrument damage during operation An unsuitable operating site or test setup can damage the instrument and connected devices. Ensure the following operating conditions before you switch on the instrument: ● The instrument is dry and shows no sign of condensation. ● The instrument is positioned as described in the following sections. ● The ambient temperature does not exceed the range specified in the data sheet.
R&S®FPC Preparing for Use Placing or Mounting the Instrument Risk of instrument damage during transportation and shipment Insufficient protection against mechanical and electrostatic effects during transportation and shipment can damage the instrument. ● Always make sure that sufficient mechanical and electrostatic protection is provided. ● When shipping an instrument, use the original packaging.
R&S®FPC Preparing for Use Turning the R&S FPC on and off Risk of injury if feet are folded out The feet can fold in if they are not folded out completely or if the instrument is shifted. This can cause damage or injury. ● Fold the feet completely in or out to ensure stability of the instrument. Never shift the instrument when the feet are folded out. ● When the feet are folded out, do not work under the instrument or place anything underneath. ● The feet can break if they are overloaded.
R&S®FPC Preparing for Use Turning the R&S FPC on and off Turning on the R&S FPC ► Turn on the main AC power switch on the rear panel of the R&S FPC (position "I"). The instrument is now supplied with AC power. ● ● "Power" key is highlighted orange: R&S FPC is in standby mode (main AC power switch is in position "I"). "Power" key is highlighted green: R&S FPC is running and ready for operation. Turning off the R&S FPC ► Turn off the main AC power switch on the rear panel of the R&S FPC (position "O").
R&S®FPC Instrument Tour Front Panel 4 Instrument Tour The R&S FPC has various connectors on the front and rear panel. 4.1 Front Panel 1 2 3 4 5 6 7 Figure 4-1: Front panel of the R&S FPC 1 2 3 4 5 6 7 = = = = = = = USB ports (type A) Headphone jack Softkeys Signal source output Function keys and alphanumeric keypad RF input Power switch Instrument damage caused by cleaning agents Cleaning agents contain substances such as solvents (thinners, acetone, etc.), acids, bases, or other substances.
R&S®FPC Instrument Tour Front Panel RF input The RF input with an impedance of 50 Ω allows you to connect a DUT to the R&S FPC. Typically, you connect the DUT with a cable and an appropriate connector (for example a male N connector). The frequency range of the RF input is specified in the datasheet. The attenuation range is between 0 dB and 40 dB. Risk of instrument damage Make sure not to overload the RF input and keep within the maximum allowed signal levels.
R&S®FPC Instrument Tour Rear Panel USB ports (type A) The two USB 2.0 ports on the front panel (type A) allow you to connect devices like memory sticks. Function keys and alphanumeric keypad The function keys provide access to the measurement settings and functions. The alphanumeric keypad allows you to enter alphanumeric data if necessary. Refer to the user manual for a comprehensive description of the function keys. Softkeys The softkeys allow you to access measurement settings and functions.
R&S®FPC Instrument Tour Rear Panel Power supply The AC power supply and main power switch are located in a unit on the rear panel of the instrument. The main power switch has the following states. ● Position "1": The instrument is supplied with power. ● Position "0": The instrument is disconnected from the power supply. Trigger input / external reference This female BNC connector allows you to connect an external trigger signal or an external reference signal.
R&S®FPC Operation Manual Operation 5 Operation You can operate the R&S FPC manually with the keys available on its front panel, or remotely from another computer. ● ● ● Manual Operation....................................................................................................19 Screen Layout.........................................................................................................22 Remote Operation....................................................................................
R&S®FPC Operation Manual Operation that menu item, the R&S FPC opens an input field that allows you to change the center frequency. Depending on the parameter, pressing a softkey has one of the following effects. ● It opens an input field that allows you to modify a parameter by entering a specific value. When an input field is open, the corresponding menu item turns orange. Example: Pressing the "Freq" key and selecting the "Center Frequency" menu item opens an input field.
R&S®FPC Operation Manual Operation Figure 5-6: Input keys The input keys only have an effect when any kind of input field is active on the display. There are several types of input keys. ● Alphanumeric keys The alphanumeric keys allow you to enter numeric values or characters: the numbers from 0 to 9, the alphabet, a minus and plus sign and a dot. Pressing the number 0 repeatedly allows you to enter an empty space and an underscore. Press the corresponding key to enter a numeric value.
R&S®FPC Operation Screen Layout If you confirm a value that has a unit with the "✓" key, the R&S FPC always uses the highest possible unit (for example GHz or s). In addition, the group of input keys also contains cursor keys and the rotary knob. Using the cursor keys The cursor keys do several things, depending on the situation when you use them. ● The cursor keys navigate through dialog boxes. ● The up and down keys increase or decrease any kind of numeric value if an input field is active.
R&S®FPC Operation Screen Layout 1 4 2 3 5 6 7 8 9 10 11 12 13 14 10 Figure 5-7: Screen layout in the spectrum application 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 = = = = = = = = = = = = = = = Title bar Input field Softkeys Measurement settings Trace information Marker information Limit line information Diagram area X-axis information Sweep count Trace Delta marker Limit line Marker Star icon Title bar The title bar shows the application that you are currently using as well as the date and time.
R&S®FPC Operation Screen Layout Softkeys can either perform a specific function or open an input field or dialog box. Measurement settings bar The measurement settings bar contains information about the current measurement settings. A blue dot in front of a setting indicates that automatic selection for that setting has been turned off. Trace information The trace information indicates the current trace configuration for each active trace (trace color, trace number, trace mode and detector).
R&S®FPC Operation Remote Operation The diagram area can contain additional information. ● The sweep count indicates the process of trace averaging. The first number is the current measurement, the second number the total number of measurements included in the trace averaging. ● The trace indicates the characteristics of the measured spectrum. ● The position of markers or delta markers is indicated by a straight horizontal line (markers) or a dotted line (delta markers).
R&S®FPC Operation Remote Operation Alternatively, you can establish a connection via USB in the "USB" tab of the "Connection Manager". 5. Select "Instrument" > "Remote Display". The software shows a live simulation of the R&S FPC, including all keys available on the front panel. Everything you do in the remote desktop application is also done on the connected R&S FPC. For a comprehensive description of the R&S InstrumentView software, refer to its user manual. Tip: Lab display.
R&S®FPC Operation Remote Operation Note: If you have a device that does not support ad-hoc connections, you have to connect both devices to an existing wireless infrastructure (for example through a router). When you connect both the mobile device and the R&S FPC to the infrastructure, you can use the app just like with an ad-hoc connection.
R&S®FPC Operation Remote Operation The user interface of the RsVisaTester opens. 4. Establish a connection to the R&S FPC. a) In the "Resource" field, enter the IP address of the R&S FPC you want to connect to. The form is tcpip::[::protocol][::instrument], you can leave out the parts in brackets for now. Just enter tcpip::. b) Confirm the entry with the "Connect" button.
R&S®FPC Operation Remote Operation The R&S FPC resets the settings to their default value. "Write" button: whenever you want to send information to the instrument, use this button. 8. Enter another command, one that changes an instrument setting, for example sense:frequency:center 100mhz or the short form freq:cent 100MHZ. Then select the "Write" button. The new state of the setting you want to change is defined by a parameter that you add behind the command.
R&S®FPC Operation Remote Operation Note that unless stated otherwise, a query always returns a numeric value in the SI derived unit (Hz in case of a frequency, not in kHz, MHz or GHz) and with several decimal places (usually six). Commands like SENSe:FREQuency:CENTer work a setting and a query. Other commands do not work both ways. *IDN, for example, is only allowed as a query (setting anything is not possible). *RST, for example, is only allowed as a setting (a query is not possible).
R&S®FPC Operation Remote Operation TRACe:DATA is a query, but you have to state a parameter in that case. The parameter defines which data is returned (in this case, the data of trace 1; you could also display a second trace whose data you could query with TRACe:DATA TRACE2). The trace data contains 1183 level values (one value for each pixel of the display). The unit of the values is dBm. The values are shown in the message box of the user interface.
R&S®FPC Preset 6 Preset Access: "Preset" Access (preset configuration): "Setup" > "User Preference" Access (factory reset): "Setup" > "Instrument Setup" Remote commands required to preset the system: ● Chapter 17.3, "Preset", on page 199 Before you prepare a measurement, it is recommended to preset the R&S FPC. During a preset, the R&S FPC resets all settings to their default state. Restoring the default configuration has the advantage that old settings do not affect measurements.
R&S®FPC Preset 2. Select the "Instrument Setup" menu item to open the setup menu. 3. Select the "Reset To Factory Settings" menu item. The R&S FPC initiates the reset process and will ask you to confirm the reset. When you select "Yes", the system will be reset. User Manual 1178.4130.
R&S®FPC Instrument Setup Network Configuration 7 Instrument Setup Access: "Setup" > "Instrument Setup" The "Instrument Setup" dialog box contains general properties of the R&S FPC that are independent of the measurement application you are using. ● ● ● ● ● ● ● BNC Connector Usage............................................................................................34 Network Configuration.............................................................................................34 Date and Time....
R&S®FPC Instrument Setup Network Configuration LAN When you are connecting the R&S FPC to a wired network (LAN), connect the R&S FPC with a standard LAN cable to a LAN port. The LAN port of the R&S FPC is on its rear panel. In case of a wired connection, you have to define several network properties to establish a network connection. You can either fetch the R&S FPC network properties automatically from a DHCP server (Dynamic Host Configuration Protocol) or manually assign a fixed address.
R&S®FPC Instrument Setup Date and Time Connecting the R&S FPC to a WLAN Instead of connecting to a LAN, you can also connect the R&S FPC to a Wi-Fi network. You can use the Wi-Fi functionality to connect the R&S FPC to a hotspot (for example a router or mobile device configured as a hotspot) and operate it remotely. 1. Press the "Setup" key to open the setup menu. 2. Select the "Instrument Setup" menu item to open the instrument setup dialog box. 3.
R&S®FPC Instrument Setup Regional Settings 2. Select the "Instrument Setup" menu item to open the instrument setup dialog box. 3. Select the "Set Time" menu item in the "Date and Time" category. 4. Enter the time you want with the numeric keys. If you enter an invalid time, the R&S FPC highlights the invalid part and does not accept the input until you enter a valid time. Selecting a time zone The displayed time represents the system time (UTC by default).
R&S®FPC Instrument Setup Audio Settings 3. Select the "Date Format" menu item in the "Regional" category. 4. Select the date format of your choice. ● ● "dd/mm/yyyy": day/month/year "mm/dd/yyyy": month/day/year Selecting the length unit 1. Press the "Setup" key to open the setup menu. 2. Select the "Instrument Setup" menu item to open the instrument setup dialog box. 3. Select the "Length Unit" menu item in the "Regional" category. 4. Select the length unit of your choice.
R&S®FPC Instrument Setup Power Settings Defining the key click volume The key click volume defines the volume of the sound that the R&S FPC produces when you press a key or softkey. 1. Press the "Setup" key to open the setup menu. 2. Select the "Instrument Setup" menu item to open the instrument setup dialog box. 3. Select the "Key Click Volume" menu item in the "Audio" category. 4. Select the volume that you prefer. The volume is a percentage from 0 % to 100 % with 100 % being the loudest.
R&S®FPC Instrument Setup Power Settings ● ● "On": The R&S FPC automatically boots when you use the main power switch on the rear panel. "Off": After using the main power switch, the R&S FPC is in stand-by mode. You have to turn it on with the power button on the front panel. User Manual 1178.4130.
R&S®FPC Data Management 8 Data Management Access (save and recall datasets): "Save Recall" Access (file manager): "Save Recall" > "File Manager" Access (user preferences): "Setup" > "User Preferences" Remote commands required for data management: ● Chapter 17.8, "Data Management", on page 209 The R&S FPC provides several tools to manage data related to your measurement tasks.
R&S®FPC Data Management Storage devices You can store all this data on the internal memory of the R&S FPC or on external storage devices like memory sticks that you can connect to one of the USB ports of the R&S FPC. The default storage device depends on which devices are connected. ● If a memory stick is connected, datasets are always stored there first. ● The internal memory is used only if no memory stick is connected. Note that the internal memory of the R&S FPC is limited to several Mbytes.
R&S®FPC Data Management ● ● ● ● ● "Load" See "Restoring datasets" on page 45. "Sort" Sorts the folder contents by certain criteria: alphabetically ("Sort on Name"), chronologically ("Sort by Date / Time") or by file size ("Sort on Size)". "Show Compatible" Filters the folder contents by their compatibility to the current measurement configuration. "Show All Files" Removes the compatibility filter that you have previously applied. "Edit" Allows you to edit the file or folder (item).
R&S®FPC Data Management 3. If you want to save the dataset in a different folder or an external memory device, navigate to the folder you like. 4. Enter the file name in the "Save As" input field. The default file name for datasets is Dataset###.set with a new number in ascending order for each new dataset. The file extension for datasets is .set. If necessary, you can change the default file name for datasets.
R&S®FPC Data Management 4. Select your preferred directory to store data in. 5. Confirm your selection with "Load". 6. Select the "Using Working Directory" menu item and turn it "On". Screenshots are automatically stored in the working directory you have selected. When you save a dataset, the R&S FPC automatically opens the file manager at the working directory. Changing the default file name for datasets 1. Press the "Setup" key to open the setup menu. 2. Select the "User Preference" menu item. 3.
R&S®FPC Data Management You can preview all available datasets in the selected folder with the "Prev" and "Next" menu items. When you have found a dataset that you would like to restore, you can restore it directly with the "Recall" menu item. Taking screenshots You can take and store a screenshot of the current screen anytime with the camera key. If available, the R&S FPC stores the screenshot on an external storage device (USB memory stick).
R&S®FPC Signal Source Configuration 9 Signal Source Configuration Access: "Meas" > "Source" Remote commands to configure the signal source: ● Chapter 17.9, "Signal Source Configuartion", on page 217 Available for the R&S FPC1500 and in the spectrum and VNA applications. The signal source settings control the signal output on the corresponding RF connector on the front panel of the R&S FPC. You can use the signal source for transmission measurements, for example.
R&S®FPC Signal Source Configuration by the offset, for example if the full span of your R&S FPC is 1 GHz, and you want an offset of 200 MHz, you have to reduce the span to 800 MHz. Defining the output level Risk of damage to the instrument or DUT Make sure that the DUT can handle the signal power that you output via the signal source. Power levels that are too high can damage the DUT. Make also sure that the reflected power does not exceed 20 dBm.
R&S®FPC Calibration 10 Calibration Access: "Meas" > "Source" > "Normalization" Remote commands to calibrate measurements: ● not supported Available for the R&S FPC1500 and in the spectrum and VNA applications. Before you measure S-parameters, you should calibrate the measurement. Calibration or system error correction is a separate measurement that determines systematic, reproducible errors.
R&S®FPC Calibration The correction data between the reference points of the calibration is interpolated. Interpolation is used when you change one of the frequency parameters (start, stop or center frequency). In that case, the distribution of the measurement points is different to the distribution during calibration. This could result in an increasing measurement uncertainty. Calibration types ● Normalize S21 Normalization is a simple way to calibrate the measurement using one calibration standard only.
R&S®FPC Calibration 2. Select the "Calibrate" menu item to enter the calibration menu. 3. Select the "Calibration Kits " menu item. The R&S FPC opens a dialog box that contains a list of all calibration kit specifications stored on the R&S FPC. 4. Select the calibration kit you are using. After you have selected the calibration kit, you can calibrate the measurement. Performing a default calibration You can do a full 1-port calibration and save the correction data as the default calibration.
R&S®FPC Calibration 3. Select the "Signal Source" menu item to open the signal source menu. 4. Turn on the "Tracking Generator". 5. Select the "Normalize S21" menu item. The R&S FPC asks you to set up a "Through" connection from port 1 to port 2. 6. Firmly connect the "Through" connection to port 1 and port 2. 7. Select the "Continue" menu item to start normalization. After finishing the calibration, the R&S FPC shows that calibration is finished for a short time ("Calibration Done").
R&S®FPC Calibration The R&S FPC applies the correction values (menu item turns light blue). If you have a default calibration, default calibration is applied if you do not activate user calibration. User Manual 1178.4130.
R&S®FPC Measurement Wizard 11 Measurement Wizard The measurement wizard is a tool that allows you to combine several individual measurement configurations to a sequence of measurements (or measurement set). Each individual measurement configuration is based on a dataset that you have previously saved.
R&S®FPC Measurement Wizard Figure 11-1: Global measurement set settings 4. Define a "Measurement Set Name" and, if you like, a measurement "Description". 5. Optional: Select a different "Measurement Font". The measurement font selects the type of font used to display the instructions on the R&S FPC. 6. Optional: Turn on the "Variable Number of Sequence Steps" feature. When you turn this on, you can reduce the number of individual measurements in a measurement sequence. 7.
R&S®FPC Measurement Wizard Figure 11-2: Measurement settings for a dataset Do that for all datasets you have added to the measurement set. 10. Define the "Measurement Name" and instructions for that measurement. You can add instructions as text and as an image. 11. Optional: Configure the "Hardware Settings". 12. "Save" the measurement set (the file extension for measurement sets is .mdf).
R&S®FPC Measurement Wizard The R&S FPC shows the measurement specification. The measurement specification contains a list of the individual measurements (datasets) defined for the measurement set, and their current state ("" or ""). Figure 11-3: Measurement specification shows the measurement sequence You can access the measurement specification with the "Measurement Specification" menu item. 5. Optional: Select one of the measurements.
R&S®FPC Measurement Wizard 6. Start the measurement sequence with the "Start Measurement" menu item. The R&S FPC starts to go through the measurements that are part of the measurement set. The sequence of the measurement is as defined with the R&S InstrumentView software. Note that it is not possible to change any measurement parameters while using the measurement wizard. Marker functionality and scaling parameters are, however, available.
R&S®FPC Measurement Wizard ● Ending a measurement sequence is possible when you turn on "Allow to skip measurements and finish wizard sequence" in the "Wizard Set" editor of the R&S InstrumentView software. "Cancel" Aborts the measurement sequence. The results of finished measurements are lost. When all measurements of the sequence are done, the R&S FPC shows a corresponding message.
R&S®FPC Measurement Wizard Now that the results are available, you can start to compile a measurement report with the R&S InstrumentView software. 5. Start the "Report Generator". With the report editor, you can create measurement reports for the full measurement set or a selection of dataset only. You can also perform simple tasks like activating or deactivating markers that have been set during the measurement. 6.
R&S®FPC The Spectrum Application Configuration Overview 12 The Spectrum Application The spectrum analyzer application is the base application of the R&S FPC. It provides conventional spectrum analyzer functionality. In addition to basic frequency and time domain measurements, it also features several more sophisticated measurements like the channel power measurement or the OBW measurement (occupied bandwidth).
R&S®FPC The Spectrum Application Configuration Overview Figure 12-1: Configuration overview in the spectrum application Accessing the configuration overview 1. Press the "Setup" key to open the setup menu. 2. Select the "Config Overview" menu item to open the configuration overview dialog box. Each pane contains several main measurement settings that you can change directly in the configuration overview. 3. Select one of the panes in the dialog box with the cursor keys or the rotary knob. 4.
R&S®FPC The Spectrum Application Measurements and Result Displays ● "Analysis" For more information about the contents of the "Analysis" pane, see Chapter 12.8, "Trace Configuration", on page 108. ● "Trigger" For more information about the contents of the "Trigger" pane, see Chapter 12.7, "Trigger Configuration", on page 107. 12.2 Measurements and Result Displays The R&S FPC allows you to measure a signal in the frequency domain or the time domain.
R&S®FPC The Spectrum Application Measurements and Result Displays Frequency domain measurements In the frequency domain, the R&S FPC analyzes the input signal characteristics over a certain frequency span. You can use it, for example, to obtain basic measurement results like peak levels and the shape of the spectrum. The horizontal axis shows the frequency, the vertical axis shows the signal levels. The measurement in the frequency domain is the default measurement mode.
R&S®FPC The Spectrum Application Measurements and Result Displays ● ● ● Measuring the AM Modulation Depth......................................................................74 Measuring the Occupied Bandwidth....................................................................... 76 Working with the Spectrogram Result Display........................................................ 79 12.2.
R&S®FPC The Spectrum Application Measurements and Result Displays 12.2.1.1 About the Measurement The following prerequisites and settings are necessary to obtain correct results for the channel power measurement. ● Define the correct channel bandwidth. Only the signal to be measured should be visible in the diagram. An additional signal would falsify the measurement. ● Define a sufficient resolution bandwidth. ● Select the RMS detector.
R&S®FPC The Spectrum Application Measurements and Result Displays The displayed result shows the highest channel power that has been measured (indicated by the "Max Power" result in the diagram header. 4. You can return to the normal power display by selecting the "Clear / Write" menu item instead. Measuring the channel power density By default, the R&S FPC the channel power result corresponds to the complete channel bandwidth you have selected.
R&S®FPC The Spectrum Application Measurements and Result Displays The R&S FPC opens a dialog box to select the standard. 3. Select one of the available standards. The R&S FPC loads the configuration of the selected standard. It automatically sets the span, resolution bandwidth, video bandwidth, sweep time and detector required by the standard.
R&S®FPC The Spectrum Application Measurements and Result Displays 12.2.2 Third Order Intermodulation Access: "Meas" > "Measurement Mode" > "Occupied Bandwidth" Remote commands to control the third order intermodulation measurement: ● Chapter 17.12.1.3, "Third Order Intermodulation", on page 229 Available with the optional "Advanced Measurements" application. Intermodulation is an effect that occurs when you transmit signals on two or more frequencies close to each other.
R&S®FPC The Spectrum Application Measurements and Result Displays The third order intermodulation (TOI) measurement analyzes the intermodulation products that occur at the output of the DUT and calculates the third order intercept point. The IP3 is the theoretical intercept point of the DUTs desired output level and the level of the intermodulation products. It is thus a measure of the DUTs linearity.
R&S®FPC The Spectrum Application Measurements and Result Displays The TDMA power measurement is a time domain measurement that determines the power of one of the time slots or the power of a burst. Selecting the TDMA power measurement 1. Press the "Meas" key to open the measurement menu. 2. Select the "Measurement Mode" menu item to select the measurement. 3. Select the "TDMA Power" menu item. The R&S FPC starts to measure the time domain power.
R&S®FPC The Spectrum Application Measurements and Result Displays Defining the reference level The reference level is the power level that the R&S FPC expects at the RF input. When you select the reference level, make sure that you do not overload the R&S FPC by applying a signal whose power exceeds the maximum reference level.
R&S®FPC The Spectrum Application Measurements and Result Displays 2. Press the "Sweep" key to open the sweep menu. 3. Select the "Trigger" menu item to open the trigger menu. 4. Select the trigger source ("Video" or "External Rise / Fall" 5. Select either the "External Rise" or "External Fall" menu item (rising or falling edge). The R&S FPC activates the trigger and shows the results of the measurement. 12.2.
R&S®FPC The Spectrum Application Measurements and Result Displays Defining the number of harmonics The R&S FPC supports measurements on up to six harmonics. By default, the R&S FPC shows the signal's fundamental and its first harmonic. The fundamental and its harmonics are indicated by a marker that the R&S FPC places on the detected peaks. Note that all markers that have been set are normal markers that show the absolute frequency of the harmonic.
R&S®FPC The Spectrum Application Measurements and Result Displays Selecting the AM modulation depth measurement 1. Press the "Meas" key to open the measurement menu. 2. Select the "Measurement Mode" menu item to select the measurement. 3. Select the "AM Modulation Depth" menu item. The R&S FPC measures the modulation depth by placing three markers on the trace. The first marker is placed on the peak level - the R&S FPC assumes that the highest level is the carrier.
R&S®FPC The Spectrum Application Measurements and Result Displays 12.2.6 Measuring the Occupied Bandwidth Access: "Meas" > "Measurement Mode" > "Occupied Bandwidth" Remote commands to control the occupied bandwidth measurement: ● Chapter 17.12.1, "Measurements and Result Displays", on page 223 Available with the optional "Advanced Measurements" application. An important characteristic of a modulated signal is its occupied bandwidth (OBW).
R&S®FPC The Spectrum Application Measurements and Result Displays Only the signal to be measured should be visible in the diagram. An additional signal would falsify the measurement. 12.2.6.2 ● Define a sufficient resolution bandwidth. The resolution bandwidth should be between 1 % and 4 % of the channel bandwidth. This ensures that the occupied bandwidth is measured with high accuracy. ● Define a sufficient video bandwidth. The video bandwidth must be at least three times the resolution bandwidth.
R&S®FPC The Spectrum Application Measurements and Result Displays The R&S FPC opens an input field to define the channel bandwidth. 3. Enter the channel bandwidth you need. Note: The minimum channel bandwidth that you can set is 2 kHz at a span of 1 kHz. Selecting a standard You can store the main measurement settings as a standard file. When you load such a standard file, the R&S FPC automatically configures the measurement regarding channel and general measurement settings.
R&S®FPC The Spectrum Application Measurements and Result Displays It uses a resolution bandwidth of 1 MHz, a video bandwidth of 1 MHz and the peak detector. After finishing the automatic measurement, the R&S FPC sets the optimal reference level. Changing the span Usually, the span that the R&S FPC selects yields optimal results. But sometimes you also need to see the spectrum outside the current span to detect other signal components that you need to include in the measurement.
R&S®FPC The Spectrum Application Measurements and Result Displays move down one position, so that the present frame is always on top of the diagram. Therefore, the sequence of frames is chronological. Selecting the spectrogram result display 1. Press the "Meas" key to open the measurement menu. 2. Select the "Measurement Mode" menu item to open the measurement mode menu. 3. Select the "Spectrogram" menu item. The R&S FPC starts the recording of the spectrogram.
R&S®FPC The Spectrum Application Measurements and Result Displays The spectrogram result display is filled with new lines until you change a measurement setting. When you change a setting (for example the center frequency), the spectrogram clears and starts to fill again. 4. You can also clear the spectrogram manually. Press the "Meas" key. 5. Select the "Clear" menu item.
R&S®FPC The Spectrum Application Measurements and Result Displays ● ● 12.2.7.2 Two arrows (one up, one down) indicate that the spectrogram area displayed is somewhere in the middle of the available history. A single up arrow in the upper right corner of the spectrogram indicates that the lowest line of the spectrogram represents the end of the history buffer. Color Definition Colors are an important element of the spectrogram.
R&S®FPC The Spectrum Application Measurements and Result Displays Therefore you can adjust the color map to the overall shape of the signal you are measuring. Let us say, for example, that the signal has an amplitude range of about 30 dB with the maximum amplitude at about -80 dBm and the minimum amplitude at about -120 dBm. With the default settings, the spectrogram is made up exclusively of red colors and it is not easy to distinguish amplitude levels.
R&S®FPC The Spectrum Application Measurements and Result Displays The changes however, still do not show signal differences in detail. The only thing that happened is that the colors have shifted, in the example to purple, because the color that corresponds to the reference level has shifted from red to purple. All other colors that are part of the color scheme are still unused, because the spectrogram level range is still the same (100 dB). 5. Select the "Level Range" menu item.
R&S®FPC The Spectrum Application Measurements and Result Displays The best way to display a spectrogram is therefore to reduce the level range until the lowest signal part is mapped to the lower end of the color map and the highest signal part to the upper end of the color map. Note: You can also use the "Auto Range" menu item to adjust the displayed level range. In that case, the R&S FPC selects a level range that best suits the currently measured signal.
R&S®FPC The Spectrum Application Measurements and Result Displays 4. Select the "Save" softkey to store the spectrogram. Now that you have saved the spectrogram, you can replay it any time you want. The number of spectrograms that you can store on the R&S FPC internal memory depends on the other datasets that are currently on the R&S FPC. Playback of a spectrogram If you have recorded a spectrogram and have saved it in internal memory or a memory stick, you can view the results of that measurement later.
R&S®FPC The Spectrum Application Measurements and Result Displays 2. Select the "Time Line " menu item. The R&S FPC opens an input field to define the position of the corresponding time line (T1 or T2). 3. Position the time line by entering a number or moving it with the rotary knob. Entering 0 sets the time line marker on the most recent frame. The maximum value that you can enter is 1024 (the maximum number of frames the R&S FPC can store in its memory).
R&S®FPC The Spectrum Application Frequency Configuration Figure 12-6: Time lines and markers in the spectrogram Switching back to active spectrogram recording You can presume the spectrogram recording from playback mode. 1. Press the "Meas" key to open the measurement menu. 2. Select the "Live Update" menu item. The R&S FPC switches back to a live measurements. 12.
R&S®FPC The Spectrum Application Frequency Configuration ● In terms of a start and stop frequency from which the center frequency is automatically derived. ● In terms of a channel table that contains (frequency) information about a set of transmission channels. ● ● ● Measurement Frequency........................................................................................ 89 Frequency Span......................................................................................................
R&S®FPC The Spectrum Application Frequency Configuration When you select the center frequency with the rotary knob or the cursor keys, the distance of each step that you take depends on the span. With the rotary knob, the smallest possible step is a pixel. With the cursor keys, the step is 10 % of the span or one division of the grid. 1. Press the "Freq" key to open the frequency menu. 2. Select the "CF Step Size" menu item to open the frequency step size menu. 3. Select one of step size options.
R&S®FPC The Spectrum Application Frequency Configuration 12.3.2 Frequency Span The span is the frequency range that the measurement covers. You can measure the full frequency range of the R&S FPC, or a smaller part of it. The span also defines which frequency information is displayed in the measurement diagram - the span is the frequency range around the center frequency that you have defined. The available span for frequency domain measurements depends on the instrument model.
R&S®FPC The Spectrum Application Frequency Configuration Defining a start and stop frequency Defining a start a stop frequency is best suited for example for measurements on harmonics or signals whose exact frequency is unknown. When you define a start and stop frequency, the center frequency is automatically adjusted to be in the center of start and stop frequency. 1. Press the "Freq" key to open the frequency menu. 2. Select the "Start Freq" menu item.
R&S®FPC The Spectrum Application Amplitude Configuration After activating the channel table, the R&S FPC is configured according to the information contained in the channel table. Instead of a center frequency, the R&S FPC shows the currently active channel number including the name of the channel. The center frequency of a channel is defined in the channel table and is the frequency corresponding to the selected channel.
R&S®FPC The Spectrum Application Amplitude Configuration If you need an input impedance of 75 Ω, you have to connect one of the supported matching pads to the RF input. When one of the supported matching pads is connected, you can change the input impedance. The R&S FPC in that case automatically considers the conversion factor. The matching pads are available as accessories. Refer to the datasheet for ordering information. 1. Press the "Ampt" key to open the amplitude menu. 2.
R&S®FPC The Spectrum Application Amplitude Configuration 3. Enter the reference level. When you change the reference level while a trace is already displayed, the R&S FPC adjusts the position of the trace. The current reference level is indicated in the status bar. A blue dot in front of the "Ref:" label indicates a reference level offset is active. Defining a reference offset The reference level offset is an arithmetic level offset.
R&S®FPC The Spectrum Application Amplitude Configuration You can change the position of the reference level to another grid line, if required for any reason. 1. Press the "Ampt" key to open the amplitude menu. 2. Select the "Range / Ref Position" menu item to open the display range menu. 3. Select the "Reference Position 10 ..." menu item. The R&S FPC opens an input field to define the reference position. 4. Enter the number of the grid line (0 to 10) you want the reference level at.
R&S®FPC The Spectrum Application Amplitude Configuration 2. Select the "Attenuator" menu item to open the attenuator menu. 3. The R&S FPC provides several attenuation modes. ● "Manual Att dB" Defines the attenuation manually in 5 dB steps. The range is from 0 dB to 40 dB. Manual attenuation is indicated by a blue dot in front of the "Att:" display in the status bar.
R&S®FPC The Spectrum Application Amplitude Configuration Reference level Preamplifier OFF Preamplifier ON RF attenuation RF attenuation Low noise Low distortion Low noise Low distortion 21 dBm to 25 dBm 35 dB 40 dB 40 dB 40 dB 26 dBm to 30 dBm 40 dB 40 dB 40 dB 40 dB Preamplifier The internal 20 dB preamplifier is another hardware component to control measurement sensitivity. When you turn on the preamplifier, all signals are amplified by 20 dB.
R&S®FPC The Spectrum Application Amplitude Configuration Defining a display range The display range determines the scale or resolution of the y-axis. In the default state, the display range is a logarithmic scale over a 100 dB. This scale corresponds to a resolution of 10 dB per grid division. The R&S FPC provides other display ranges that either increase or decrease the resolution of the y-axis. Note that increasing the resolution of the y-axis does not increase the accuracy of measurement results.
R&S®FPC The Spectrum Application Amplitude Configuration ers. Two transducers can be switched on at a time. The second transducer must be assigned the unit dB. The R&S FPC adds the two transducers to a total transducer. Units supported for transducer factors: ● dB ● dBμV/m ● dBμA/m ● W/m2 The unit dB does not change the unit set on the R&S FPC. It can be used, for example, to compensate for frequency-dependent loss and gain at the input of the R&S FPC.
R&S®FPC The Spectrum Application Bandwidth Configuration If the unit of the transducer is dBμV/m or dBμA/m, this unit is also used for the R&S FPC level display. This means that both the level axis of the diagram and the level at the marker position are assigned the unit of the transducer. If dBμV/m is selected as the transducer unit, a switch to absolute level indication in V/m is possible. 1. Press the "Ampt" key to open the amplitude menu. 2. Select the "Unit" menu item to open the unit menu. 3.
R&S®FPC The Spectrum Application Bandwidth Configuration 12.5.1 Resolution Filter The resolution filter (or IF filter) is a 3 dB bandpass filter located in the IF path of the analyzer. Its bandwidth determines how well individual spectral components can be separated from each other in frequency domain measurements. The resolution bandwidth (RBW) has several effects on measurements.
R&S®FPC The Spectrum Application Bandwidth Configuration Automatically selects an appropriate resolution bandwidth depending on the current frequency span. Automatic adjustment of the sweep time In its default mode, the R&S FPC automatically adjusts the sweep time when you change the resolution bandwidth. This ensures that the settling time required for the selected resolution filter is properly taken into account. For narrow resolution filters and large spans, the maximum sweep time would be exceeded.
R&S®FPC The Spectrum Application Sweep Configuration frequency of the video filter will be rejected. The smaller the video bandwidth, the smaller the noise amplitude at the video filter output. The video bandwidth (VBW) has several effects on measurements. ● If you want to keep signals free of noise, you should select the smallest video bandwidth possible (≤ 0.1 x RBW).
R&S®FPC The Spectrum Application Sweep Configuration 12.6.1 Sweep Time The sweep time (or measurement time) is the time that the analyzer requires to acquire and analyze the data in the selected frequency span. Large spans require more time to measure than small spans. Generally, the R&S FPC requires at least 20 ms for every 600 MHz of span.
R&S®FPC The Spectrum Application Sweep Configuration you deliberately initiate it. Note that in case of the average trace mode, a single sweep can consist of several measurements - when these are done, the measurement stops. Selecting the sweep mode 1. Press the "Sweep" key to open the sweep menu. 2. Select the "Continuous Sweep" menu item. The R&S FPC starts a continuous measurement of the selected span. You can interrupt a continuous measurement by selecting the "Continuous Sweep" menu item again. 3.
R&S®FPC The Spectrum Application Trigger Configuration 12.7 Trigger Configuration Access: "Sweep" Access: "Setup" > "Config Overview" > "Trigger" (selected settings) Remote commands to trigger measurements: ● Chapter 17.12.6, "Trigger", on page 251 It often makes sense to capture data only when interesting events occur in the spectrum or only capture parts of a signal. In such cases, you can use a trigger. A trigger responds to certain events.
R&S®FPC The Spectrum Application Trace Configuration Defining a trigger delay When you are using an external trigger, you can delay the start of the measurement with respect to the trigger event. Thus, you can include time differences between the trigger event and the measurement. 1. Press the "Sweep" key to open the sweep menu. 2. Select the "Trigger" menu item to open the trigger menu. 3. Select the "Trigger Delay" menu item. The R&S FPC opens an input field to define the delay time.
R&S®FPC The Spectrum Application Trace Configuration The currently selected trace number is highlighted. Selecting a second trace The R&S FPC can display two traces. Both traces are based on the same settings, except the trace settings like the trace mode or the detector. You can use the second trace to compare, for example, two different detector settings. In the default state, only trace 1 is active. 1. Press the "Trace" key to open the trace menu. 2. Select the "Trace " menu item.
R&S®FPC The Spectrum Application Trace Configuration Note that each time you select another trace mode, the R&S FPC clears the trace memory. The following trace modes are available. ● "Clear / Write" Overwrites the displayed measurement results when you start a new sweep. Selecting the "Clear / Write" mode automatically selects the "Auto Peak" detector. ● "Max Hold" Displays the highest levels that have been measured over several sweeps.
R&S®FPC The Spectrum Application Trace Configuration If you have selected the average trace mode ("Average" menu item), the R&S FPC opens an input field to define the number of measurements included in the averaging ("Average Count"). 4. Enter the number of sweeps to include in the averaging. In continuous sweep mode, the R&S FPC now calculates the moving average over the number of sweeps you have specified. In single sweep mode, it stops the measurement after finishing the sweeps and averages the traces.
R&S®FPC The Spectrum Application Trace Configuration (whichever is larger). Otherwise, the power the R&S FPC shows is too low because there are spectral components within the frequency range covered by the pixel that do not originate from the signal you want to observe (e.g. noise). To get the true power, the video bandwidth (VBW) should also be greater than the resolution bandwidth (RBW). Otherwise, an averaging effect caused by video bandlimiting comes into play before the RMS value is calculated.
R&S®FPC The Spectrum Application Trace Configuration 4. Select the "Trace ▶ Memory " menu item. The R&S FPC stores the trace data in its memory. The "Memory" menu item becomes active. 5. Select the "Show Memory " menu item. The R&S FPC shows the memory trace in a different shade of the corresponding trace color. If active, it highlights the "Show Memory " menu item.
R&S®FPC The Spectrum Application Marker Configuration Figure 12-16: Result of trace mathematics ("Trace - Memory") 12.9 Marker Configuration Access (marker menu): "Mkr" Access (marker positioning menu): "Mkr→" Remote commands to control marker: ● Chapter 17.12.8, "Marker", on page 258 Markers are a tool that can help you to determine signal characteristics for each measurement point displayed on the trace.
R&S®FPC The Spectrum Application Marker Configuration Figure 12-18: Marker information in the diagram area and the marker list above the diagram The marker list contains the following information. ● Marker number and type. "M" for normal markers, "D" for delta marker, including the marker number ("M1" to "M6" and "D2" to "D6"). The currently selected marker is surrounded by a colored line. ● Horizontal position of the marker. The horizontal position is usually a frequency value.
R&S®FPC The Spectrum Application Marker Configuration If, as yet, no marker is active, the R&S FPC automatically activates a normal marker ("M1") and positions it on the highest level that has been measured. In addition, the "Marker" input field opens. The "Marker" input field allows you to define the position of the marker on the xaxis. 2. You can change the marker position in several ways. ● Move the marker with the cursor keys.
R&S®FPC The Spectrum Application Marker Configuration Selecting the marker type You can change the marker type for markers 2 to 6. Because marker 1 is the reference marker for the delta markers, it is always a normal marker. Therefore, it cannot be converted to a delta marker. 1. Activate a marker and a delta marker. 2. Select the delta marker if it is not already selected. 3. Select the "Marker Type" menu item. The delta marker turns into a normal marker.
R&S®FPC The Spectrum Application Marker Configuration Tip: Marker positioning functions are only available if at least one marker is active. If no marker or delta marker is active, they are not applicable. 2. Select the menu item of the positioning function you want to use. ● "Set To Peak" Positions the active marker or delta marker on the highest level value of the trace.
R&S®FPC The Spectrum Application Marker Functions The R&S FPC draws another vertical line at the position you selected and labels it with 1 (for search range 1). Figure 12-19: Marker search range lines 8. To use search range 1 for measurements, select the "Set to Search Range 1" menu item. The R&S FPC then uses the search range for the "Set To Peak", "Set To Next Peak", "Set To Minimum" and "All Marker To Peak" functions and positions the markers or delta markers inside this range.
R&S®FPC The Spectrum Application Marker Functions Deactivating marker functions Selecting a marker function again while it is still active turns that marker function off. ● ● ● ● Noise Measurement.............................................................................................. 120 Frequency Counter............................................................................................... 120 Signal Bandwidth Measurement.....................................................................
R&S®FPC The Spectrum Application Marker Functions trace only has a limited number of pixels, the marker position is usually just an approximation, especially if the span is very large. With the frequency counter, however, you can get a more accurate result of the frequency that the marker is positioned on. If the frequency counter is active, the R&S FPC stops the measurement at the marker position for a short time and measures the frequency using the internal reference frequency.
R&S®FPC The Spectrum Application Marker Functions 4. Select the "N dB " menu item to select the distance between the temporary markers. Note: The distance to the reference marker is by default 3 dB below the reference marker. 12.10.4 Marker Demodulation Access: "Mkr" > "Marker Demodulation" The R&S FPC features an AM and FM demodulator to demodulate and monitor audio signals. It demodulates the signal at the marker frequency.
R&S®FPC The Spectrum Application Display Lines 4. Enter the demodulation time you want to use. Note: The range is from 100 ms to 500 s. In the time domain, the R&S FPC demodulates continuously. The demodulation time has no effect in that case. Defining the audio volume 1. Press the "Mkr" key to open the marker menu. 2. Select the "Marker Demodulation" menu item to open the marker demodulation menu. 3. Select the "Volume " menu item. The R&S FPC opens an input field to define the demodulation volume. 4.
R&S®FPC The Spectrum Application Limit Lines Alternatively you can also move the display line with the rotary knob or the cursor keys. Figure 12-20: Display line at -38 dBm 12.12 Limit Lines Access (limit lines menu): "Lines" Limit lines are an analysis tool that allows you to compare the measured signal levels to signal specifications, and determine if the signal levels comply to the specifications. Remote commands to configure limit lines: ● Chapter 17.12.
R&S®FPC The Spectrum Application Limit Lines ● An audio signal that sounds every time a limit is violated. You can create and edit limit lines with the R&S InstrumentView software package and then transfer them into the internal memory of the R&S FPC. The number of limit lines you can store in the memory depends on other datasets available on theR&S FPC or, if you are using an external storage device (for example memory stick), the size of it.
R&S®FPC The Spectrum Application Limit Lines The R&S FPC opens an input field to define the limit line threshold. 5. Enter the required threshold. The R&S FPC displays the threshold line. The threshold line is represented by a straight red line. Hiding a limit line Hiding a limit line allows you to switch quickly between showing and hiding a limit line and evaluate a limit check, without turning it off it completely.
R&S®FPC The Spectrum Application Limit Lines The "Audio Beep" menu item. If the audio beep is active, the R&S FPC beeps each time a limit is violated. The audio signal is active when the "Audio Beep" menu item is highlighted. User Manual 1178.4130.
R&S®FPC The Receiver Application Measurements and Result Displays 13 The Receiver Application Available with the optional "Receiver" application. The receiver application measures the power level of a specific frequency or a customized set of frequencies instead of sweeping over (parts of) the frequency spectrum. The R&S FPC shows the results in result displays that have been designed for just such measurement tasks.
R&S®FPC The Receiver Application Measurements and Result Displays The fixed frequency measurement measures the signal level of a single frequency and shows the results in a bargraph. The bargraph result display is a basic result display that shows the signal level at a specific frequency. The signal level is shown both as a numeric value and graphically as a bargraph.
R&S®FPC The Receiver Application Measurements and Result Displays Compared to single frequency measurements, frequency scans measure a certain set of receiver frequencies. The scan measures only those frequencies that are defined in the frequency range. The space between the receiver frequencies is not considered in the measurement. The R&S FPC shows the results for a frequency scan in a graphical result display. The horizontal axis in that display represents the frequency spectrum covered by the scan.
R&S®FPC The Receiver Application Frequency Configuration ● "Trace Style: Polygons": Shows the trace as a continuous, horizontal line. The gaps between the measurement frequencies are interpolated. 13.1.3 Max Hold Information Access: "Meas" Both the fixed frequency measurement and the frequency scan contain max hold information. Max hold information indicates the highest level that has been measured since you have started the measurement.
R&S®FPC The Receiver Application Frequency Configuration 13.2.1 Frequency Configuration (Fixed Frequency) In single frequency measurement mode, the R&S FPC determines the power level of a single frequency only. You can measure any frequency supported by the R&S FPC. Defining the receiver frequency 1. Press the "Freq" key to open the frequency menu. 2. Select the "Frequency" menu item. The R&S FPC opens an input field to define the receiver frequency. 3. Enter the receiver frequency you want.
R&S®FPC The Receiver Application Frequency Configuration 13.2.2 Frequency Configuration (Frequency Scan) In frequency scan measurement mode, the R&S FPC determines the power levels of a set of single frequencies. The scan range defines the frequency range that the scan takes place in. Therefore, you have to define a start and stop frequency for the scan range and a scan step size.
R&S®FPC The Receiver Application Frequency Configuration Selecting the scale of the x-axis You can display the x-axis in a linear or a logarithmic scale. In a linear display, the frequencies are distributed linearly across the x-axis. That means the entire frequency range is divided by the number of measurement points, and the distance between measurement points is equal. Linear scaling is useful to determine precise frequencies within a small range.
R&S®FPC The Receiver Application Amplitude Configuration 13.3 Amplitude Configuration Access: "Ampt" Access: "Setup" > "Config Overview" > "Amplitude" (selected settings) Access: "Setup" > "Config Overview" > "Input" (selected settings) Remote commands to configure the amplitude: ● Chapter 17.13.3, "Amplitude", on page 282 The following amplitude settings available in the receiver application are the same as in the spectrum application. ● "Reference Level": Chapter 12.4.
R&S®FPC The Receiver Application Bandwidth Configuration 4. Select the "Range / Ref Position" menu item to open the corresponding menu. 5. Select the "Ref Position " menu item. 6. Move the position of the reference level on the bargraph scale to another position. The range is from 0 to 10. "0" corresponds to the left side of the bargraph, "10" corresponds to right side of the bargraph. You can also select the level range that the bargraph covers.
R&S®FPC The Receiver Application Trigger Configuration 13.5 Sweep Configuration Access: "Sweep" Access: "Setup" > "Config Overview" > "Bandwidth" (selected settings) Remote commands to control the measurement: ● Chapter 17.13.5, "Sweep Control", on page 283 The sweep menu provides settings to control the measurement and the way data is captured.
R&S®FPC The Receiver Application Marker Configuration Trigger settings in the receiver application described elsewhere: ● "Free Run": Chapter 12.7, "Trigger Configuration", on page 107 ● "External Rise": Chapter 12.7, "Trigger Configuration", on page 107 ● "External Fall": Chapter 12.7, "Trigger Configuration", on page 107 13.7 Trace Configuration Access: "Trace" Access: "Setup" > "Config Overview" > "Analysis" (selected settings) Remote commands to configure traces: ● Chapter 17.13.
R&S®FPC The Receiver Application Marker Configuration Synchronizing the bargraph frequency and marker position You can synchronize the receiver frequency of the bargraph and the position of a marker in the frequency scan. 1. Press the "Meas" to open the measurement menu. 2. Select and start a "Frequency Scan". 3. Press the "Mkr" key to open the marker menu. 4. Select a marker and position it on one of the measurement frequencies. 5. Select the "Marker To Fixed Freq" menu item.
R&S®FPC Analog Demodulation Measurements and Result Displays 14 Analog Demodulation Available with the optional "AM, FM, ASK, FSK Demodulation" application. The analog demodulation application demodulates amplitude modulated (AM) and frequency modulated (FM) signals, and shows various aspects of the modulated and demodulated signal. You can view the results as numerical values or as a line trace in a diagram to get an idea about the modulation accuracy of the signal.
R&S®FPC Analog Demodulation Measurements and Result Displays The demodulation starts directly after you have selected the measurement type. By default, the R&S FPC displays the results in a numerical result display, but you can also display the results in graphical result displays. Selecting the result display Both measurement types support a numerical and a graphical result display.
R&S®FPC Analog Demodulation Measurements and Result Displays Figure 14-2: Numerical results for an AM signal, including limit evaluation For each aspect, the R&S FPC shows the measured "Result", and, if you are using limits, the "Upper Limit" and "Lower Limit" value you have defined, including the "Status" of the limit check ("Pass" or "Fail"). The following results are evaluated: ● Carrier Freq Offset Shows the deviation of the calculated carrier frequency to the ideal carrier frequency in Hz.
R&S®FPC Analog Demodulation Amplitude Configuration Shows the total harmonic distortion. The THD is the ratio of the harmonics to the fundamental and harmonics. All harmonics inside AF spectrum are considered up to the tenth harmonic. 14.2 Frequency Configuration Access: "Freq" Access: "Setup" > "Config Overview" > "Frequency" (selected settings) Remote commands to configure the frequency: ● Chapter 17.14.
R&S®FPC Analog Demodulation Bandwidth Configuration Adjusting the scale of the y-axis (AM signals) The y-axis shows the results as a percentage that represents the modulation depth. The modulation depth indicates how much the modulated signal deviates from the unmodulated signal (0 %). For AM signals, you can define the display range of the y-axis. The display range is defined by the deviation from the zero line per grid division. 1. Press the "Ampt" key to open the amplitude menu. 2.
R&S®FPC Analog Demodulation Bandwidth Configuration Selecting the demodulation bandwidth The demodulation bandwidth (DBW) determines the frequency range around the center frequency that is demodulated. It is not the 3 dB bandwidth of the filter but the useful bandwidth which is distortion-free regarding phase and amplitude. Basically, the demodulation bandwidth should be as narrow as possible to improve the S/N ratio.
R&S®FPC Analog Demodulation Bandwidth Configuration Selecting the FM broadcast time The FM broadcast time parameter selects the time constant of the deemphasis filter. This deemphasis filter is commonly used in FM broadcasting to improve the S/N ratio. In that case, a modulated signal is extorted by a pre-emphasis filter before transmission, for example to eliminate frequencies that are more prone to interferences. The deemphasis filter reverses the emphasis function after demodulation.
R&S®FPC Analog Demodulation Bandwidth Configuration Table 14-3: Minimum and maximum modulating frequencies for audio lowpass: DBW/1 Demodulation bandwidth Modulating frequency [Hz] Minimum Maximum 2000000 6100 1000000 989000 3050 500000 650000 2350 325000 500000 1520 250000 300000 950 150000 200000 610 100000 100000 300 50000 50000 150 25000 30000 90 15000 20000 60 10000 10000 30 5000 Table 14-4: Minimum and maximum modulating frequencies for audio lowpass: DBW/10 Demod
R&S®FPC Analog Demodulation Sweep Configuration Demodulation bandwidth Modulating frequency [Hz] Minimum Maximum 500000 45 7576 300000 30 4545 200000 20 3030 100000 10 1515 50000 5 758 30000 3 455 20000 3 303 10000 3 152 Table 14-6: Minimum and maximum modulating frequencies for audio lowpass: DBW/100 Demodulation bandwidth Modulating frequency [Hz] Minimum Maximum 2000000 60 10000 989000 30 5000 650000 25 3250 500000 15 2500 300000 10 1500 200000 6 1000 100
R&S®FPC Analog Demodulation Limits In continuous mode, the R&S FPC demodulates the signal over and over until you stop it deliberately. The measurement results are updated accordingly. In single mode, the R&S FPC demodulates the signal once and then stops without updating the results any longer. Another measurement starts only when you deliberately initiate it. 1. Press the "Sweep" key to open the sweep menu. 2. Select the "Continuous Sweep" menu item. The R&S FPC demodulates the signal continuously.
R&S®FPC Analog Demodulation Limits You can use the "Show Compatible" menu item to display only those files that you can use for the current measurement mode. 4. Select one of the available files and confirm the selection with the "Load" menu item. The R&S FPC shows the upper and lower limit values defined in the file in the corresponding columns of the result summary. It automatically checks if the results are within the limits or not.
R&S®FPC Digital Demodulation Measurements and Result Displays 15 Digital Demodulation Available with the optional "AM, FM, ASK, FSK Demodulation" application. The digital demodulation application demodulates signals modulated with amplitudeshift keying (ASK) and frequency-shift keying (FSK) modulation schemes. It analyzes these signals and shows various aspects of the modulated and demodulated signal.
R&S®FPC Digital Demodulation Measurements and Result Displays Analyzer Device under test (DUT) Extraction of ideal signal Comparison Result display Figure 15-1: Demodulation principle The R&S FPC provides several measurements and numerical and graphical result displays. These result displays show various aspects and characteristics of the demodulated signal. Selecting the measurement The measurement type selects the modulation scheme that the signal is modulated with.
R&S®FPC Digital Demodulation Measurements and Result Displays The demodulation starts directly after you have selected the measurement. By default, the R&S FPC displays the results in a graphical result display, but you can also display the results in graphical result displays. Selecting the result display Both measurement types support several result displays.
R&S®FPC Digital Demodulation Measurements and Result Displays Figure 15-3: Symbol stream of a 2ASK signal ● "Modulation Depth" (ASK): Shows the modulation depth of the signal (see "Modulation depth and modulation index" on page 155 for more information). Figure 15-4: Modulation depth of a 2ASK signal ● "Modulation Deviation" (FSK): Shows the frequency shift of the signal.
R&S®FPC Digital Demodulation Measurements and Result Displays ● "Modulation Error": Shows the modulation error over time (% for ASK and Hz for FSK). The modulation error shows the deviation of the measured symbols from the ideal symbol locations. The ideal symbol locations are defined in a reference signal. Figure 15-6: Modulation error of a 2FSK signal Numerical results The diagram header contains various numerical results of the modulated and unmodulated signals.
R&S®FPC Digital Demodulation Measurement Configuration lation depth is the amount that the amplitude drops during the low state in %. The modulation depth is therefore a value < 100 %. Another way to express the amplitude variations of an ASK modulated signal is the modulation index. The expression comes from analog demodulation applications. The R&S FPC shows the modulation as a numeric result in the diagram header.
R&S®FPC Digital Demodulation Measurement Configuration Analyzer Lowpass filter of I/Q capture HW RX filter Auto (function of Tx filter) ASK / FSK demodulator Demodulation & symbol decision Modulator with Tx + Rx filter Correction parameters Signal processing, correction of estimated errors + Display evaluation Auto (function of Tx filter) Ref signal Modulator with Tx filter Auto fct(CaptureOV, symbol rate) Error signal Set by user Meas signal DUT (transmitter) Figure 15-8: Block diagram
R&S®FPC Digital Demodulation Measurement Configuration Defining the symbol rate The symbol rate defines the number of symbols that are transmitted per time unit (expressed in Hz in the R&S FPC). Therefore, the symbol rate also indicates how many transitions from one state to another (0 to 0, 0 to 1, etc.) are done in that time unit. 1. Press the "Meas" key to open the measurement menu. 2. Select the "Demod Parameters" menu item to open the demodulation menu. 3. Select the "Symbol Rate" menu item. 4.
R&S®FPC Digital Demodulation Frequency Configuration a b 1 2 3 4 = = = = = = Minimum required signal level Time between bursts No burst, because signal level increase is not enough No burst, because burst is too short No burst, because signal level increase occurs too soon after the last event Burst, because signal level is high enough, burst is long enough and time between bursts was large enough When a burst was found, the R&S FPC tries to demodulate the signal based on the demodulation parameters yo
R&S®FPC Digital Demodulation Amplitude Configuration If you do not know the frequency of the carrier signal, you have to find it out, for example by searching the frequency spectrum in the spectrum application in the area where you assume that the carrier is located.
R&S®FPC Digital Demodulation Trigger Configuration 2. Select the "Deviation Per Division" menu item. 3. Enter the deviation you like. The R&S FPC adjusts the scale of the y-axis accordingly. Note that the trace is also compressed or enlarged accordingly. 15.5 Sweep Configuration Access: "Sweep" Remote commands to control the measurement: ● Chapter 17.14.5, "Sweep Control", on page 293 The sweep menu provides settings to control the measurement and the way data is captured.
R&S®FPC Digital Demodulation Trigger Configuration ● "External Fall": Chapter 12.7, "Trigger Configuration", on page 107 In addition to the trigger settings available in the spectrum application, the digital demodulation application provides an I/Q power trigger source. Using the I/Q power trigger The I/Q power trigger initiates a measurement when the magnitude of the sampled I/Q data exceeds a certain level. 1. Press the "Sweep" key to open the sweep menu. 2.
R&S®FPC Vector Network Analyzer Measurements and Result Displays 16 Vector Network Analyzer Available for the R&S FPC1500 with the optional VNA application. The vector network analyzer (VNA) application provides the functionality to characterize networks with one or two ports. The VNA application allows you to determine the reflection or transmission characteristics of the device under test (DUT).
R&S®FPC Vector Network Analyzer Measurements and Result Displays 16.1.1 Transmission Measurement (S21) Access: "Meas" > "Transmission S21" The transmission (S21) measurement measures how much of the stimulus signal passes through the DUT in forward direction (from port 1 to port 2). It is therefore an indicator of how much loss, or gain, is caused by the DUT. The resulting trace shows the ratio of the reflected power measured at the RF input to the stimulus signal over the frequency range you select.
R&S®FPC Vector Network Analyzer Measurements and Result Displays R&S FPC Port 1 (RF Out) DUT Figure 16-2: Setup of a reflection S11 measurement If you measure the reflection on a system with two or more system components, the results are an aggregate over these components. Therefore you can only see the aggregated magnitude of the reflected power in the selected frequency range. Measuring the reflection 1. Connect the DUT to the R&S FPC as shown in Figure 16-2. 2.
R&S®FPC Vector Network Analyzer Measurements and Result Displays If the cable loss is constant over a large span (for example for low center frequencies), you can select any span. Note that if the cable loss is greater than 20 dB, you are better off using the S21 measurement, because the cable loss measurement might yield invalid results. Measuring the cable loss 1. Connect the DUT to the R&S FPC as shown in Figure 16-2. Make sure not to terminate the cable. 2.
R&S®FPC Vector Network Analyzer Measurements and Result Displays Because of its sensitivity by first measuring in the frequency domain and subsequent IFFT, the measurement is able to locate faults in a cable accurately. To keep this accuracy, the R&S FPC also accounts for any attenuation that occurs over distance in a cable. If you are measuring the cable only, make sure to terminate the other end into a load. For more information about configuring DTF measurements, see Chapter 16.1.
R&S®FPC Vector Network Analyzer Measurements and Result Displays 16.1.5 Measurement Formats Access: "Meas" > "Format" You can select one of several formats in which you can display the results of the VNA measurements. Selecting the measurement format 1. Press the "Meas" key to open the measurement menu. 2. Select the "Format" menu item to access the measurement formats. 3. Select the measurement you like. The availability of measurement formats depends on the measurement as indicated below.
R&S®FPC Vector Network Analyzer Measurements and Result Displays Shows the magnitude of the reflected power (cable loss). This format is a refined method to calculate the cable loss. When you select the format, the R&S FPC asks you to calibrate the measurement with a short and an open. This calculation method of cable loss results in a more accurate display of the cable loss curve and helps to avoid measurement errors. Available for the cable loss measurement.
R&S®FPC Vector Network Analyzer Measurements and Result Displays When you evaluate the electrical length, you can define an additional offset for the electrical length to be considered in the measurement. 4. Select the "Length Offset" menu item. 5. Define an offset as necessary. 16.1.6 DTF Configuration Access: "Meas" > "DTF Config" For valid measurement results, you need to specify the characteristics of the cable under test like model or frequency range. Remote commands to configure the bandwidth: 16.
R&S®FPC Vector Network Analyzer Measurements and Result Displays 6. Select the "Deselect Cable Model" menu item at any time if you want to perform measurements without using a particular cable model. Creating a custom cable model The R&S FPC provides two ways to define customized cable models. The first way is to define a cable model with the "Cable Model Editor" that is part of the R&S InstrumentView software package. The R&S InstrumentView is available for free on the internet.
R&S®FPC Vector Network Analyzer Frequency Configuration Defining the cable length The cable length is the sum of the start and stop distances you define for the measurement. If you do not know the exact length of the cable, define a length that is about 20 % to 50 % larger than the best estimate. 1. Press the "Freq" key to enter the frequency menu. 2. Select the "Start Distance" menu item to define the start of the measurement. 3. Select the "Stop Distance" menu item to define the stop of the measurement.
R&S®FPC Vector Network Analyzer Frequency Configuration 2. Select the "Auto Span" menu item. The R&S FPC automatically calculates the best span for the best length resolution. If the required span is too large for the current center frequency, the R&S FPC changes the center frequency to the smallest possible frequency. or 3. Select the "Manual Span" menu item. 4. Enter the span you need. The R&S FPC adopts the new span.
R&S®FPC Vector Network Analyzer Amplitude Configuration The R&S FPC couples the frequency and span settings across all measurements. 16.3 Amplitude Configuration Access: "Ampt" Access: "Setup" > "Config Overview" > "Amplitude" (selected settings) Remote commands to configure the amplitude: ● Chapter 17.16.2, "Amplitude", on page 309 The R&S FPC provides several methods to adjust the scale of the y-axis in the measurement diagram.
R&S®FPC Vector Network Analyzer Bandwidth Configuration Defining the display range The display range defines the scale of the vertical axis and therefore the amplitude between two horizontal grid lines. The unit depends on the measurement format. When you change the display range, you can increase or decrease the amplitude the R&S FPC displays and, for example, include signal parts that are outside the displayed screen area. The positions of the reference value and the trace do not change. 1.
R&S®FPC Vector Network Analyzer Sweep Configuration Figure 16-5: Indicator of manual resolution bandwidth ● "RBW: Auto" Automatically selects an appropriate measurement bandwidth depending on the current frequency span. The automatically selected bandwidth is a compromise between measurement speed and performance. 16.5 Sweep Configuration Access: "Sweep" Access: "Setup" > "Config Overview" > "Analysis" (selected settings) Remote commands to configure the amplitude: ● Chapter 17.16.
R&S®FPC Vector Network Analyzer Marker Configuration Defining the number of measurement points The number of (measurement) points defines the number of measurements performed during a sweep. Thus, it indirectly sets the frequencies of those measurements. The distance from one measurement point to the next depends on the currently set frequency range (span divided by number of points). However, the measurement points are spread evenly over the selected frequency range.
R&S®FPC Vector Network Analyzer Marker Configuration ● "Mkr→" > "Set to ": Chapter 12.9.2, "Automatic Marker Positioning", on page 117 ● "Mkr→" > "Search Ranges": Chapter 12.9.3, "Marker Search Ranges", on page 118 Using markers in the Smith diagram In addition to the standard marker functionality, the Smith chart also features several marker output formats. In its default state, the marker position is specified by the marker frequency and complex resistance in Ω.
R&S®FPC Vector Network Analyzer Limit Line Configuration 16.8 Limit Line Configuration Access: "Lines" Remote commands to work with limit lines: ● Chapter 17.16.8, "Limit Lines", on page 320 Limit line settings in the VNA application described elsewhere: ● "Display Line": Chapter 12.11, "Display Lines", on page 123Chapter 12.9.1, "Marker Positioning", on page 115 ● "Show Limit Line": "Selecting a limit line" on page 125 ● "Upper Limit": Chapter 12.10.
R&S®FPC Remote Control Remote Control Basics 17 Remote Control ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Remote Control Basics......................................................................................... 180 Common Commands............................................................................................ 195 Preset....................................................................................................................199 Network Connection.........................................
R&S®FPC Remote Control Remote Control Basics specific commands, error handling and the status registers. The tutorial "Automatic Measurement Control - A tutorial on SCPI and IEEE 488.2" from John M. Pieper (R&S order number 0002.3536.00) provides detailed information on concepts and definitions of SCPI. The requirements that the SCPI standard places on command syntax, error handling and configuration of the status registers are explained in detail in the following sections.
R&S®FPC Remote Control Remote Control Basics 17.1.1.3 Protocols VXI-11 basics The VXI-11 standard is based on the ONC-RPC protocol which in turn relies on TCP/IP as the network/transport layer. The TCP/IP network protocol and the associated network services are preconfigured. TCP/IP ensures connection-oriented communication, where the order of the exchanged messages is adhered to and interrupted links are identified. With this protocol, messages cannot be lost.
R&S®FPC Remote Control Remote Control Basics Core channel (program, response, control messages) Instrument Abort channel (abort) Controller Interrupt channel (service request) Figure 17-2: VXI-11 channels between instrument and controller The number of controllers that can address an instrument is practically unlimited in the network. In the instrument, the individual controllers are clearly distinguished. This distinction continues up to the application level in the controller, i.e.
R&S®FPC Remote Control Remote Control Basics cmd = "FREQ:CENT 100MHz" status = viWrite(vi, Cmd, Len(Cmd), retCount) //set span to 10 MHz cmd = "FREQ:SPAN 10MHz" status = viWrite(vi, Cmd, Len(Cmd), retCount) //set reference level to -10 dBm cmd = "DISP:TRAC:Y:RLEV -10dBm" status = viWrite(vi, Cmd, Len(Cmd), retCount) viclose vi viclose default RM Changing the IP address In order to operate the instrument via remote control, it must be accessed via LAN (IP address) or USB (fixed IP address).
R&S®FPC Remote Control Remote Control Basics command recognition and execution. The receipt of DCL clears the input buffer and immediately resets the command recognition. 17.1.3.2 Command Recognition Here the expression "instrument hardware" denotes the part of the instrument fulfilling the actual instrument function - signal generation, measurement etc. The controller is not included.
R&S®FPC Remote Control Remote Control Basics 17.1.4.1 Syntax for Common Commands Common (= device-independent) commands consist of a header preceded by an asterisk (*), and possibly one or more parameters. Table 17-1: Examples of common commands 17.1.4.2 *RST RESET Resets the instrument. *ESE EVENT STATUS ENABLE Sets the bits of the event status enable registers. *ESR? EVENT STATUS QUERY Queries the contents of the event status register.
R&S®FPC Remote Control Remote Control Basics Case-insensitivity Upper case and lower case notation only serves to distinguish the two forms in the manual, the instrument itself is case-insensitive. Numeric Suffixes If a command can be applied to multiple instances of an object, e.g. specific channels or sources, the required instances can be specified by a suffix added to the command. Numeric suffixes are indicated by angular brackets (<1...4>, , ) and are replaced by a single value in the command.
R&S®FPC Remote Control Remote Control Basics Optional mnemonics with numeric suffixes Do not omit an optional mnemonic if it includes a numeric suffix that is relevant for the effect of the command. Example: Definition:DISPlay[:WINDow<1...4>]:MAXimize Command: DISP:MAX ON refers to window 1. In order to refer to a window other than 1, you must include the optional WINDow parameter with the suffix for the required window. DISP:WIND2:MAX ON refers to window 2. 17.1.4.
R&S®FPC Remote Control Remote Control Basics ● N (nano) Example: SENSe:FREQ:STOP 1.5GHz = SENSe:FREQ:STOP 1.5E9 Some settings allow relative values to be stated in percent. According to SCPI, this unit is represented by the PCT string. Example: HCOP:PAGE:SCAL 90PCT Special Numeric Values The following mnemonics are special numeric values. In the response to a query, the numeric value is provided. ● MIN and MAX: denote the minimum and maximum value.
R&S®FPC Remote Control Remote Control Basics Example: Setting command: HCOPy:DEV:COL ON Query: HCOPy:DEV:COL? Response: 1 Text Parameters Text parameters observe the syntactic rules for mnemonics, i.e. they can be entered using a short or long form. Like any parameter, they have to be separated from the header by a white space. In the response to a query, the short form of the text is provided.
R&S®FPC Remote Control Remote Control Basics Table 17-2: Syntax elements : The colon separates the mnemonics of a command. ; The semicolon separates two commands of a command line. It does not alter the path. , The comma separates several parameters of a command. ? The question mark forms a query. * The asterisk marks a common command. '' Quotation marks introduce a string and terminate it (both single and double quotation marks are possible).
R&S®FPC Remote Control Remote Control Basics 17.1.4.5 Structure of a Command Line A command line may consist of one or several commands. It is terminated by one of the following: ● ● with EOI ● EOI together with the last data byte Several commands in a command line must be separated by a semicolon ";". Example: MMEM:COPY "Test1","MeasurementXY";:HCOP:ITEM ALL This command line contains two commands.
R&S®FPC Remote Control Remote Control Basics ● Truth values (Boolean values) are returned as 0 (for OFF) and 1 (for ON). Example: Setting command: HCOPy:DEV:COL ON Query: HCOPy:DEV:COL? Response: 1 ● Text (character data) is returned in a short form. Example: Setting command: HCOPy:PAGE:ORIentation LANDscape Query: HCOP:PAGE:ORI? Response: LAND ● Invalid numerical results In some cases, particularly when a result consists of multiple numeric values, invalid values are returned as 9.
R&S®FPC Remote Control Remote Control Basics As a general rule, send commands and queries in different program messages. Example: Overlapping command with *OPC The instrument implements INITiate[:IMMediate] as an overlapped command. Assuming that INITiate[:IMMediate] takes longer to execute than *OPC, sending the following command sequence results in initiating a sweep and, after some time, setting the OPC bit in the ESR: INIT; *OPC.
R&S®FPC Remote Control Common Commands *OPC with a service request 1. Set the OPC mask bit (bit no. 0) in the ESE: *ESE 1 2. Set bit no. 5 in the SRE: *SRE 32 to enable ESB service request. 3. Send the overlapped command with *OPC . 4. Wait for a service request. The service request indicates that the overlapped command has finished. *OPC? with a service request 1. Set bit no. 4 in the SRE: *SRE 16 to enable MAV service request. 2. Send the overlapped command with *OPC?. 3. Wait for a service request.
R&S®FPC Remote Control Common Commands *OPC............................................................................................................................ 197 *OPT?...........................................................................................................................197 *RST.............................................................................................................................197 *SRE.....................................................................
R&S®FPC Remote Control Common Commands *IST? Individual status query Returns the contents of the IST flag in decimal form. The IST flag is the status bit which is sent during a parallel poll. Return values: 0|1 Usage: Query only *OPC Operation complete Sets bit 0 in the event status register when all preceding commands have been executed. This bit can be used to initiate a service request.
R&S®FPC Remote Control Common Commands Parameters: Contents of the service request enable register in decimal form. Bit 6 (MSS mask bit) is always 0. Range: 0 to 255 *STB? Status byte query Reads the contents of the status byte in decimal form. Usage: Query only *TRG Trigger Triggers all actions waiting for a trigger event. In particular, *TRG generates a manual trigger signal. This common command complements the commands of the TRIGger subsystem.
R&S®FPC Remote Control Preset 17.3 Preset SYSTem:PRESet........................................................................................................... 199 SYSTem:PRESet:FACTory..............................................................................................199 SYSTem:PRESet:MODE.................................................................................................199 SYSTem:PRESet:USER.......................................................................................
R&S®FPC Remote Control Network Connection Parameters: Example: String containing the path and name of the file, including the filename extension (.set). The path and file name comply with Windows conventions. Note that the folder references in the string are case-sensitive. //Select user-defined preset state SYST:PRES:MODE USER SYST:PRES:USER '\Public\funny\result.set' 17.4 Network Connection SYSTem:COMMunicate:LAN:ETHernet?......................................................................
R&S®FPC Remote Control System Configuration Parameters: String containing the subnet mask ('x.x.x.x'). *RST: Example: '255.255.255.0' //Select subnet mask SYST:COMM:SOCK:DHCP OFF SYST:COMM:LAN:SUBM '255.255.255.0' SYSTem:COMMunicate:SOCKet:ADDRess This command defines the IP address of the R&S FPC. Prerequisites for this command ● Turn off DHCP (SYSTem:COMMunicate:SOCKet:DHCP[:STATe]). Parameters: String containing the IP address ('x.x.x.x').
R&S®FPC Remote Control System Configuration SYSTem:HELP:HEADers?.............................................................................................. 205 SYSTem:HELP:SYNTax?................................................................................................205 SYSTem:LANGuage.......................................................................................................205 SYSTem:LANGuage:CATalog?..................................................................................
R&S®FPC Remote Control System Configuration Parameters: REFerence Input for external reference signal. TRIGger Input for external trigger. *RST: Example: TRIGger //Configure the BNC connector SYST:BNC1:MODE TRIG SYSTem:DATE , , This command defines the date of the system calendar.
R&S®FPC Remote Control System Configuration Return values: Number that contains information about the error. Negative number: error as defined in the SCPI standard. Positive number: error that is specific to the R&S FPC. Example: //Query complete error queue SYST:ERR:CODE:ALL? Usage: Query only SYSTem:ERRor:CODE[:NEXT]? This command queries the code of the next error in the error queue. If the error queue is empty, the command returns 0.
R&S®FPC Remote Control System Configuration SYSTem:HELP:HEADers? This command returns a list of all available remote control commands. Return values: String containing all available remote control commands. Example: //Return the syntax of all available commands SYST:HELP:HEAD? Usage: Query only SYSTem:HELP:SYNTax? This command returns the full syntax of the specified command. Return values: String containing the command you want to query. Example: //Return the full syntax.
R&S®FPC Remote Control System Configuration ● SYSTem:STORe:TOTal: Queries the size of the memory. ● SYSTem:STORe:USED: Queries how much memory is currently used. Return values: Example: //Query total size of storage memory SYST:STOR:TOT? Usage: Query only SYSTem:STORe:FREE? SYSTem:STORe:TOTal? SYSTem:MEMory:USED? These command query the current state of the RAM. ● SYSTem:MEMory:FREE: Queries how much memory is available.
R&S®FPC Remote Control Display Settings Parameters: (integer) Range: *RST: (integer) Range: *RST: Example: 0 to 23 0 0 to 59 0 //Shift the time one hour ahead SYST:TZON 01,00 UNIT:LENGth This command selects the unit for distances. Suffix: Parameters: . irrelevant FEET Length units in feet. METers Length units in meter. *RST: Example: METers //Select length unit UNIT:LENG MET 17.6 Display Settings DISPlay:BRIGhtness.........
R&S®FPC Remote Control Audio Settings Parameters: ON | OFF | 1 | 0 *RST: Example: ON //Turn off display during remote operation SYST:DISP:UPD OFF 17.7 Audio Settings SYSTem:BEEPer:KEY:VOLume...................................................................................... 208 SYSTem:BEEPer:POVerload[:STATe]...............................................................................208 SYSTem:BEEPer:VOLume..................................................................................
R&S®FPC Remote Control Data Management Example: //Define the volume of the system beeper SYST:BEEP:VOL 0.50 17.8 Data Management DISPlay[:WINDow]:FETCh?.......................................................................................209 HCOPy:DEVice:LANGuage.............................................................................................209 HCOPy[:IMMediate]....................................................................................................... 210 MMEMory:CATalog?...
R&S®FPC Remote Control Data Management Parameters: Example: PNG | JPG //Select the png format for screenshots HCOP:DEV:LANG PNG HCOPy[:IMMediate] This command takes a screenshot of the current display contents and stores it on the R&S FPC internal memory. Prerequisites for this command ● Define a file name for the screenshot (MMEMory:NAME). Example: //Make and store a screenshot of the current screen in a file 'Test.png'. HCOP:DEV:LANG PNG MMEM:NAME '\Public\funny\screenshot.
R&S®FPC Remote Control Data Management Example: //Open directory \Public. MMEM:CDIR '\Public' //Return all directories in the \Public directory MMEM:CAT:DIR? Usage: Query only MMEMory:CDIRectory This command changes the current directory. Parameters: Example: String containing the path to the destination directory. The path and file name comply with Windows conventions. Note that the folder references in the string are case-sensitive. //Open directory "\Public". MMEM:CDIR '\Pub
R&S®FPC Remote Control Data Management Prerequisites for this command ● Create an empty file (MMEMory:NAME). Parameters: String containing the path and name of the file, including the filename extension. The path and file name comply with Windows conventions. Note that the folder and filename references in the string are casesensitive. Data block with the following structure. # Hash sign. Length of the length information.
R&S®FPC Remote Control Data Management Usage: Setting only MMEMory:FILE [, ] This command creates a file. If you do not define the block data, the command creates an empty file. You can add block data later with MMEMory:DATA. Parameters: String containing the path and name of the file, including the filename extension. The path and file name comply with Windows conventions. Note that the folder and filename references in the string are casesensitive.
R&S®FPC Remote Control Data Management Example: //Change date stamp of result.set file MMEM:FILE:TIME 1,'\Public\result.set', 2006,04,01 MMEMory:FILE:TIME [, , , ] This command defines the time stamp of a file. Parameters: String containing the path and name of the file, including the filename extension. The path and file name comply with Windows conventions. Note that the folder and filename references in the string are casesensitive.
R&S®FPC Remote Control Data Management Setting parameters: String containing the path and new directory name. The path and file name comply with Windows conventions. Note that the folder references in the string are case-sensitive. Example: //Create a new directory MMEM:MDIR '\Public\funny' Usage: Setting only MMEMory:MOVE , This command moves files to another directory. At the same time, you can rename files with this command.
R&S®FPC Remote Control Data Management Example: //Take a screenshot MMEM:NAME 'Public\Screeshots\Test.png' HCOP MMEMory:RDIRectory This command deletes the indicated directory. Setting parameters: String containing the path and name of the directory you want to delete. The path and folder name comply with Windows conventions. Note that the folder references in the string are case-sensitive. Example: //Delete a directory MMEM:RDIR '\Public\funny' Usage: Setting only MMEMory:ST
R&S®FPC Remote Control Signal Source Configuartion SYSTem:SET:DISPlay? This command queries the the contents of the currently active dataset, including a screenhot of the current display contents, and returns them in binary format. Return values: Contents of the dataset and a screenshot in binary format. Example: //Query current dataset and screenshot SYST:DISP:SET? Usage: Query only SYSTem:SET:LOCK This command adds write-protection to a file.
R&S®FPC Remote Control Signal Source Configuartion SOURce:TG:AUTO This command turns the tracking generator on and off. Prerequisites for this command ● Turn on signal source (SOURce:TG[:STATe]). ● Select a span > 0. Using the tracking generator is not possible for time domain measurements (span = 0). For time domain measurements, you have to turn off the tracking generator and either generate a signal whose frequency is fix or is coupled to the center frequency.
R&S®FPC Remote Control Signal Source Configuartion Prerequisites for this command ● Turn on signal source (SOURce:TG[:STATe]). ● Turn off tracking generator (SOURce:TG:AUTO). Parameters: ON | 1 Generates a signal whose frequency corresponds to the center frequency (signal source mode "Coupled CW"). You can define the center frequency with [SENSe: ]FREQuency:CENTer. OFF | 0 Generates a signal whose frequency remains the same (signal source mode "CW").
R&S®FPC Remote Control Calibration Example: //Turn on signal source SOUR:TG ON 17.10 Calibration CALibration:ABORt...................................................................................................220 CALibration:CONTinue?............................................................................................220 CALibration:MODE?................................................................................................. 221 CALibration:STARt?.........................
R&S®FPC Remote Control Calibration 'Connect Through' Connect a through to ports 1 and 2. 'Disconnect DUT from port 1' 'Calibration Done' Calibration has been finished. No further actions required. CALibration:MODE? This command queries the current calibration type. Suffix: Return values: . irrelevant 0 Not calibrated or default calibration. 1 User calibration.
R&S®FPC Remote Control Calibration Example: //Start full 1-port calibration MEAS:MODE REFL CAL:STAR? S11C //would return the instruction 'Connect Open to Port 1' Usage: Query only Table 17-7: Return values: Possible instructions for calibration 'Connect Open to Port 1' Connect the open to port 1 before resuming calibration. 'Connect Short to Port 1' Connect the short to port 1 before resuming calibration. 'Connect Load to Port 1' Connect the load to port 1 before resuming calibration.
R&S®FPC Remote Control Remote Commands of the Spectrum Application 17.11 Applications INSTrument[:SELect]......................................................................................................223 INSTrument[:SELect] This command selects the measurement application. Parameters: ADEMod Selects the analog demodulation application. DDEMod Selects the digital demodulation application. RECeiver Selects the receiver application.
R&S®FPC Remote Control Remote Commands of the Spectrum Application 17.12.1.1 Power Measurements The following commands are available for all power measurements (channel power, occupied bandwidth etc.) CALCulate:MARKer:FUNCtion:LEVel:ONCE.........................................................224 CALCulate:MARKer:FUNCtion:POWer:PRESet.................................................... 224 CALCulate:MARKer:FUNCtion:POWer:PRESet:CHECk?.......................................
R&S®FPC Remote Control Remote Commands of the Spectrum Application Setting parameters: String containing the file name of the standard. Make sure to use the correct file extension (for example .chpstd for channel power measurements or .obwstd for occupied bandwidth measurements. Example: //Select the 3GPP WCDMA standard for channel power measurements CALC:MARK:FUNC:POW:PRES '3GPP WCDMA.
R&S®FPC Remote Control Remote Commands of the Spectrum Application Suffix: , . irrelevant Query parameters: Return values: The return values depend on the power measurement. CPOWer Returns the results for channel power measurements. The return value is the power of the channel.
R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: CPOWer Selects the channel power measurement. OBANdwidth | OBWidth Selects the occupied bandwidth measurement (OBW). TDMA Selects the TDMA power measurement. Example: //Select the channel power measurement CALC:MARK:FUNC:POW:SEL CPOW CALCulate:MARKer:FUNCtion:POWer[:STATe] This command turns a power measurement on and off. Suffix: , Parameters: .
R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: *RST: 3.84 MHz Default unit: Hz Example: //Define the channel bandwidth CALC:MARK:FUNC:CPOW:BAND 10MHZ CALCulate:MARKer:FUNCtion:CPOWer:MODE This command selects the display mode for channel power measurements. Prerequisites for this command ● Select the channel power measurement (CALCulate:MARKer: FUNCtion:POWer:SELect). Suffix: , Parameters: .
R&S®FPC Remote Control Remote Commands of the Spectrum Application Prerequisites for this command ● Select the channel power measurement (CALCulate:MARKer: FUNCtion:POWer:SELect). Suffix: , . irrelevant Parameters: ON | OFF | 1 | 0 *RST: Example: 17.12.1.3 OFF | 0 //Display the measured channel power in a 1 Hz bandwidth CALC:MARK:FUNC:POW:RES:PHZ ON Third Order Intermodulation The following remote commands are exclusive to the occupied bandwidth measurement.
R&S®FPC Remote Control Remote Commands of the Spectrum Application Suffix: , . irrelevant Setting parameters: ONCE Example: //Search for signals CALC:MARK:FUNC:TOI ON CALC:MARK:FUNC:TOI:SEAR Usage: Setting only CALCulate:MARKer:FUNCtion:TOI[:STATe] This command turns the third order intermodulation measurement on and off. Suffix: , Parameters: . irrelevant ON | 1 Turns on the third order intermodulation measurement.
R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: *RST: 3.84 MHz Default unit: Hz Example: //Define a channel bandwidth CALC:MARK:FUNC:OBW:BAND 1 MHZ CALCulate:MARKer:FUNCtion:OBW:BANDwidth:PCT CALCulate:MARKer:FUNCtion:OBAN:BANDwidth:PCT This command defines the percentage of the total power that defines the occupied bandwidth. Suffix: , .
R&S®FPC Remote Control Remote Commands of the Spectrum Application Example: 17.12.1.6 //Define the burst length CALC:MARK:FUNC:TDMA:BURS 80 US Harmonic Distortion The following remote commands are exclusive to the harmonic distortion measurement. CALCulate:MARKer:FUNCtion:HARMonics:DISTortion?........................................ 232 CALCulate:MARKer:FUNCtion:HARMonics:LIST?.................................................232 CALCulate:MARKer:FUNCtion:HARMonics:NHARmonics..........
R&S®FPC Remote Control Remote Commands of the Spectrum Application Return values: Returns one value for every harmonic. The first value is the absolute power of the first harmonic. The level unit depends on the unit you have set with the UNIT: POWercommand. The other values are power levels relative to the first harmonic. The unit for these is dB.
R&S®FPC Remote Control Remote Commands of the Spectrum Application Example: //Activate the harmonic distortion measurement. CALC:MARK:FUNC:HARM ON //Set the number of harmonics to 4. CALC:MARK:FUNC:HARM:NHAR 4 //Adjust the settings of the measurement. CALC:MARK:FUNC:HARM:PRES //Query the position of the harmonics and the total harmonic distortion.
R&S®FPC Remote Control Remote Commands of the Spectrum Application CALCulate:DELTamarker:X:RELative CALCulate:MARKer:FUNCtion:MDEPth:RESult?...................................................235 CALCulate:MARKer:FUNCtion:MDEPth[:STATe]................................................... 235 CALCulate:MARKer:FUNCtion:MDEPth:RESult? This command queries the results of the AM modulation depth measurement.
R&S®FPC Remote Control Remote Commands of the Spectrum Application [SENSe:]CHANnel:TABLe:SET........................................................................................237 [SENSe:]FREQuency:CENTer......................................................................................... 238 [SENSe:]FREQuency:CENTer:STEP................................................................................238 [SENSe:]FREQuency:CENTer:STEP:LINK.............................................................
R&S®FPC Remote Control Remote Commands of the Spectrum Application [SENSe:]CHANnel:TABLe:SELect This command selects a channel table configured for the link direction you have selected with [SENSe:]CHANnel:TABLe:SET. Note that if you have previously selected a channel table with [SENSe:]CHANnel: TABLe:SELect:DOWNlink or [SENSe:]CHANnel:TABLe:SELect:UPLink, this command replaces that file. Parameters: String containing the file name of the channel table.
R&S®FPC Remote Control Remote Commands of the Spectrum Application [SENSe:]FREQuency:CENTer This command defines the center frequency of the R&S FPC. In the spectrum application, the command also defines the frequency for time domain measurements (span = 0). Parameters: Refer to the datasheet for details on the frequency range of your R&S FPC.
R&S®FPC Remote Control Remote Commands of the Spectrum Application Example: //Couple the step size to the span FREQ:CENT:STEP:LINK DIVT [SENSe:]FREQuency:INPut:MODE This command selects the frequency input mode. Select the channel frequency mode only if you want to work with channel tables. In this case, the input of the center frequency is not a frequency value, but a channel number. Parameters: FREQuency Center frequency is defined in terms of a frequency (in Hz).
R&S®FPC Remote Control Remote Commands of the Spectrum Application [SENSe:]FREQuency:OFFSet This command defines a frequency offset. Parameters: Range: depends on the start frequency to 100 GHz *RST: 0 Hz Default unit: Hz Example: //Define a frequency offset FREQ:OFFS 100MHZ [SENSe:]FREQuency:SPAN This command defines the frequency span. If you define a span of 0 Hz, the R&S FPC starts a measurement in the time domain.
R&S®FPC Remote Control Remote Commands of the Spectrum Application Example: //Define start frequency FREQ:STAR 20MHZ [SENSe:]FREQuency:STOP This command defines the stop frequency for measurements in the frequency domain (span > 0). Parameters: Refer to the datasheet for details on the frequency range of your R&S FPC. *RST: fmax Default unit: Hz Example: //Define stop frequency FREQ:STOP 500MHZ 17.12.3 Amplitude DISPlay[:WINDow]:TRACe:Y:SPACing..........
R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: LOGarithmic Select a logarithmic scale. When you select a logarithmic scale, you can define the display range manually or automatically. • Manual: DISPlay[:WINDow]:TRACe:Y[:SCALe] • Automatic: DISPlay[:WINDow]:TRACe:Y[: SCALe]:ADJust LINear Select a linear scale (%). The display range of a linear scale is fixed (0 % to 100 %).
R&S®FPC Remote Control Remote Commands of the Spectrum Application DISPlay[:WINDow]:TRACe:Y[:SCALe]:RLEVel This command defines the reference level. Suffix: . irrelevant irrelevant Parameters: The unit depends on UNIT:POWer. The available value range is specified in the data sheet.
R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: (integer) Range: *RST: Example: 0 to 10 10 //Set the reference position to the 5th grid line DISP:TRAC:Y:SPAC LOG DISP:TRAC:Y:RPOS 5 INPut:ATTenuation This command selects the RF attenuation. Effects of this command ● Turns off automatic selection of the attenuation and therefore the coupling to the reference level (INPut:ATTenuation:AUTO).
R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: LDIStortion Select "Auto Low Distortion" mode. LNOise Select "Auto Low Noise" mode. *RST: Example: LNOise //Select auto low noise attenuation INP:ATT:AUTO ON INP:ATT:MODE LNO INPut:GAIN:STATe This command turns the preamplifier on and off.
R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: RAM | RAZ | HZTE HZTE 75 Ω FSH-Z38 RAM 75 Ω RAM RAZ 75 Ω RAZ Example: //Select 75 Ω input impedance and the R&S RAZ as the matching pad. INPut:IMP 75;PAD RAZ [SENSe:]CORRection:TRANsducer:SELect This command selects a transducer factor. Suffix: . Transducer Parameters: String containing the file name of the transducer factor.R&S®FPC Remote Control Remote Commands of the Spectrum Application Prerequisites for this command ● Select a transducer ([SENSe:]CORRection:TRANsducer :SELect). Suffix: | . Transducer Parameters: ON | OFF | 1 | 0 *RST: Example: OFF | 0 //Turn on primary transducer CORR:TRAN1:SEL 'HE200A-20-200.pritrd' CORR:TRAN1 ON //Turn on secondary transducer CORR:TRAN2:SEL 'PreAmp.sectrd' CORR:TRAN2 ON UNIT:POWer This command selects the unit displayed on the y-axis. Suffix: .R&S®FPC Remote Control Remote Commands of the Spectrum Application Effects of this command ● Turns off automatic selection of resolution bandwidth ([SENSe:]BANDwidth[: RESolution]:AUTO). Parameters: (integer) Value adjustable in 1 - 3 steps (1 Hz, 3 Hz, 10 Hz, etc.). In addition, you can select a 200 kHz bandwidth. R&S®FPC Remote Control Remote Commands of the Spectrum Application Example: //Select video bandwidth BAND:VID 10KHZ [SENSe:]BWIDth:VIDeo:AUTO [SENSe:]BANDwidth:VIDeo:AUTO This command turns automatic selection of the resolution bandwidth on and off. Effects of this command ● Turn on automatic VBW selection to couple the VBW to the RBW. When you turn off automatic selection of the video bandwidth, you can select one manually with [SENSe:]BANDwidth:VIDeo. R&S®FPC Remote Control Remote Commands of the Spectrum Application Example: //Abort measurement and start a new one once abort is complete ABOR;*WAI INIT:IMM Usage: Event [SENSe:]SWEep:TIME This command defines the sweep time. Effects of this command ● Turns off automatic selection of the sweep time ([SENSe:]BANDwidth[: RESolution]:AUTO). Parameters: The available value range is specified in the datasheet. R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: ON | 1 Select continuous sweep mode. OFF | 0 Select single sweep mode. Example: //Turn on single sweep mode. INIT:CONT OFF INITiate[:IMMediate] The command initiates a new measurement sequence. Effects of this command ● In single sweep mode, with an average count > 0, the command restarts the measurement. ● When you have selected the maxhold, minhold or average trace mode the command resets the trace. R&S®FPC Remote Control Remote Commands of the Spectrum Application Example: //Define a trigger delay TRIG:SOUR EXT TRIG:SLOP POS TRIG:HOLD 500US TRIGger[:SEQuence]:LEVel:VIDeo This command defines the level of the video trigger. Prerequisites for this command ● Select span = 0 ([SENSe:]FREQuency:SPAN). ● Select video trigger source (TRIGger[:SEQuence]:SOURce). R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: IMMediate No trigger is applied. EXTernal Select an external trigger. VIDeo Select the video trigger. The video trigger is only available if span = 0 ([SENSe: ]FREQuency:SPAN). *RST: Example: IMMediate //Select external trigger TRIG:SOUR EXT 17.12.7 Traces CALCulate:MATH:COPY:MEMory..........................................................................253 CALCulate:MATH[:EXPRession][:DEFine]. R&S®FPC Remote Control Remote Commands of the Spectrum Application CALCulate:MATH[:EXPRession][:DEFine] This command defines the mathematical operation for the trace mathematics. Prerequisites for this command ● Save a trace to the memory (CALCulate:MATH:COPY:MEMory). ● Turn on trace mathematics (CALCulate:MATH:STATe). Suffix: . irrelevant irrelevant Parameters: (IMPLIED - MEMORY) Subtracts the memory trace from trace 1. R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: ON | OFF | 1 | 0 *RST: Example: OFF | 0 //Store trace 1 into memory and turn on memory trace DISP:TRAC1 ON DISP:TRAC1:MODE AVER CALC:MATH1:COPY:MEM DISP:TRAC:MEM ON DISPlay[:WINDow]:TRACe:MODE This command selects the trace mode. If you are using the average trace mode, you can set the number of measurements with [SENSe:]SWEep:COUNt. R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: ON | OFF | 1 | 0 *RST: Example: OFF | 0 //Turn on trace 2 DISP:TRAC2 ON FORMat[:DATA] This command selects the data format that is used for transmission of trace data from the R&S FPC to the controlling computer. Note that the command has no effect for data that you send to the R&S FPC. The R&S FPC automatically recognizes the data it receives, regardless of the format. R&S®FPC Remote Control Remote Commands of the Spectrum Application [SENSe:]DETector[:FUNCtion]:AUTO This command couples and decouples the detector to the trace mode. Suffix: . Trace Parameters: ON | OFF | 1 | 0 *RST: Example: ON | 1 //Turn off automatic detector selection DET:AUTO OFF [SENSe:]SWEep:COUNt This command defines the number of averages for the average trace mode. The R&S FPC performs one sweep for sweep count 0 or 1. R&S®FPC Remote Control Remote Commands of the Spectrum Application Return values: The R&S FPC returns 1183 values. Each value corresponds to one pixel of a trace. The unit depends on the measurement and the unit you have set with UNIT:POWer Note: If you use the auto peak detector, the command reads out positive peak values only. Example: //Read out the data for trace 1. TRAC:DATA? TRACE1 Usage: Query only 17.12.8 Marker CALCulate:DELTamarker:AOFF...................... R&S®FPC Remote Control Remote Commands of the Spectrum Application CALCulate:DELTamarker:MAXimum:NEXT This command moves a delta marker to the next higher trace maximum. If the delta marker is not active yet, the command also turns on that delta marker. Suffix: . irrelevant Marker Example: //Move delta marker 2 to the next higher value CALC:DELT2:MAX:NEXT Usage: Event CALCulate:DELTamarker:MAXimum[:PEAK] This command positions a delta marker on the current trace maximum. R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: Marker If you set the suffix at DELTamarker to 1, or use no suffix, the R&S FPC interprets this as delta marker 2 because the first marker has to be a normal marker. If more than one normal marker (2 to 6) is already active, the command turns these markers into delta markers. If no delta marker is active yet, the command activates the delta marker and positions it on the trace maximum. R&S®FPC Remote Control Remote Commands of the Spectrum Application Suffix: . irrelevant Marker Parameters: The unit depends on the measurement and marker input mode. Hz for measurements in the frequency domain. s for measurements in the time domain. No unit for channel input mode (CALCulate:MARKer: FREQuency:MODE). Example: //Set the delta marker at a distance of 5 kHz to the reference position. R&S®FPC Remote Control Remote Commands of the Spectrum Application CALCulate:MARKer:AOFF This command turns off all active markers, delta markers and active marker measurement functions. This command is an event and therefore has no query and no *RST value. Suffix: . irrelevant Marker Example: //Turn off all markers CALC:MARK:AOFF Usage: Event CALCulate:MARKer:FREQuency:MODE This command selects the marker frequency display mode. Suffix: . R&S®FPC Remote Control Remote Commands of the Spectrum Application Marker Example: //Match the reference level to the level of marker 1 CALC:MARK1:FUNC:REF Usage: Event CALCulate:MARKer:MAXimum:NEXT This command moves a marker to the next higher trace maximum. If the marker is not active yet, the command also turns on that marker. Suffix: . R&S®FPC Remote Control Remote Commands of the Spectrum Application CALCulate:MARKer[:STATe] This command turns markers on and off. If you do not use a suffix at MARKer, marker 1 is turned on. If one or more delta markers (2 to 6) are already active, the command turns these delta markers into normal markers. Suffix: . R&S®FPC Remote Control Remote Commands of the Spectrum Application Prerequisites for this command ● Turn on marker search limits (CALCulate:MARKer:X: SLIMits[:STATe]). If you perform a measurement in zero span, this command limits the evaluation range on the trace. Suffix: , , . irrelevant Parameters: The unit depends on the measurement: Hz for frequency domain, seconds for time domain. R&S®FPC Remote Control Remote Commands of the Spectrum Application CALCulate:MARKer:X:SLIMits[:STATe] This command turns marker search limits on and off. If you perform a measurement in zero span, this command limits the evaluation range on the trace. Suffix: , , . R&S®FPC Remote Control Remote Commands of the Spectrum Application CALCulate:MARKer:FUNCtion:NDBDown............................................................ 269 CALCulate:MARKer:FUNCtion:NDBDown:FREQuency?........................................ 269 CALCulate:MARKer:FUNCtion:NDBDown:RESult?............................................... 270 CALCulate:MARKer:FUNCtion:NDBDown:STATe.................................................. R&S®FPC Remote Control Remote Commands of the Spectrum Application Example: //Turn on single sweep mode and marker 1. INIT:CONT OFF CALC:MARK ON //Turn on the frequency counter for marker 1. CALC:MARK:COUN ON //Perform a measurement and query the results of the frequency counter. INIT;*WAI CALC:MARK:COUN:FREQ? CALCulate:MARKer:FUNCtion:DEModulation:HOLD R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: AM | FM *RST: Example: - See CALCulate:MARKer:FUNCtion: DEModulation:HOLD. CALCulate:MARKer:FUNCtion:DEModulation[:STATe] This command turns marker demodulation on and off. Prerequisites for this command ● Turn on a marker (CALCulate:MARKer[:STATe]). Suffix: , . R&S®FPC Remote Control Remote Commands of the Spectrum Application Prerequisites for this command ● Turn on n dB down measurement (CALCulate:MARKer:FUNCtion: NDBDown:STATe). Suffix: . irrelevant irrelevant (the n dB down marker function always uses marker 1) Return values: Absolute frequency of the n dB marker to the left of the reference marker in Hz. Absolute frequency of the n dB marker to the right of the reference marker in Hz. R&S®FPC Remote Control Remote Commands of the Spectrum Application Parameters: ON | OFF | 1 | 0 *RST: Example: OFF | 0 //Turn on the n dB marker function. CALC:MARK:FUNC:NDBD:STAT ON //Position two temporary markers 3 dB below a reference marker. CALC:MARK:FUNC:NDBD 3 //Query the frequency position of the n dB down markers; would return e.g. 100000000,200000000 CALC:MARK:FUNC:NDBD:FREQ? //Query the measurement result; would return e.g. R&S®FPC Remote Control Remote Commands of the Spectrum Application CALCulate:MARKer:FUNCtion:NOISe[:STATe] This command turns the noise measurement marker function on and off. You can query the results of the noise power density at the marker position with CALCulate:MARKer:FUNCtion:NOISe:RESult? Suffix: . irrelevant Marker (Only marker 1 (M1) or delta marker 2 (D2) are possible to select. R&S®FPC Remote Control Remote Commands of the Spectrum Application Suffix: . irrelevant Parameters: ON | OFF | 1 | 0 *RST: Example: OFF | 0 //Turn on display line CALC:DLIN:STAT ON 17.12.11 Limit Lines CALCulate:LIMit:BEEP[:STATe]............................................................................ 273 CALCulate:LIMit:COMMent?................................................................................ 273 CALCulate:LIMit:DEFine............................... R&S®FPC Remote Control Remote Commands of the Spectrum Application – CALCulate:LIMit:UPPer:THReshold Suffix: . irrelevant Limit line Return values: String containing the description of the limit line. Example: //Query the description of limit line 1. FREQ:SPAN 0HZ CALC:LIM:LOW:SEL 'GSM_Lower. R&S®FPC Remote Control Remote Commands of the Spectrum Application Example: //Minimum requirement of two data points CALC:LIM:DEF 'Limit','Empty comment',HZ,ABS,DBM,0,-70,100000000000,-70 CALC:LIM:UPP:SEL 'limit.abslim' Example: //More complex limit line CALC:LIM:DEF 'Limit','Empty comment',HZ,ABS,DBM, 0,-70,100000000,-70,100000000,-80,1000000000, -80,1000000000,-70,2000000000,-70 CALC:LIM:UPP:SEL 'limit. R&S®FPC Remote Control Remote Commands of the Spectrum Application Return values: Limit line • 0 for PASS • 1 for FAIL Example: //Perform a measurement and query the result of the check for limit line 1. CALC:LIM:UPP:THR -70 INIT;*WAI CALC:LIM1:FAIL? Usage: Query only CALCulate:LIMit:LOWer:SELect This command selects the lower limit line. R&S®FPC Remote Control Remote Commands of the Spectrum Application You can query the result of the limit check with CALCulate:LIMit:FAIL? Prerequisites for this command ● Select a limit line or define a threshold limit with one of the following commands: – CALCulate:LIMit:LOWer:SELect – CALCulate:LIMit:LOWer:THReshold – CALCulate:LIMit:UPPer:SELect – CALCulate:LIMit:UPPer:THReshold Suffix: . R&S®FPC Remote Control Remote Commands of the Spectrum Application Prerequisites for this command ● Select a limit line or define a threshold limit with one of the following commands: – CALCulate:LIMit:LOWer:SELect – CALCulate:LIMit:LOWer:THReshold – CALCulate:LIMit:UPPer:SELect – CALCulate:LIMit:UPPer:THReshold Suffix: . irrelevant Limit line Return values: Level unit of the limit line. R&S®FPC Remote Control Remote Commands of the Receiver Application Parameters: Unit depends on the unit you have currently selected for the vertical axis. Example: //Turn on threshold limit line CALC:LIM:UPP:THR -10DBM 17.13 Remote Commands of the Receiver Application ● ● ● ● ● ● ● ● Measurement Configuration..................................................................................279 Frequency............................................................................ R&S®FPC Remote Control Remote Commands of the Receiver Application TRACe[:DATA]? This command queries the trace data (measurement results in graphical result displays). Prerequisites for this command ● Select graphical result display (CALCulate:FEED). Return values: Returns one value for each measurement point. The type of value depends on the measurement (Hz for FM, PCT for AM). Example: //Query FM results CALC:FEED 'XTIMe:FM' TRAC? Usage: Query only 17.13. R&S®FPC Remote Control Remote Commands of the Receiver Application [SENSe:]SCAN:STARt This command defines the start frequency for a frequency scan. Prerequisites for this command ● Select frequency scan ([SENSe:]FREQuency:MODE). R&S®FPC Remote Control Remote Commands of the Receiver Application 17.13.3 Amplitude Commands to configure amplitude described elsewhere. R&S®FPC Remote Control Remote Commands of the Receiver Application Example: //Select CISPT bandwidth BAND:CISP 9KHZ [SENSe:]BANDwidth[:RESolution]:CISPr:AUTO This command turns automatic selection of the CISPR measurement bandwidth on and off. Parameters: ON | OFF | 1 | 0 *RST: Example: OFF //Select CISPR bandwidth manually BAND:CISP:AUTO OFF BAND:CISP 120KHZ 17.13.5 Sweep Control Commands to control the measurement described elsewhere. R&S®FPC Remote Control Remote Commands of the Receiver Application 17.13.7 Traces Commands to configure traces described elsewhere. ● Trace mode: DISPlay[:WINDow]:TRACe:MODE ● Memory trace: DISPlay[:WINDow]:TRACe:MEMory[:STATe] ● Data format of trace export: FORMat[:DATA] [SENSe:]DETector[:FUNCtion].................................................................................... 284 DISPlay[:WINDow]:TRACe:STYLe........................................................................ R&S®FPC Remote Control Remote Commands of the Receiver Application TRACe[:DATA]? This command queries the trace data (measurement results in graphical result displays). Query parameters: If you do not specify a parameter, the command queries the latest measurement results. PHOLd Queries the maxhold information of the bargraph or frequency scan. R&S®FPC Remote Control Remote Commands of the Analog Demodulation CALCulate:MARKer:X:SLIMits[:STATe] Commands to configure delta markers described elsewhere. R&S®FPC Remote Control Remote Commands of the Analog Demodulation ● ● ● Bandwidth............................................................................................................. 292 Sweep Control.......................................................................................................293 Limits.....................................................................................................................294 17.14.1 Measurements and Result Displays CALCulate:FEED........ R&S®FPC Remote Control Remote Commands of the Analog Demodulation Example: //Query modulation frequency CALC:MARK:FUNC:ADEM:AFR? Usage: Query only CALCulate:MARKer:FUNCtion:ADEMod:AM[:RESult]? This command queries the modulation characteristics of an AM signal. Prerequisites for this command ● Measure an AM signal (CALCulate:FEED). Suffix: Query parameters: . irrelevant MIDDle Queries the average modulation index. MPEak Queries the minimum modulation index. R&S®FPC Remote Control Remote Commands of the Analog Demodulation CALCulate:MARKer:FUNCtion:ADEMod:FERRor[:RESult]? This command queries the carrier frequency offset. Suffix: . irrelevant Return values: Default unit: Hz Example: //Query carrier frequency offset CALC:MARK:FUNC:ADEM:FERR? Usage: Query only CALCulate:MARKer:FUNCtion:ADEMod:FM[:RESult]? This command queries the modulation characteristics of an FM signal. R&S®FPC Remote Control Remote Commands of the Analog Demodulation Suffix: . irrelevant Return values: Default unit: PCT Example: //Query modulation index CALC:FEED 'XTIM:AMS' CALC:MARK:FUNC:ADEM:MIND? Usage: Query only CALCulate:MARKer:FUNCtion:ADEMod:SINad[:RESult]? This command queries the SINAD result. Suffix: . R&S®FPC Remote Control Remote Commands of the Analog Demodulation Return values: Default unit: Hz Example: //Query frequency deviation CALC:FEED 'XTIM:FMS' ADEM:FM:OFFS? Usage: Query only TRACe[:DATA]? This command queries the trace data (measurement results in graphical result displays). Prerequisites for this command ● Select graphical result display (CALCulate:FEED). Return values: Returns one value for each measurement point. R&S®FPC Remote Control Remote Commands of the Analog Demodulation ● Impedance: INPut:IMPedance INPut:IMPedance:PAD DISPlay[:WINDow]:TRACe:Y[:SCALe]:PDIVision.................................................... 292 DISPlay[:WINDow]:TRACe:Y[:SCALe]:PDIVision This command defines the range of the y-axis for the graphical results. Suffix: . irrelevant irrelevant Parameters: (integer only) The unit depends on the result. • PCT for AM results (0. R&S®FPC Remote Control Remote Commands of the Analog Demodulation You can select the time constant of the filter with [SENSe:]FILTer:DEMPhasis: TCONstant. Prerequisites for this command ● Select 200 kHz or 300 kHz demodulation bandwidth ([SENSe:]ADEMod: BANDwidth:DEModulation). Parameters: ON | OFF | 1 | 0 *RST: Example: OFF //Turn on deemphasis filter ADEM:BAND:DEM 300KHZ FILT:DEMP ON [SENSe:]FILTer:DEMPhasis:TCONstant R&S®FPC Remote Control Remote Commands of the Analog Demodulation INITiate:CONTinuous [SENSe:]ADEMod:MTIMe?............................................................................................. 294 [SENSe:]ADEMod:MTIMe? This command queries the measurement time. Return values: R&S®FPC Remote Control Remote Commands of the Digital Demodulation Example: //Query limit check results CALC:ADEM:LIM:FAIL? Usage: Query only CALCulate:ADEMod:LIMit:SELect This command selects a set of limit values for AM and FM measurements. Selecting a set of limit values automatically initiates a limit check of the numerical results. Suffix: Parameters: Example: . irrelevant String containing the file name of the limits definition file. The file extension is either . R&S®FPC Remote Control Remote Commands of the Digital Demodulation CALCulate:FEED This command selects the result display. Suffix: Parameters: . irrelevant 'XTIM:DDEM:ERR:MPH' Selects the modulation error result display. 'XTIM:DDEM:EYE' Selects the eye diagram. 'XTIM:DDEM:MEAS' Selects the modulation depth (ASK) or modulation deviation (FSK) result display. 'XTIM:DDEM:SYMB' Selects the symbol stream result display. R&S®FPC Remote Control Remote Commands of the Digital Demodulation Example: //Query carrier frequency drift CALC:MARK:FUNC:DDEM:CFDR? Usage: Query only CALCulate:MARKer:FUNCtion:DDEMod:CFERror[:RESult]? This command queries the carrier frequency error of the measured signal. Suffix: . R&S®FPC Remote Control Remote Commands of the Digital Demodulation Example: //Query frequency deviation CALC:MARK:FUNC:DDEM:MDEV? Usage: Query only CALCulate:MARKer:FUNCtion:DDEMod:MERRor[:RESult]? This command queries the magnitude error of the measured signal. Prerequisites for this command ● Select FSK demodulation ([SENSe:]DDEMod). Suffix: . R&S®FPC Remote Control Remote Commands of the Digital Demodulation Example: //Query modulation error CALC:MARK:FUNC:DDEM:MOER? Usage: Query only CALCulate:MARKer:FUNCtion:DDEMod:MPOWer[:RESult]? This command queries the power of the carrier signal. Suffix: . R&S®FPC Remote Control Remote Commands of the Digital Demodulation TRACe[:DATA]? This command queries the trace data (measurement results in graphical result displays). Return values: Returns one value for each measurement point. The type of value depends on the measurement and result display. "Symbols": returns the symbol stream. "Modulation Deviation": returns one value (frequency deviation) for each symbol in Hz. R&S®FPC Remote Control Remote Commands of the Digital Demodulation Example: //Define roll-off factor DDEM:FILT:ALPH 0.35 [SENSe:]DDEMod:FILTer:NAME This command selects the measurement filter. You can define the filter shape with [SENSe:]DDEMod:FILTer:ALPHa. Parameters: If you want to use no filter (unfiltered measurements), use [SENSe:]DDEMod:FILTer[:STATe]. GAUS Select a Gaussian filter. RC Select a raised cosine filter. RRC Selects a root raised cosine filter. R&S®FPC Remote Control Remote Commands of the Digital Demodulation [SENSe:]DDEMod:TIME This command defines the number of symbols to be evaluated. Parameters: (integer only) Range: *RST: Example: 20 to depends on measurement filter 100 //Define the number of symbols DDEM:TIME 150 17.15.3 Frequency Commands to configure the frequency described elsewhere. R&S®FPC Remote Control Remote Commands of the Digital Demodulation Parameters: (integer only) The unit depends on the result. • PCT for ASK results (1 % to 100 % per grid division). • Hz for FSK results (1 kHz to 1 MHz per grid division). R&S®FPC Remote Control Remote Commands of the Digital Demodulation TRIGger[:SEQuence]:LEVel:IQPower This command defines the trigger level of the I/Q power trigger. Prerequisites for this command ● Select I/Q power trigger (TRIGger[:SEQuence]:SOURce). Parameters: *RST: -20 Default unit: dBm Example: //Configure I/Q power trigger TRIG:SOUR IQP TRIG:LEV:IQP -10 TRIGger[:SEQuence]:SOURce This command selects the trigger source. R&S®FPC Remote Control Remote Commands of the VNA Application CALCulate:DELTamarker:AOFF ● Delta marker position: CALCulate:DELTamarker:X ● CALCulate:DELTamarker:X:RELative ● CALCulate:DELTamarker:Y? 17.16 Remote Commands of the VNA Application ● ● ● ● ● ● ● ● Measurement Configuration..................................................................................305 Amplitude.................................................................................................. R&S®FPC Remote Control Remote Commands of the VNA Application Example: //Select measurement MEAS:MODE LOSS MEASurement:FORMat This command select the measurement format, Suffix: Parameters: . irrelevant LOSS Selects the cable loss format. Available for cable loss measurements. MAGNitude Selects the return loss format. Available for reflection and DTF measurements. PHASe Select the phase format. Available for reflection measurements. SMITh Select the Smith chart format. R&S®FPC Remote Control Remote Commands of the VNA Application Parameters: Example: String containing the file name of the cable model. //Select cable model MEAS:MODE DTF CALC:DTF:CAB:PRES '5088-HLFR.CBLMOD' CALCulate:DTF:DISTance:STARt This command defines the starting point (distance) of the DTF measurement. Prerequisites for this command ● Select the DTF measurement (MEASurement:MODE). Suffix: . R&S®FPC Remote Control Remote Commands of the VNA Application CALCulate:TRANsform:DTFault:PEAK:COUNt? This command queries the number of entries in the DTF list. Prerequisites for this command ● Select the DTF measurement (MEASurement:MODE). Suffix: . R&S®FPC Remote Control Remote Commands of the VNA Application Parameters: ON | OFF | 1 | 0 *RST: Example: OFF //Activate DTF list MEAS:MODE DTF CALC:TRAN:DTF:PEAK ON CALCulate:TRANsform:DTFault:PEAK:THReshold This command defines a threshold for the DTF list. Only peaks above that threshold will appear in the DTF list. Prerequisites for this command ● Select the DTF measurement (MEASurement:MODE). Suffix: . R&S®FPC Remote Control Remote Commands of the VNA Application DISPlay:LOSS:REFerence This command defines the reference value for the cable loss measurement format. Prerequisites for this command ● Select cable loss measurement (MEASurement:MODE). ● Select cable loss format (MEASurement:FORMat). Suffix: . R&S®FPC Remote Control Remote Commands of the VNA Application Suffix: . irrelevant Parameters: *RST: 100 Default unit: dB Example: //Define display range for cable loss MEAS:MODE LOSS MEAS:FORM LOSS DISP:LOSS:Y:SCAL 50 DISPlay:MAGNitude:REFerence This command defines the reference value for the return loss measurement format. Prerequisites for this command ● Select reflection, transmission or DTF measurement (MEASurement:MODE). R&S®FPC Remote Control Remote Commands of the VNA Application Example: //Define 5th grid line as the reference position for return loss MEAS:MODE REFL MEAS:FORM MAGN DISP:MAGN:REF:POS 5 DISPlay:MAGNitude:Y:SCALe This command defines the range of the y-axis for the return loss measurement format. Prerequisites for this command ● Select reflection, transmission or DTF measurement (MEASurement:MODE). ● Select return loss format (MEASurement:FORMat). R&S®FPC Remote Control Remote Commands of the VNA Application DISPlay:PHASe:REFerence This command defines the reference value for the phase measurement format. Prerequisites for this command ● Select reflection measurement (MEASurement:MODE). ● Select phase format (MEASurement:FORMat). Suffix: . R&S®FPC Remote Control Remote Commands of the VNA Application Parameters: ON | OFF | 1 | 0 *RST: Example: OFF //Unwrap phase DISP:PHAS:UNWR ON DISPlay:PHASe:Y:SCALe This command defines the range of the y-axis for the phase measurement format. Prerequisites for this command ● Select reflection measurement (MEASurement:MODE). ● Select phase format (MEASurement:FORMat). Suffix: . R&S®FPC Remote Control Remote Commands of the VNA Application Parameters: The number you enter is rounded up to the next possible display range. For example, if you enter 5, the R&S FPC selects a display range 1...6. Range: 1.1 to 71 *RST: 1...21 Default unit: dB Example: //Define display range for SWR (1... R&S®FPC Remote Control Remote Commands of the VNA Application Example: //Define lower value of the y-axis in SWR MEAS:MODE DTF MEAS:FORM VSWR DISP:VSWR:Y:SCAL:MIN 1 17.16.3 Frequency Commands to configure the frequency described elsewhere. R&S®FPC Remote Control Remote Commands of the VNA Application Parameters: ON | OFF | 1 | 0 *RST: Example: OFF | 0 //Turn on automatic span FREQ:SPAN:AUTO ON 17.16.4 Bandwidth Commands to configure the bandwidth described elsewhere. ● Resolution bandwidth: [SENSe:]BANDwidth[:RESolution] [SENSe:]BANDwidth[:RESolution]:AUTO 17.16.5 Sweep Commands to configure the sweep described elsewhere. ● Sweep mode: INITiate:CONTinuous ● Initiate measurement: INITiate[:IMMediate] [SENSe:]SWEep:POINts.. R&S®FPC Remote Control Remote Commands of the VNA Application FORMat[:DATA] TRACe[:DATA]?............................................................................................................. 318 TRACe[:DATA]? This command queries the trace data (measurement results in graphical result displays). Return values: The number of values depends on the number of measurement points. The unit depends on the measurement and the measurement format. R&S®FPC Remote Control Remote Commands of the VNA Application ● Delta marker position: set to next peak: CALCulate:DELTamarker:MAXimum:NEXT ● Delta marker position: set to minimum: CALCulate:DELTamarker:MINimum[:PEAK] CALCulate:MARKer:MODE.................................................................................319 CALCulate:MARKer:Y?.......................................................................................319 DISPlay:IMPedance:REFerence:POSition.......... R&S®FPC Remote Control Remote Commands of the VNA Application Return values: The unit of the return value depends on the measurement mode and format you have selected. In the Smith chart, the return value also depends on the marker format you have selected with CALCulate:MARKer: MODE. R&S®FPC Remote Control Status Reporting System CALCulate:LIMit:DEFine CALCulate:LIMit:DELete CALCulate:LIMit:UNIT:X? CALCulate:LIMit:UNIT[:Y]? ● Limit checks: CALCulate:LIMit:BEEP[:STATe] CALCulate:LIMit:FAIL? CALCulate:LIMit:LOWer:SELect CALCulate:LIMit:STATe CALCulate:LIMit:UPPer:SELect ● Threshold lines: CALCulate:LIMit:LOWer:THReshold CALCulate:LIMit:UPPer:THReshold 17. R&S®FPC Remote Control Status Reporting System 17.17.1 Structure of a SCPI Status Register Each standard SCPI register contains 5 parts each of which have a width of 16 bits and have different functions. The individual bits are independent of each other, that means each hardware status is assigned a bit number that applies to all five parts. For example, bit 9 of the STATus:QUEStionable register is assigned to the power characteristics of the R&S FPC. R&S®FPC Remote Control Status Reporting System With these two edge register parts the user can define which state transition of the condition part (none, 0 to 1, 1 to 0 or both) is stored in the EVENt part. EVENt part The EVENt part indicates whether an event has occurred since the last reading, it is the "memory" of the condition part. It only indicates events passed on by the edge filters. It is permanently updated by the instrument. This part can only be read by the user. R&S®FPC Remote Control Status Reporting System 17.17. R&S®FPC Remote Control Status Reporting System ler if this is appropriately configured and can be further processed there. The SRE can be set using the command *SRE and read using the command *SRE?. Table 17-8: Meaning of the bits used in the status byte Bit number Meaning 0 to 1 Unused 2 Error Queue not empty The bit is set when an entry is made in the error queue. If this bit is enabled by the SRE, each entry of the error queue generates a service request. R&S®FPC Remote Control Status Reporting System Table 17-9: Meaning of the bits in the event status register Bit number Meaning 0 Operation Complete This bit is set on receipt of the command *OPC exactly when all previous commands have been executed. 1 Unused 2 Query Error This bit is set if either the controller wants to read data from the instrument without having sent a query, or if it does not fetch requested data and sends new instructions to the instrument instead. R&S®FPC Remote Control Status Reporting System Table 17-11: Meaning of bits in STATus:QUEStionable register Bit number Meaning 0 to 2 Unused 3 POWer This bit is set if the measured power level in any of the active channels is questionable. 4 Unused 5 FREQuency This bit is set if there is anything wrong with the frequency of the local oscillator or the reference frequency in any of the active channels. 6 to 8 Unused 9 LIMit (device-specific) This bit is set if a limit value is violated. R&S®FPC Remote Control Status Reporting System Bit number Meaning 2 to 14 Unused 15 This bit is always 0. 17.17.9 STATus:QUEStionable:POWer Register This register contains information about possible overload states. It can be read using the commands STATus:QUEStionable:POWer:CONDition? and STATus:QUEStionable:POWer[:EVENt]?. Table 17-14: Meaning of bits in STATus:QUEStionable:POWer register Bit number Meaning 0 to 1 Unused 2 IF_Overload This bit is set if the IF path is overloaded. R&S®FPC Remote Control Status Reporting System The SRQ is the only possibility for the instrument to become active on its own. Each controller program should set the instrument in a way that a service request is initiated in the case of malfunction. The program should react appropriately to the service request. Serial poll In a serial poll, just as with command *STB, the status byte of an instrument is queried. However, the query is realized via interface messages and is thus clearly faster. R&S®FPC Remote Control Status Reporting System Table 17-15: Resetting the status reporting system Event Switching on supply voltage DCL, SDC Power-On-StatusClear (Device Clear, Selected Device Clear) *RST or SYSTem:PRE Set STATus:PRESet *CLS Effect 0 1 Clear STB, ESR - yes - - - yes Clear SRE, ESE - yes - - - - Clear PPE - yes - - - - Clear EVENt parts of the registers - yes - - - yes Clear ENABle parts of all OPERation and QUEStionable registers; - yes - - yes R&S®FPC Remote Control Status Reporting System STATus:QUEStionable:FREQuency[:EVENt]?................................................................... 333 STATus:QUEStionable:LIMit[:EVENt]?..............................................................................333 STATus:QUEStionable:POWer[:EVENt]?.......................................................................... 333 STATus:QUEStionable[:EVENt]?...................................................................................... R&S®FPC Remote Control Status Reporting System Usage: Event STATus:QUEue[:NEXT]? This command returns the earliest entry of the error queue and deletes it. Positive error numbers indicate device-specific errors, negative error numbers are error messages defined by SCPI. If the error queue is empty, the error number 0, "No error", is returned. This command is identical to the command SYSTem:ERRor[:NEXT]?. R&S®FPC Remote Control Status Reporting System Parameters: (integer) Range: 0 to 65535 STATus:OPERation:PTRansition This command controls the Positive TRansition part of the OPERation register. Setting a bit causes a 0 to 1 transition in the corresponding bit of the associated register. The transition also writes a 1 into the associated bit of the corresponding EVENt register. R&S®FPC Remote Control Status Reporting System The ENABle part allows true conditions in the EVENt part of the status register to be reported in the summary bit. If a bit is 1 in the enable register and its associated event bit transitions to true, a positive transition will occur in the summary bit reported to the next higher level. R&S®FPC List of Commands List of Commands [SENSe:]ADEMod:BANDwidth:DEModulation...............................................................................................292 [SENSe:]ADEMod:BWIDth:DEModulation.....................................................................................................292 [SENSe:]ADEMod:FM:OFFSet?.................................................................................................................... 290 [SENSe:]ADEMod:MTIMe?.......................... R&S®FPC List of Commands [SENSe:]FREQuency:SPAN:FULL................................................................................................................ 240 [SENSe:]FREQuency:STARt......................................................................................................................... 240 [SENSe:]FREQuency:STOP..........................................................................................................................241 [SENSe:]SCAN:STARt.......................... R&S®FPC List of Commands CALCulate:LIMit:UNIT:X?.................................................................................................................. 277 CALCulate:LIMit:UNIT[:Y]?................................................................................................................277 CALCulate:LIMit:UPPer:SELect........................................................................................................ 278 CALCulate:LIMit:UPPer:THReshold.......... R&S®FPC List of Commands CALCulate:MARKer:FUNCtion:OBW:BANDwidth:PCT....................................................................231 CALCulate:MARKer:FUNCtion:POWer:PRESet.............................................................................. 224 CALCulate:MARKer:FUNCtion:POWer:PRESet:CHECk?............................................................... 225 CALCulate:MARKer:FUNCtion:POWer:RESult:PHZ...................................................................... R&S®FPC List of Commands DISPlay:PHASe:REFerence:POSition.....................................................................................................313 DISPlay:PHASe:UNWRap.......................................................................................................................313 DISPlay:PHASe:Y:SCALe....................................................................................................................... 314 DISPlay:VSWR:Y:SCALe............................ R&S®FPC List of Commands SOURce:TG:FREQuency.............................................................................................................................. 218 SOURce:TG:FREQuency:AUTO................................................................................................................... 218 SOURce:TG:POWer...................................................................................................................................... 219 SOURce:TG[:STATe].................... R&S®FPC List of Commands SYSTem:MEMory:FREE?.............................................................................................................................. 205 SYSTem:MEMory:TOTal?.............................................................................................................................. 205 SYSTem:MEMory:USED?..............................................................................................................................206 SYSTem:PRESet...................... R&S®FPC Index Index Symbols *OPC ............................................................................... 194 *OPC? ............................................................................. 194 *WAI ................................................................................ 194 1-port cable loss .............................................................. 165 9.91E37 Remote control ......................................................... 193 A Alpha factor ............................. R&S®FPC Event status enable register (ESE) Remote ..................................................................... 196 Event status register (ESR) Remote ..................................................................... 196 Eye diagram .................................................................... 153 F File manager ..................................................................... 42 Flash memory ................................................................... 42 FM broadcast ....... R&S®FPC Options Identification (remote) ............................................... 197 Overlapping commands .................................................. 193 Preventing ................................................................. 194 P Parameters Block data ................................................................. 190 Boolean ..................................................................... 189 Numeric values ......................................................... 188 SCPI ... R&S®FPC Index VNA ................................................................................. 163 VNA formats .................................................................... 168 Volume .............................................................................. 38 Volume (marker demodulation) ....................................... 122 W Wait Remote ..................................................................... 198 White papers ......................................................... | | |
