Agilent 34980A Multifunction Switch/Measure Unit User’s Guide Agilent Technologies
Notices © Agilent Technologies, Inc. 2004 Manual Part Number No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Agilent Technologies, Inc. as governed by United States and international copyright laws. 34980-90001 Edition First edition, November 2004 Printed in Malaysia Agilent Technologies, Inc.
Additional Safety Notices The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings or instructions elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies assumes no liability of the customer’s failure to comply with the requirements. General Do not use this products in any manner not specified by the manufacturer.
DECLARATION OF CONFORMITY According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014 Manufacturer’s Name: Manufacturer’s Address: Agilent Technologies, Incorporated th 815 – 14 St.
Contents 1 Introduction to the 34980A Front Panel at a Glance 2 Rear Panel at a Glance 3 Rear Panel Connector Pinouts 4 External Trigger Input Connector (Male D-Sub) Analog Bus Connector (Female D-Sub) 4 Annunciator Display Indicators Front Panel Menu Reference Instrument Rack Mounting 4 5 6 7 2 Features and Functions SCPI Language Conventions 10 Rules for Using a Channel List 10 General Measurement Configuration 12 Overview of Measurement Modes 12 Analog Buses 15 Measurement Functions 16 Measurem
Temperature Measurement Configuration Measurement Units 30 Thermocouple Measurements 31 RTD Measurements 33 Thermistor Measurements 34 Voltage Measurement Configuration DC Input Resistance 35 AC Low Frequency Filter 36 35 Resistance Measurement Configuration Offset Compensation 37 Current Measurement Configuration AC Low Frequency Filter 38 Frequency Measurement Configuration Low Frequency Timeout 39 Mx+B Scaling 30 37 38 39 40 Scanning 42 Rules for Scanning 42 Adding Channels to the Scan List 44 Sca
System-Related Operations 62 Firmware Revision 62 Product Firmware Updates 63 Instrument State Storage 63 Error Conditions 64 Self-Test 66 Front-Panel Display Control 66 Front-Panel Number Format 67 Real-Time System Clock 68 Relay Cycle Count 68 SCPI Language Version 69 Calibration Overview 70 Calibration Security 70 Calibration Count 72 Calibration Message 73 Remote Interface Configuration GPIB Interface 75 USB Interface 75 LAN Interface 75 Factory Reset State 74 84 Instrument Preset State 86 3 Introd
4 Low Frequency Multiplexer Switch Modules Low Frequency Multiplexer Switch Modules 96 Measurement Functions for the MUX Modules 97 SCPI Programming Examples for the MUX Modules 98 34921A 40-Channel Armature Multiplexer with Low Thermal Offset 34921A Simplified Schematic 104 34921A D-Sub Connectors 105 34921T Terminal Block 106 34922A 70-Channel Armature Multiplexer 34922A Simplified Schematic 108 34922A D-Sub Connectors 109 34922T Terminal Block 111 102 107 34923A 40/80-Channel Reed Multiplexer 112 3492
5 Matrix Switch Modules Matrix Switch Modules 138 SCPI Programming Examples for the Matrix Modules Linking Multiple Matrix Modules 142 139 34931A Dual 4x8 Armature Matrix 144 34931A Simplified Schematic 145 34931A D-Sub Connectors 146 34931T Terminal Block 147 34932A Dual 4x16 Armature Matrix 149 34932A Simplified Schematic 150 34932A D-Sub Connectors 151 34932T Terminal Block 152 34933A Dual/Quad 4x8 Reed Matrix 153 34933A Simplified Schematic for Two-Wire Mode 155 34933A D-Sub Connectors for Two-Wire Mo
8 Dual/Triple Microwave Switch Modules 34946A and 34947A Dual/Triple Microwave Switch Modules 34946A and 34947A SCPI Programming Examples 182 Installing SMA Connectors 183 34946A and 34947A Simplified Schematics 184 182 9 4-Channel Isolated D/A Converter with Waveform Memory Module 34951A 4-Channel Isolated D/A Converter with Waveform Memory Module 34951A SCPI Programming Examples 189 34951A Simplified Schematics 193 34951A D-Sub Connector Pinout 194 34951T Terminal Block 195 186 10 Multifunction Module
Agilent 34980A Multifunction Switch/Measure Unit User’s Guide 1 Introduction to the 34980A Front Panel at a Glance 2 Rear Panel at a Glance 3 Rear Panel Connector Pinouts 4 Annunciator Display Indicators 5 Front Panel Menu Reference 6 Instrument Rack Mounting 7 Agilent Technologies 1
1 Introduction to the 34980A Front Panel at a Glance 1 2 3 4 5 6 7 8 9 10 11 12 13 2 WARNING This switch is standby only. To disconnect the mains from the instrument, On/Standby switch WARNINGss remove the power cord.
1 Introduction to the 34980A Rear Panel at a Glance 1 2 3 4 5 6 7 8 9 10 11 12 Access to Analog Buses (shown with cover installed). For pinout, see page 4. Module installed in slot 1 Slot identifier Module ground screw Slot cover over slot 2 AC power connector LAN connector (10Base T/100Base Tx) USB 2.0 connector External trigger input. For pinout, see page 4. Internal DMM option mark. If you ordered the internal DMM option, the circle is marked black. IEEE 488.
1 Introduction to the 34980A Rear Panel Connector Pinouts External Trigger Input Connector (Male D-Sub) 6 1 Input Ext Trig Input (Pin 6) 5V 0V 9 5 Gnd (Pin 9) > 1 µs Analog Bus Connector (Female D-Sub) ANALOG BUSSES ABus1 HI (Pin 9) ABus2 HI (Pin 8) ABus3 HI (Pin 7) ABus4 HI (Pin 6) 4 9 5 6 1 Current I (Pin 5) ABus1 LO (Pin 4) ABus2 LO (Pin 3) ABus3 LO (Pin 2) ABus4 LO (Pin 1) 34980A User’s Guide
1 Introduction to the 34980A Annunciator Display Indicators Display Indicator LAN USB GPIB ABUS [1234] ERROR Rmt Safety Interlock Trig HOT ALARM (H1234L) Bell Symbol Mx+B 4W OC * (left side of display) 34980A User’s Guide Definition Communicating with the 34980A over LAN Communicating with the 34980A over USB Communicating with the 34980A over GPIB Analog Bus Connectivity. Normally, designated ABus connected on any module in mainframe.
1 Introduction to the 34980A Front Panel Menu Reference This section gives an overview of the top two levels of menus that you access from the front panel. The menus are designed to automatically guide you through all parameters required to configure a particular function or operation. Store/Recall Store and recall instrument states • Store up to six instrument states in non-volatile memory • Assign a name to each storage location.
1 Introduction to the 34980A View • View readings, alarms, and errors • View the scanned readings from memory • View errors in the error queue • Read the number of cycles for the displayed relay (relay maintenance feature). Advanced Available at a later firmware release Alarm Available at a later firmware release Instrument Rack Mounting Using the optional Agilent Y1130A Rack Mount Kit, you can mount the 34980A in a standard 19- inch rack cabinet.
1 8 Introduction to the 34980A 34980A User’s Guide
Agilent 34980A Multifunction Switch/Measure Unit User’s Guide 2 Features and Functions SCPI Language Conventions 10 General Measurement Configuration 12 Analog Bus and Internal DMM Considerations 28 Temperature Measurement Configuration 30 Voltage Measurement Configuration 35 Resistance Measurement Configuration 37 Current Measurement Configuration 38 Frequency Measurement Configuration 39 Mx+B Scaling 40 Scanning 42 Monitor Mode 60 System-Related Operations 62 Calibration Overview 70 Remote Interface Conf
2 Features and Functions SCPI Language Conventions Throughout this guide, the following conventions are used for SCPI command syntax for remote interface programming: • Braces ( { } ) enclose the parameter choices for a given command string. The braces are not sent with the command string. • A vertical bar ( | ) separates multiple parameter choices for a given command string. • Triangle brackets ( < > ) indicate that you must specify a value for the enclosed parameter.
Features and Functions 2 The Analog Bus relays (numbered s911, s912, s913, etc.) on the multiplexer and matrix modules are ignored if they are included in a range of channels. An error will be generated if an Analog Bus relay is specified as the first or last channel in a range of channels. For example, the following command closes all valid channels between channel 30 (slot 1) and channel 5 (slot 2). In addition, this command closes Analog Bus relay 911 on the module in slot 1 (Bank 1).
2 Features and Functions General Measurement Configuration This section contains general information to help you configure the instrument for making measurements. Since these parameters are used by several measurement functions, the discussion is combined into one common section. Refer to the later sections in this chapter for more information on parameters that are specific to each measurement function.
2 Features and Functions • To view the readings in memory, use the View key (the readings are not erased when you read them). Each time you initiate a new DMM- only scan, the instrument will clear the previous set of readings from memory. Remote Interface Operation: • You can use the MEASure? command without specifying a to quickly take a stand- alone DMM reading. Note, however, that with the MEASure? command, most measurement parameters are set to their default values.
2 Features and Functions Front Panel Operation: • To configure the measurement parameters and add a channel to the scan list, use the Channel (Configure) key. • To initiate a scan and store all readings in memory, press the Scan (Measure) key. If you press the Scan (Measure) key with no scan list defined, the instrument initiates a DMM- only measurement (see “Stand- Alone DMM Mode” below). • To stop a scan in progress, press and hold the Scan (Measure) key.
Features and Functions 2 Analog Buses The 34980A provides four 2- wire internal Analog Buses for easier signal routing. You can route your measurements directly to the internal DMM using the 34980A multiplexer and matrix modules, or you can connect to external signals via the Analog Bus connector located on the instrument’s rear panel (see connector pinout below).
2 Features and Functions Measurement Functions The following table shows which DMM measurement functions are supported by each of the multiplexer modules. Note that similar considerations must be taken into account on the 34931A, 34932A, and 34933A matrix modules. Since the matrix modules cannot be incorporated into a scan list, you must use the Stand- Alone DMM Mode for these modules.
Features and Functions 2 Measurement Range You can allow the instrument to automatically select the measurement range using autoranging or you can select a fixed range using manual ranging. Autoranging is convenient because the instrument decides which range to use for each measurement based on the input signal. For fastest scanning operation, use manual ranging on each measurement (some additional time is required for autoranging since the instrument has to make a range selection).
2 Features and Functions Measurement Resolution Resolution is expressed in number of digits the internal DMM can measure or display on the front panel. You can set the resolution to 4, 5, or 6 full digits, plus a “½” digit which can be “0” or “1”. To increase the measurement accuracy and improve noise rejection, select 6½ digits. To increase the measurement speed, select 4½ digits. • For ac voltage measurements, the resolution is fixed at 6½ digits.
Features and Functions 2 The following command selects the 1 A range with 6½ digits of resolution on channel 2041 (current measurements are allowed only on channels 41 through 44 on the 34921A). MEAS:CURR:AC? 1,1E-6,(@2041) You can also select the resolution using the SENSe commands. For example, the following command specifies a 2- wire ohms measurement with 100Ω of resolution on channel 1003.
2 Features and Functions • The following table shows the relationship between integration time, measurement resolution, number of digits, and number of bits. Relationship between integration time, resolution, digits, and bits Integration Time Resolution Digits Bits 0.02 PLC 0.2 PLC 1 PLC 2 PLC 10 PLC 20 PLC 100 PLC 200 PLC < 0.0001 x Range < 0.00001 x Range < 0.000003 x Range < 0.0000022 x Range < 0.000001 x Range < 0.0000008 x Range < 0.0000003 x Range < 0.
2 Features and Functions Autozero When autozero is enabled (default), the instrument internally disconnects the input signal following each measurement, and takes a zero reading. It then subtracts the zero reading from the preceding reading. This prevents offset voltages present on the instrument’s input circuitry from affecting measurement accuracy. When autozero is disabled, the instrument takes one zero reading and subtracts it from all subsequent measurements.
2 Features and Functions Trigger Delay In some applications, you want to allow the input to settle before taking a reading or for pacing a burst of readings. You can add a trigger delay, which adds a delay between the trigger signal and the first sample taken by the internal DMM (not used in Scanning Mode). The programmed trigger delay overrides the default trigger delay that the instrument automatically adds to the measurement.
2 Features and Functions Automatic Trigger Delays If you do not specify a trigger delay, the instrument selects a delay for you. The delay is determined by the function, range, integration time, and ac filter setting as shown below. DC Voltage, Thermocouple, DC Current (for all ranges): Integration Time Trigger Delay PLC > 1 PLC ≤ 1 2.0 ms 1.
2 Features and Functions Safety Interlock The Safety Interlock feature prevents connections to the Analog Buses if no terminal block or properly- wired cable is connected to a module (available on multiplexer and matrix modules only). Normally, if you attempt to connect to the Analog Buses without a terminal block or properly- wired cable connected, an error is generated. You can, however, temporarily disable errors generated by the Safety Interlock feature.
Features and Functions 2 User-Defined Channel Labels You can assign user- defined labels to any channel, including Analog Bus channels on the multiplexer and matrix modules. User- defined channel labels are available for identification purposes only and cannot be used in place of a channel number within a command string. • When shipped from the factory, each channel is assigned a unique factory- default label (cannot be overwritten).
2 Features and Functions Front Panel Operation: Channel (Configure) > CHANNEL LABEL To define the channel label, press the arrow keys to move the cursor to a specific position and then turn the knob to select the desired letter or number. To clear the channel label on the selected channel, change each character to “ ^ ” (starting with the rightmost character) and then press the left arrow key to move to the next character.
Features and Functions 2 2-Wire Versus 1-Wire Mode You can configure the 34923A, 34925A, and 34933A modules for 2- wire (differential) or 1- wire (single ended) measurements. If you change the module configuration, you must cycle power on the 34980A to activate the new setting. • To determine whether the module is in the 2- wire or 1- wire configuration, check the module description shown on the front panel when the module is selected, or send the SYSTem:CTYPe? or SYSTem:CDEScription? command.
2 Features and Functions Analog Bus and Internal DMM Considerations This section provides important environmental and electrical considerations that can affect mainframe operation. Environmental Operating Conditions The 34980A mainframe, including the optional internal DMM, is designed to operate in a temperature range of 0 °C to +55 °C with non- condensing humidity. The maximum humidity is 80% at 40 °C or higher. Do not use in locations where conductive dust or electrolytic salt dust may be present.
Features and Functions 2 Electrical Operating Conditions WARN IN G To avoid electric shock, turn off the 34980A and disconnect or de-energize all field wiring to the modules and the Analog Bus connector before removing any module or slot cover. Transients The Analog Buses and the optional internal DMM are designed to safely withstand occasional transient overvoltages up to 1000 Vpeak. Typically, these transient overvoltages result from switching inductive loads or from nearby lightning strikes.
2 Features and Functions Temperature Measurement Configuration This section contains information to help you configure the instrument for making temperature measurements. The table below shows the thermocouple, RTD, and thermistor types for which the instrument supports direct measurements. Temperature transducers supported Thermocouple Types * RTD Types Thermistor Types B, E, J, K, N, R, S, T R0 = 49Ω to 2.1 kΩ α = 0.00385 (DIN/IEC 751) * α = 0.00391 † 2.
2 Features and Functions Thermocouple Measurements • The instrument supports the following thermocouple types: B, E, J, K, N, R, S, and T using ITS- 90 software conversions. The default is a J- Type thermocouple. • Thermocouple measurements require a reference junction temperature. For the reference junction temperature, you can use an internal measurement on the module (34921A only), an external thermistor or RTD measurement, or a known fixed junction temperature.
2 Features and Functions Front Panel Operation: To select the thermocouple function on the active channel, choose the following items. DMM or Channel (Configure) > TEMPERATURE > PROBE TYPE > THERMOCOUPLE Then, use the knob to select the thermocouple type from the list. THERMOCOUPLE TYPE > B|E|J|K|N|R|S|T If desired, you can enable the thermocouple check feature on the active channel (opens are reported as “OPEN T/C”).
Features and Functions 2 RTD Measurements • The instrument supports RTDs with α = 0.00385 (DIN/IEC 751) using ITS- 90 software conversions or α = 0.00391 using IPTS- 68 software conversions. The default is α = 0.00385. • The resistance of an RTD is nominal at 0 °C and is referred to as R0. The instrument can measure RTDs with R0 values from 49Ω to 2.1 kΩ. • You can measure RTDs using a 2- wire or 4- wire measurement method. The 4- wire method provides the most accurate way to measure small resistances.
2 Features and Functions The following command sets the nominal resistance (R0) to 1000Ω on channel 1003. SENS:TEMP:TRAN:FRTD:RES 1000,(@1003) Thermistor Measurements The instrument supports 2.2 kΩ (YSI Series 44004), 5 kΩ (YSI Series 44007), and 10 kΩ (YSI Series 44006) thermistors. Front Panel Operation: To select the thermistor function for the active channel, choose the following items.
2 Features and Functions Voltage Measurement Configuration This section contains information to help you configure the instrument for making voltage measurements. The instrument can measure dc and true RMS ac- coupled voltages on the measurement ranges shown below. 100 mV 1V 10 V 100 V 300 V Autorange DC Input Resistance Normally, the instrument’s input resistance is fixed at 10 MΩ for all dc voltage ranges to minimize noise pickup.
2 Features and Functions AC Low Frequency Filter The instrument uses three different ac filters which enable you to either optimize low- frequency accuracy or achieve faster ac settling times. The instrument selects the slow (3 Hz), medium (20 Hz), or fast (300 Hz) filter based on the input frequency that you specify for the selected channels or the internal DMM. Applies to ac voltage and ac current measurements only.
2 Features and Functions Resistance Measurement Configuration This section contains information to help you configure the instrument for making resistance measurements. Use the 2- wire method for ease of wiring and higher density or use the 4- wire method for improved measurement accuracy. The measurement ranges shown below. 100Ω 1 kΩ 10 kΩ 100 kΩ 1 MΩ 10 MΩ 100 MΩ Autorange Offset Compensation Offset compensation removes the effects of any dc voltages in the circuit being measured.
2 Features and Functions Current Measurement Configuration This section contains information to help you configure the instrument for making current measurements on the 34921A multiplexer module. The module has four fused channels for direct dc and ac current measurements on the ranges shown below. 10 mA 100 mA 1A Autorange Current measurements are allowed only on channels 41 through 44 on the 34921A module.
2 Features and Functions Frequency Measurement Configuration This section contains information to help you configure the instrument for making frequency measurements. Low Frequency Timeout The instrument uses three different timeout ranges for frequency measurements. The instrument selects the slow (3 Hz), medium (20 Hz), or fast (300 Hz) filter based on the input frequency that you specify with this command for the selected channels. Applies to frequency measurements only.
2 Features and Functions Mx+B Scaling The scaling function allows you to apply a gain and offset to readings during a scan or while making measurements in the stand- alone DMM mode. In addition to setting the gain (“M”) and offset (“B”) values, you can also specify a custom measurement label for your scaled readings (RPM, PSI, etc.). You can apply scaling to any multiplexer channels and for any measurement function. Scaling is not allowed with any of the channels on the digital modules.
Features and Functions 2 • The CONFigure and MEASure? commands automatically set the gain (“M”) to 1 and offset (“B”) to 0. • A Factory Reset (*RST command) turns off scaling and clears the scaling values on all channels. An Instrument Preset (SYSTem:PRESet command) does not clear the scaling values and does not turn off scaling.
2 Features and Functions Scanning The instrument allows you to combine a DMM (either internal or external) with multiplexer channels to create a scan. During a scan, the instrument connects the DMM to the configured multiplexer channels one at a time and makes a measurement on each channel. Any channel that can be “read” by the instrument can also be included in a scan. This includes any combination of temperature, voltage, resistance, current, frequency, or period measurements on multiplexer channels.
Features and Functions 2 • The Analog Bus relays are automatically opened and closed as required during the scan to connect to the internal DMM for the measurement. For example, all 2- wire measurements use the ABus1 (MEAS) relays; for 4- wire measurements, the ABus2 (SENS) relays are used in addition to the ABus1 relays. • When the scan is initiated, the instrument will open all channels in banks that contain one or more channels in the scan list.
2 Features and Functions • At the end of the scan, the last channel that was scanned will be opened (as well as any Analog Bus relays used during the scan). Any channels that were opened during the scan will remain open at the completion of the scan. • If you abort a scan that is running, the instrument will terminate any reading in progress (readings are not cleared from memory).
Features and Functions 2 • To initiate a scan and store all readings in memory, press Scan (Measure). Each time you initiate a new scan, the instrument clears all previously stored readings. If you have not defined a scan list, Scan (Measure) performs an internal DMM scan independent of any channels. • To stop a scan in progress, press and hold Scan (Measure). To Build a Scan List From the Remote Interface • Use the ROUTe:SCAN command to define the list of channels in the scan list.
2 Features and Functions Scan Trigger Source You can configure the event or action that controls the onset of each sweep through the scan list (a sweep is one pass through the scan list): • You can set the instrument’s internal timer to automatically scan at a specific interval. You can also program a time delay between channels in the scan list (see “Channel Delay” on page 53). • You can manually control a scan by repeatedly pressing the Scan (Measure) key from the front panel.
2 Features and Functions • The instrument sets the scan interval to immediate (0 seconds) after a Factory Reset (*RST command). An Instrument Preset (SYSTem:PRESet command) or Card Reset (SYSTem:CPON command) does not change the setting. Front Panel Operation: Scan (Configure) > INTERVAL > SCAN INTERVAL To initiate the scan and store all readings in memory, press the Scan (Measure) key. Between scan sweeps, “WAITING FOR TRIG” will be displayed on the front panel.
2 Features and Functions Remote Interface Operation: The following program segment configures the instrument for a manual scanning operation. TRIG:SOURCE BUS TRIG:COUNT 2 INIT Select bus (manual) mode Sweep the scan list 2 times Initiate the scan Then, send the *TRG (trigger) command to begin each scan sweep. The *TRG command will not be accepted unless the internal DMM is in the “wait- for- trigger” state. Note: To stop a scan, press and hold the Scan (Measure) key.
2 Features and Functions Front Panel Operation: Scan (Configure) > INTERVAL > EXTERNAL To initiate the scan and store all readings in memory, press the Scan (Measure) key. Between scan sweeps, “WAITING FOR TRIG” will be displayed on the front panel. When a TTL pulse is received, the scan starts and readings are stored in memory. Note: To stop a scan, press and hold the Scan (Measure) key. Remote Interface Operation: The following program segment configures the instrument for an external scan.
2 Features and Functions Sweep Count The sweep count sets the number of sweeps per trigger event during a scan (a sweep is one pass through the scan list). The front- panel sample annunciator (“ *”) turns on during each measurement. Trigger Sweep 1 Sweep 2 Sweep n Trigger ... t Sweep Count (1 to 500,000 sweeps) Sweep count • The sweep count is valid only while scanning. If no channels have been assigned to the scan list, the specified sweep count is ignored (no error is generated).
2 Features and Functions Sample Count The sample count sets the number of auto- triggered samples the internal DMM will take per channel per trigger. The sample count applies to both scanning and stand- alone DMM measurements (with no scan list). The front- panel sample annunciator (“ *”) turns on during each measurement. Trigger Sample Count (1 to 500,000 samples) Trigger t Sample count for Stand-Alone DMM Mode Sweep Count Trigger Sweep 1 Sweep 2 Sweep n Trigger ...
2 Features and Functions • For scanning, the specified sample count sets the number of readings per channel (same for all channels in the scan list). If no channels have been assigned to the scan list, the sample count sets the number of readings per trigger for the internal DMM. • You can specify a sample count in conjunction with a trigger count and a sweep count.
Features and Functions 2 Channel Delay You can control the pacing of a scan sweep by inserting a delay between multiplexer channels in the scan list (useful for high- impedance or high- capacitance circuits). The delay is inserted between the relay closure and the actual measurement on the channel, in addition to any delay that will implicitly occur due to relay settling time. The programmed channel delay overrides the default channel delay that the instrument automatically adds to each channel.
2 Features and Functions • To ensure you are getting the most accurate measurements possible, use care when setting the channel delay less than the default value (automatic). The default channel delay is designed to optimize parameters, such as settling time, for the most accurate measurements. • The CONFigure and MEASure? commands set the channel delay to automatic. A Factory Reset (*RST command) also sets the channel delay to automatic.
Features and Functions 2 AC Voltage, AC Current (for all ranges): AC Filter Channel Delay Slow (3 Hz) Medium (20 Hz) Fast (200 Hz) 7.0 seconds 1.0 second 120 ms Frequency, Period: AC Filter Channel Delay Slow (3 Hz) Medium (20 Hz) Fast (200 Hz) 600 ms 300 ms 100 ms Digital Input, Totalize: Channel Delay 0 seconds Front Panel Operation: Channel (Configure) > CHANNEL DELAY > AUTO Once you have added the specified channel to the scan list, the channel delay choice will be visible in the menu.
2 Features and Functions Reading Format During a scan, the instrument automatically adds a time stamp to all readings and stores them in memory. Each reading is stored with measurement units, time stamp, channel number, and alarm status information. From the remote interface, you can specify which information you want returned with the readings (from the front panel, all of the information is available for viewing). The examples below show a reading in relative and absolute format with all fields enabled.
2 Features and Functions Remote Interface Operation: reading format. Use the following commands to select the FORMat:READing:ALARm ON FORMat:READing:CHANnel ON FORMat:READing:TIME ON FORMat:READing:TIME:TYPE {ABSolute|RELative} FORMat:READing:UNIT ON Non-Sequential Scanning By default, the instrument scans the list of channels in ascending order from slot 1 through slot 8 (channels are reordered as needed).
2 Features and Functions • The scan order setting is stored in volatile memory and the ordered mode will be enabled when power is turned off or after a Factory Reset (*RST command). Remote Interface Operation: ROUTe:SCAN:ORDered {OFF|ON} Viewing Readings Stored in Memory • During a scan, the instrument automatically adds a time stamp to all readings and stores them in memory. You can read the contents of memory at any time, even during a scan. Reading memory is not cleared when you read it.
Features and Functions Front Panel Operation: 2 View > READINGS Remote Interface Operation: The following command retrieves stored readings from memory (the readings are not erased). FETCh? Use the following commands to query the statistics on the readings stored in memory for a specific channel or from the internal DMM. These commands do not remove the data from memory.
2 Features and Functions Monitor Mode In the Monitor mode, the instrument takes readings as often as it can on a single channel or the internal DMM, even during a scan. This feature is useful for troubleshooting your system before a test or for watching an important signal. • Any channel that can be “read” by the instrument can be monitored. This includes any combination of temperature, voltage, resistance, current, frequency, or period measurements on multiplexer channels.
2 Features and Functions Front Panel Operation: DMM or Channel (Measure) For channel monitoring, turn the knob to the desired channel. To stop a Monitor, press the lighted key again. Remote Interface Operation: Use the following command to select between the channel Monitor mode (default) and the internal DMM monitor mode. ROUTe:MONitor:MODE {CHANnel|DMM} The following program segment selects the channel to be monitored (specify only one channel) and enables the Monitor function.
2 Features and Functions System-Related Operations This section gives information on system- related topics such as instrument state storage, error conditions, self- test, and front- panel display control. This information is not directly related to making measurements but is an important part of operating the instrument. Firmware Revision The mainframe, the internal DMM, and each of the plug- in modules has its own microprocessor. You can query each to determine which version of firmware is installed.
Features and Functions 2 Product Firmware Updates As new product features and enhancements become available, you can easily update your mainframe firmware to ensure optimum compatibility. The latest firmware updates are available from the Agilent 34980A product page at www.agilent.com/find/34980a (go to “Software & Firmware Downloads”). Instrument State Storage The instrument has five storage locations in non- volatile memory to store instrument states, numbered 1 through 5.
2 Features and Functions Front Panel Operation: Store/Recall > STORE|RECALL|DELETE|RENAME|AUTO To rename a location, select RENAME. Press the arrow keys to move the cursor to a specific position and then turn the knob to select the desired letter or number. To clear the name of a location, change each character to “ ^ ” (starting with the rightmost character) and then press the left arrow key to move to the next character. To automatically recall a specific location when power is restored, select AUTO.
2 Features and Functions • Errors are retrieved in first- in- first- out (FIFO) order. The first error returned is the first error that was stored. Errors are cleared as you read them. Once you have read all of the interface- specific errors, the errors in the global queue are retrieved. • Errors are cleared as you read them. When you have read all errors from the interface- specific and global error queues, the ERROR annunciator turns off and the errors are cleared.
2 Features and Functions Self-Test A power- on self- test occurs automatically when you turn on the instrument. This limited test assures you that the instrument and all installed plug- in modules are operational. This self- test does not perform the extensive self test described below. A complete self- test actually performs a series of internal tests and takes approximately 20 seconds to execute.
2 Features and Functions • You can display a message on the front panel by sending a command from the remote interface. The instrument can display up to 18 characters on the upper line of the front- panel display; any additional characters are truncated (no error is generated). You can use letters (A- Z), numbers (0- 9), and special characters like “@”, “%”, “*”, etc. Use the “#” character to display a degree symbol (°).
2 Features and Functions Real-Time System Clock During a scan, the instrument stores all readings and alarms with the current time and date (based on a 24- hour clock). • When shipped from the factory, the instrument is set to the current time and date for Greenwich Mean Time (GMT). • The clock setting is stored in non- volatile memory, and does not change when power has been off, after a Factory Reset (*RST command), or after an Instrument Preset (SYSTem:PRESet command).
Features and Functions 2 Remote Interface Operation: To read the count on either the specified internal DMM relay or module channel relays, send the following commands. DIAG:DMM:CYCLES? 2 DIAG:RELAY:CYCLES? (@1003,1013) To reset the cycle count on the specified module channel relays, send the following command (the instrument must be unsecured).
2 Features and Functions Calibration Overview This section gives a brief introduction to the calibration features of the instrument and plug- in modules. For a more detailed discussion of the calibration procedures, see the Agilent 34980A Service Guide. Calibration Security This feature allows you to enter a security code to prevent accidental or unauthorized calibrations of the instrument. The specified code is used to unsecure the mainframe and all installed modules.
Features and Functions 2 To Secure the Instrument for Calibration You can secure the instrument either from the front panel or over the remote interface. The instrument is secured when shipped from the factory. Once you enter a security code, that code must be used for both front- panel and remote operation. For example, if you secure the instrument from the front panel, you must use that same code to secure it from the remote interface.
2 Features and Functions Calibration Count You can query the instrument to determine how many calibrations have been performed on the entire mainframe, the digital modules, or the internal DMM. Note that your instrument was calibrated before it left the factory. When you receive your instrument, be sure to read the various counts to determine the initial values.
Features and Functions 2 Calibration Message The instrument allows you to store one message in calibration memory in the mainframe, a digital module, or the internal DMM. For example, you can store such information as the date when the last calibration was performed, the date when the next calibration is due, the instrument’s serial number, or even the name and phone number of the person to contact for a new calibration.
2 Features and Functions Remote Interface Configuration This section gives information on configuring the instrument for remote interface communication. For more information on the SCPI commands available to program the instrument over the remote interface, see the Programmer’s Reference Help file included on the Agilent 34980A Product Reference CD- ROM. The CD- ROM is located inside the rear cover of this manual. The Agilent 34980A supports GPIB, USB, and LAN interfaces.
Features and Functions 2 GPIB Interface Each device on the GPIB (IEEE- 488) interface must have a unique address. You can set the instrument’s address to any value between 0 and 30. The address is set to “9” when the instrument is shipped from the factory. • Your computer’s GPIB interface card has its own address. Be sure to avoid using the computer’s address for any instrument on the interface bus.
2 Features and Functions 34980A Web Browser Interface The Agilent 34980A provides a Web Interface which is built into the instrument. You can use this interface over LAN for remote access and control of the instrument via a Java®- enabled Web browser, such as Microsoft® Internet Explorer. To access and use the 34980A Web Interface: 1 Establish a LAN interface connection from your computer to the 34980A. 2 Open your computer’s Web browser.
2 Features and Functions DHCP DHCP (Dynamic Host Configuration Protocol) is a protocol for automatically assigning a dynamic IP address to a device on a network. DHCP is typically the easiest way to configure your instrument for remote communication using the LAN interface. If you change the DHCP setting, you must cycle power on the 34980A to activate the new setting. • When DHCP is enabled (factory setting), the instrument will try to obtain an IP address from a DHCP server.
2 Features and Functions • Dot- notation addresses (“nnn.nnn.nnn.nnn” where “nnn” is a byte value) must be expressed with care, as most web software on the computer will interpret byte values with leading zeros as octal numbers. For example, “255.255.020.011” is actually equivalent to decimal “255.255.16.9” not “255.255.20.11” because “.020” is interpreted as “16” expressed in octal, and “.011” as “9”. To avoid confusion, use only decimal expressions of byte values (0 to 255), with no leading zeros.
2 Features and Functions Front Panel Operation: Utility > REMOTE I/O > LAN > LAN SETTINGS > MODIFY > DHCP OFF > AUTO IP Remote Interface Operation: SYSTem:COMMunicate:LAN:AUTOip (OFF|ON} Subnet Mask The instrument uses the Subnet Mask to determine if a client IP address is on the same local subnet. When a client IP address is on a different subnet, all packets must be sent to the Default Gateway. Contact your network administrator to determine if subnetting is being used and for the correct Subnet Mask.
2 Features and Functions Front Panel Operation: Utility > REMOTE I/O > LAN > LAN SETTINGS > MODIFY > DHCP OFF > AUTO IP OFF > . . . SUBNET MASK Remote Interface Operation: SYSTem:COMMunicate:LAN:SMASk Default Gateway A Default Gateway address allows the instrument to communicate with systems that are not on the local subnet. Thus, this is the Default Gateway where packets are sent which are destined for a device not on the local subnet, as determined by the Subnet Mask setting.
2 Features and Functions Front Panel Operation: Utility > REMOTE I/O > LAN > LAN SETTINGS > MODIFY > DHCP OFF > AUTO IP OFF > . . . DEFAULT GATEWAY Remote Interface Operation: SYSTem:COMMunicate:LAN:GATEway
Host Name The Host Name is the host portion of the domain name, which is translated into an IP address. If you change the Host Name, you must cycle power on the 34980A to activate the new setting.2 Features and Functions DNS Server The Domain Name Service (DNS) is an Internet service that translates Domain names into IP addresses. Contact your network administrator to determine if DNS is being used and for the correct address. If you change the DNS address, you must cycle power on the 34980A to activate the new setting. • The default DNS Address for the 34980A is “0.0.0.0”. • Dot- notation addresses (“nnn.nnn.nnn.
Features and Functions 2 Domain Name A domain name is a registered name on the Internet, which is translated into an IP address. This feature is available from the remote interface only. If you change the Domain Name, you must cycle power on the 34980A to activate the new setting. • If Dynamic Domain Name System (DNS) is available on your network and your instrument uses DHCP, the Domain Name is registered with the Dynamic DNS service at power- on.
2 Features and Functions Factory Reset State The following tables show the state of the instrument after a *RST or SYSTem:CPON command is executed.
Features and Functions 34980A User’s Guide Module Hardware Factory Reset State Multiplexer Modules All Channels Open 2-Wire/1-Wire Mode: No Change Matrix Modules All Channels Open 2-Wire/1-Wire Mode: No Change GP Modules All Channels Open RF Modules Channels b01 and b02 Selected (b=Bank) Microwave Modules 34946A: Channels 101 and 201 to COM 34947A: Channels 101, 201, and 301 to COM System Control Modules 34951A: DACs=0 Vdc, Trace Waveforms Cleared 34952A: DIO Ports=Input, Count=0, DACs=0 Vdc
2 Features and Functions Instrument Preset State The following tables show the state of the instrument after a SYSTem:PRESet command is executed.
Features and Functions 34980A User’s Guide Module Hardware Preset State Multiplexer Modules All Channels Open 2-Wire/1-Wire Mode: No Change Matrix Modules All Channels Open 2-Wire/1-Wire Mode: No Change GP Modules All Channels Open RF Modules Channels b01 and b02 Selected (b=Bank) Microwave Modules 34946A: Channels 101 and 201 to COM 34947A: Channels 101, 201, and 301 to COM System Control Modules 34951A: DACs=0 Vdc, Trace Waveforms Cleared 34952A: DIO Ports=Input, Count=0, DACs=0 Vdc System
2 88 Features and Functions 34980A User’s Guide
Agilent 34980A Multifunction Switch/Measure Unit User’s Guide 3 Introduction to the Plug-In Modules for the 34980A Slot and Channel Addressing Scheme 90 Interconnection Solutions Overview 91 Module Considerations 92 Agilent Technologies 89
3 Introduction to the Plug-In Modules for the 34980A Slot and Channel Addressing Scheme The eight module slots in the 34980A are arranged as shown below. Slot number designations The slot and channel addressing scheme for the 34980A follows the form sccc where s is the mainframe slot number (1 through 8) and ccc is the three- digit channel number.
3 Introduction to the Plug-In Modules for the 34980A Interconnection Solutions Overview Depending upon your need, you can connect your DUT to the module using one of these interconnection solutions: • 349xxT, terminal blocks for compatible low frequency modules, offer a flexible method for connecting (300 V rated). • Y1135, Y1136, Y1137, and Y1138, standard cables for 50- pin D- sub and 78- pin D- sub connectors (300 V rated), are available.
3 Introduction to the Plug-In Modules for the 34980A Module Considerations This section lists important items and actions that can affect the operation of your modules. General Considerations N O TE To reduce wear on the internal DMM relays, wire like functions on adjacent channels. Environmental Operating Conditions These modules are designed to operate in a temperature range of 0 °C to +55 °C with non- condensing humidity. The maximum humidity is 80% at 40 °C or higher.
3 Introduction to the Plug-In Modules for the 34980A Module Pollution Degree 1 Specifications Pollution Degree 2 Specifications 34937A 28 channels, 300 V rms or DC, 1 A, 60 VA per channel 4 channels, 250 V rms or 30 VDC, 5A, 150 VA per channel 28 channels, 100 V rms or DC, 1 A, 60 VA per channel 4 channels, 100 V rms or 30 VDC, 5A, 150 VA per channel 34938A 20 channels, 250 V rms or 30 VDC, 5 A, 150 VA per channel 20 channels, 100 V rms or 30 VDC, 5 A, 150 VA per channel 34941A Four channels, 30
3 Introduction to the Plug-In Modules for the 34980A Transients The 34921A, 34922A, 34923A, 34924A, 34925A, 34931A, 34932A, 34933A, 34937A, and 34938A modules are designed to safely withstand occasional transient overvoltages up to 1000 Vpeak. Typically, these transient overvoltages result from switching inductive loads or from nearby lightning strikes. The lightning- caused transient overvoltages that may occasionally occur on mains power outlets may be as high as 2500 Vpeak.
Agilent 34980A Multifunction Switch/Measure Unit User’s Guide 4 Low Frequency Multiplexer Switch Modules Low Frequency Multiplexer Switch Modules 96 Measurement Functions for the MUX Modules 97 SCPI Programming Examples for the MUX Modules 98 34921A 40-Channel Armature Multiplexer with Low Thermal Offset 102 34921T Terminal Block 106 34922A 70-Channel Armature Multiplexer 107 34922T Terminal Block 111 34923A 40/80-Channel Reed Multiplexer 112 34923T-001 Terminal Block for Two- or Four-Wire Mode 117 34923T-
4 Low Frequency Multiplexer Switch Modules Low Frequency Multiplexer Switch Modules All low frequency multiplexer (MUX) switch modules feature two banks of channels that provide broad multiplexing and measuring capabilities. You can connect a MUX to an external instrument, and/or switch multiple analog signals to the internal DMM. With the 34921A, 34922A, 34923A, and the 34924A modules, you can close more than one channel in each bank simultaneously (N:1 configuration).
4 Low Frequency Multiplexer Switch Modules Measurement Functions for the MUX Modules The MUX modules support the DMM measurement functions as shown in the following table.
4 Low Frequency Multiplexer Switch Modules SCPI Programming Examples for the MUX Modules The programming examples below provide you with SCPI command examples to use for actions specific to the MUX modules. The slot and channel addressing scheme used in these examples follow the form sccc where s is the mainframe slot number (1 through 8) and ccc is the three- digit channel number.
4 Low Frequency Multiplexer Switch Modules Example: Closing and opening Analog Bus relays The following command connects the Analog Buses to Bank 1 (via the Analog Bus relays on Bank 1) for a module in slot 3. ROUTe:CLOSe (@3911,3912,3913,3914) ROUTe:OPEN (@3911,3912,3913,3914) The Analog Bus relays (numbered s911, s912, s913, etc.) on the MUX modules are ignored if they are included in a range of channels.
4 Low Frequency Multiplexer Switch Modules Example: Making current measurements The following command configures channel 43 for a 34921A modules in slot 7 for dc current measurements, triggers the internal DMM to scan the channel, and then sends the reading to the output buffer of the 34980A. The default settings for range (autorange) and resolution (1 PLC) are used for the measurement.
4 Low Frequency Multiplexer Switch Modules Example: Clearing the cycle count for a relay The following command resets the cycle count to zero on the channels 7 and 16 for a MUX module in slot 1. DIAGnostic:RELay:CYCLes:CLEar (@1007,1016) Example: Resetting module(s) to power-on state The following command resets a module in slot 4 to its power- on state.
4 Low Frequency Multiplexer Switch Modules 34921A 40-Channel Armature Multiplexer with Low Thermal Offset The 34921A 40- Channel Armature Multiplexer (40- Ch Arm MUX) is divided into two banks with 20 latching armature switches (channels 1- 20 and 21- 40) in each. This module also offers four additional fused relays (channels 41- 44) for making AC and DC current measurements with the internal DMM with no external shunts needed.
4 Low Frequency Multiplexer Switch Modules Low thermal offset voltage makes the 34921A ideal for low- level signal switching. The 34921T optional terminal block provides a built- in thermocouple reference junction that helps minimize errors due to thermal offset when you measure thermocouples. This module has capability to scan as many as 100 channels/second using the internal DMM.
4 Low Frequency Multiplexer Switch Modules 34921A Simplified Schematic This drawing shows two independent 20- channel 2- wire MUXes. NOTE: The three-digit number assigned to each switch represents the channel number.
4 Low Frequency Multiplexer Switch Modules 34921A D-Sub Connectors Bank 1 Bank 2 Bank 1 For orientation, the D-sub connector end of the module is facing you. *TSIL represents Temperature Sensor Interface Line. This line is used for temperature interface only. 1H 1L 2H 2L 3H 3L 1 2 3 4 5 6 TSIL* 11H 11L 18 19 GND 6H 34 WARNING WARNING:: As a safety feature, interlock 1 pins (17 and 33) on Bank 1 must be shorted to enable the Bank 1 Analog Bus relays to close.
4 Low Frequency Multiplexer Switch Modules 34921T Terminal Block This terminal block with screw- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. N O TE All modules that connect to the internal DMM are interlock protected. This means that when an installed module is exposed (no terminal block or cable is connected), the Analog Bus relays are open and disconnected from the Analog Buses.
4 Low Frequency Multiplexer Switch Modules 34922A 70-Channel Armature Multiplexer The high- density 34922A 70- Channel Armature Multiplexer (70- Ch Arm MUX) is divided into two banks with 35 latching armature switches (channels 1- 35 and 36- 70) in each. This module also contains eight armature Analog Bus relays (channels 911- 914 and 921- 924), four on each bank that can connect the bank relays to the system Analog Buses.
4 Low Frequency Multiplexer Switch Modules 34922A Simplified Schematic This drawing shows two independent 35- channel 2- wire MUXes. NOTE: The three-digit number assigned to each switch represents the channel number.
4 Low Frequency Multiplexer Switch Modules 34922A D-Sub Connectors Bank 1 Bank 1 For orientation, the D-sub connector end of the module is facing you.
4 Low Frequency Multiplexer Switch Modules Bank 2 Bank 1 Bank 2 For orientation, the D-sub connector end of the module is facing you.
4 Low Frequency Multiplexer Switch Modules 34922T Terminal Block This terminal block with solder- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. N O TE All modules that connect to the internal DMM are interlock protected. This means that when an installed module is exposed (no terminal block or cable is connected), the Analog Bus relays are open and disconnected from the Analog Buses.
4 Low Frequency Multiplexer Switch Modules 34923A 40/80-Channel Reed Multiplexer The 34923A 40/80- Channel Reed Multiplexer (40/80- Ch Reed MUX) is divided into two equal banks of non- latching reed switches. This module also contains eight armature Analog Bus relays (channels 911- 914 and 921- 924), four on each bank that can connect the bank relays to the system Analog Buses. You can connect any of the channels to the internal DMM through ABus1 and ABus2 for voltage or resistance measurements.
4 Low Frequency Multiplexer Switch Modules Four-Wire Mode This 20- channel 4- wire MUX This configuration requires neither using external wiring nor connecting through the internal Analog Buses. For 4- wire resistance measurements, the instrument automatically pairs channel n on Bank 1 with channel n +20 (Bank 2) to provide the source and sense connections.
4 Low Frequency Multiplexer Switch Modules Lifetime of relays is severely degraded as current or voltage goes up. If higher voltage is being switched, limits on source current are recommended. When the power is off, all channel and Analog Bus relays open. 34923A Simplified Schematic for Two- or Four-Wire Mode This drawing shows two independent 20- channel 2- wire MUXes. To change configuration modes, use the SYSTem:MODule:WIRE:MODE command.
4 Low Frequency Multiplexer Switch Modules NOTE: The three-digit number assigned to each switch represents the channel number. NOTE: Bank relays: Reed non-latching Analog Bus relays: Armature non-latching.
4 Low Frequency Multiplexer Switch Modules 34923A D-Sub Connectors for Two- or Four-Wire Mode Bank 1 Bank 1 For orientation, the D-sub connector end of the module is facing you. 1H 1L 2H 2L 3H 3L 1 2 3 4 5 6 Reserved 11H 11L 18 19 GND 6H 34 WARNING As a safety WARNING:: feature, interlock 1 pins (17 and 33) on Bank 1 must be shorted to enable the Bank 1 Analog Bus relays to close. The optional 34923T-001 (for 2-wire) terminal block shorts these pins for you.
4 Low Frequency Multiplexer Switch Modules 34923T-001 Terminal Block for Two- or Four-Wire Mode This terminal block with screw- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. N O TE All modules that connect to the internal DMM are interlock protected.
4 Low Frequency Multiplexer Switch Modules 34923A Simplified Schematic for One-Wire Mode This drawing shows two independent 40- channel 1- wire MUXes. To change configuration modes, use the SYSTem:MODule:WIRE:MODE command. NOTE: The three-digit number assigned to each switch represents the channel number.
4 Low Frequency Multiplexer Switch Modules 34923A D-Sub Connectors for One-Wire Mode Bank 1 Bank 1 Bank 2 For orientation, the D-sub connector end of the module is facing you.
4 Low Frequency Multiplexer Switch Modules 34923T-002 Terminal Block for One-Wire Mode This terminal block with screw- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. N O TE All modules that connect to the internal DMM are interlock protected.
4 Low Frequency Multiplexer Switch Modules 34924A 70-Channel Reed Multiplexer The high- density 34924A 70- Channel Reed Multiplexer (70- Ch Reed MUX) is divided into two banks with 35 non- latching reed switches (channels 1- 35 and 36- 70) in each. This module also contains eight armature Analog Bus relays (channels 911- 914 and 921- 924), four on each bank that can connect the bank relays to the system Analog Buses.
4 Low Frequency Multiplexer Switch Modules This module is interlock protected, which means whenever the D- sub connector end of the modules is exposed, the Analog Bus relays immediately open and disconnect from the Analog Bus. For more information, refer to page 96. Lifetime of relays is severely degraded as current or voltage goes up. If higher voltage is being switched, limits on source current are recommended. When the power is off, all channel and Analog Bus relays open.
4 Low Frequency Multiplexer Switch Modules 34924A Simplified Schematic This drawing shows two independent 35- channel 2- wire MUXes. NOTE: The three-digit number assigned to each switch represents the channel number.
4 Low Frequency Multiplexer Switch Modules 34924A D-Connectors Bank 1 Bank 1 For orientation, the D-sub connector end of the module is facing you.
4 Low Frequency Multiplexer Switch Modules Bank 2 Bank 2 Bank 1 For orientation, the D-sub connector end of the module is facing you.
4 Low Frequency Multiplexer Switch Modules 34924T Terminal Block This terminal block with solder- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. N O TE All modules that connect to the internal DMM are interlock protected. This means that when an installed module is exposed (no terminal block or cable is connected), the Analog Bus relays are open and disconnected from the Analog Buses.
4 Low Frequency Multiplexer Switch Modules 34925A 40/80-Channel Optically-Isolated FET Multiplexer The 34925A 40/80- Channel Optically- Isolated FET Multiplexer (40/80- Ch FET MUX) module is a high- speed and high- density FET MUX for high throughput production test. This module is divided into two equal banks of non- latching FET switches. This module also contains four armature Analog Bus relays.
4 Low Frequency Multiplexer Switch Modules Four-Wire • one 20- channel 4- wire MUX. This configuration requires using neither external wiring nor connecting through the internal Analog Buses. For 4- wire resistance measurements, the instrument automatically pairs channel n on Bank 1 with channel n+20 (Bank 2) to provide the source and sense connections.
4 Low Frequency Multiplexer Switch Modules • using the *RST command. This command resets the mainframe and all installed modules to the Factory configuration. This affects all installed modules. • cycling system power. This affects all installed modules. If the overvoltage situation is not resolved, clearing the overvoltage will result in a new overvoltage event occurring immediately. Further FET protection is assured only as one channel in each bank is closed at any time.
4 Low Frequency Multiplexer Switch Modules 34925A Simplified Schematic for Two- or Four-Wire Mode This drawing shows two independent 20- channel 2- wire MUXes. To change configuration modes, use the SYSTem:MODule:WIRE:MODE command. Bank 1 NOTE: The three-digit number assigned to each switch represents the channel number.
4 Low Frequency Multiplexer Switch Modules 34925A D-Sub Connectors for Two- or Four-Wire Mode Bank 1 Bank 2 Bank 1 For orientation, the D-sub connector end of the module is facing you. 1H 1L 2H 2L 3H 3L 1 2 3 4 5 6 Reserved 11H 11L 18 19 GND 6H 34 WARNING WARNING: As a safety feature, interlock 1 pins (17 and 33) on Bank 1 must be shorted to enable the Bank 1 Analog Bus relays to close. The optional 34925T-001 (for 2-wire) terminal block shorts these pins for you.
4 Low Frequency Multiplexer Switch Modules 34925T-001 Terminal Block for Two- or Four-Wire Mode This terminal block with screw- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. N O TE All modules that connect to the internal DMM are interlock protected.
4 Low Frequency Multiplexer Switch Modules 34925A Simplified Schematic for One-Wire Mode This drawing shows two independent 40- channel, 1- wire MUXes. To change configuration modes, use the SYSTem:MODule:WIRE:MODE command. NOTE: The three-digit number assigned to each switch represents the channel number.
4 Low Frequency Multiplexer Switch Modules 34925A D-Sub Connectors for One-Wired Mode Bank 1 Bank 1 For orientation, the D-sub connector end of the module is facing you. 1 2 3 4 5 6 1 2 3 4 5 6 Reserved 18 WARNING As a safety WARNING:: feature, interlock 1 pins (17 and 33) on Bank 1 must be shorted to enable the Bank 1 Analog Bus relays to close. The optional 34925T-002 (for 1-wire) terminal block shorts these pins for you.
4 Low Frequency Multiplexer Switch Modules 34925T-002 Terminal Block for One-Wire Mode This terminal block with screw- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. N O TE All modules that connect to the internal DMM are interlock protected.
4 136 Low Frequency Multiplexer Switch Modules 34980A User’s Guide
Agilent 34980A Multifunction Switch/Measure Unit User’s Guide 5 Matrix Switch Modules Matrix Switch Modules 138 SCPI Programming Examples for the Matrix Modules 139 Linking Multiple Matrix Modules 142 34931A Dual 4x8 Armature Matrix 144 34931T Terminal Block 147 34932A Dual 4x16 Armature Matrix 149 34932T Terminal Block 152 34933A Dual/Quad 4x8 Reed Matrix 153 34933T-001 Terminal Block for Two-Wire Mode 157 34933T-002 Terminal Block for One-Wire Mode 161 Agilent Technologies 137
5 Matrix Switch Modules Matrix Switch Modules The matrix switch modules for the 34980A offer a convenient way for you to connect multiple instruments to multiple points on your DUT. For a lower cost and better specification alternative, you can connect both matrix and multiplexer (MUX) modules. Although flexible, it is possible to connect more than one source at the same time with a matrix. Make sure that dangerous or unwanted conditions are not created by these connections.
5 Matrix Switch Modules SCPI Programming Examples for the Matrix Modules The programming examples below provide you with SCPI command examples to use for actions specific to the matrix switch modules. The slot and channel addressing scheme used in these examples follow the general form sccc where s is the mainframe slot number (1 through 8) and ccc is the three- digit channel number.
5 Matrix Switch Modules Opening and Closing Channels Example: Closing and opening matrix channels (34931A, 34932A, and 34933A in two-wire mode) The following commands close and open channels 311 and 312 through 315 of a 34932A matrix module in 2- wire mode. This module is in slot 3. The channel number represents the matrix crosspoint of a row (one digit) and a column (two digits). For example, channel 311 represents crosspoint at row 3 and column 11 on a 34932A module.
5 Matrix Switch Modules Example: Querying channels for open or close state The following command returns a 1 (true) or 0 (false) state of channel 204 for a module in slot 3. ROUTe:CLOSe (@3204) ROUTe:CLOSe? (@3204) !Returns a 1 ROUTe:OPEN? (@3204) !Returns a 0 Configuring a Module Example: Configuring the 34933A module for 2-wire or 1-wire mode The following command configures a matrix module in slot 4 for 1- wire measurements.
5 Matrix Switch Modules Linking Multiple Matrix Modules You can link multiple matrix modules to form a larger matrix. The following two drawings show two- module connections through rows and columns. Wiring Multiple 34931A or 34932A Modules With a 34931A you can combine two matrices to form 8x8 (connecting columns) or 4x16 (connecting rows) configurations. Using two 34932A matrices on a 34932A module, you can create 16x8 (connecting columns) or 4x32 (connecting rows) configurations.
5 Matrix Switch Modules Module 1 Increase number of rows by connecting through columns 1 2 3 4 1 2 n-1 3 n* 8 Rows 8 or 16 Columns 1 2 n-1 3 n* 1 2 3 4 Module 2 *n can be 8 or 16 Increase number of columns by connecting through rows 16 or 32 Columns 1 2 n-1 3 n* 1 Module 1 2 n-1 3 n* Module 2 1 2 3 1 Analog Buses 4 2 3 4 *n can be 8 or 16 4 Rows 34980A User’s Guide 143
5 Matrix Switch Modules 34931A Dual 4x8 Armature Matrix The 34931A dual 4x8 armature matrix contains two matrices, each with 32 2- wire crosspoint latching armature relays organized in a 4- row by 8- column configuration. Every row and column are made up of two wires each, a high (H) and a low (L). Each crosspoint relay has a unique channel number representing the row and column that intersects to create the crosspoint.
5 Matrix Switch Modules 34931A Simplified Schematic Matrix 1 Col 1 H Row 1 L Col 2 H L Col 3 H L Col 4 Col 5 H H L Col. 6 L H L Col 7 Col 8 H H L L L H Row 2 L H Row 3 L H Row 4 L H L H L NOTE: Three-digit channel numbers are derived from the intersection of the rows and columns, columns having two digits.
5 Matrix Switch Modules 34931A D-Sub Connectors Matrix 1 Matrix 1 C4H C4L NC 1 2 3 R4H NC 4 5 For orientation, the D-sub connector end of the module is facing you.
5 Matrix Switch Modules 34931T Terminal Block This terminal block with screw- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. N O TE All modules that connect to the internal DMM are interlock protected. This means that when an installed module is exposed (no terminal block or cable is connected), the Analog Bus relays, which are on Matrix 2, are open and disconnected from the Analog Buses.
5 Matrix Switch Modules N O TE On the 34931T terminal block, only two sets of screw terminals are for use with the 34931A module. See the following drawing. When using the 34931T terminal block, be sure to wire your connections to the two sets of screw terminals closest to the 50-pin D-sub connectors. Although columns are numbered the same on the two matrices, they are electrically separate (example C8).
5 Matrix Switch Modules 34932A Dual 4x16 Armature Matrix The 34932A dual 4x16 armature matrix contains two matrices, each with 64 2- wire crosspoint latching armature relays organized in a 4- row by 16- column configuration. Every row and column are made up of two wires each, a high (H) and a low (L). Each crosspoint relay has a unique channel number representing the row and column that intersect to create the crosspoint.
5 Matrix Switch Modules 34932A Simplified Schematic Matrix 1 Row 1 Col 1 Col 2 Col 3 Col 4 H H H H L L L L Col 15 H L Col 16 H L L H Row 2 Row 3 L H L NOTE: Three-digit channel numbers are derived from the intersection of the rows and columns, columns having two digits. The intersection shown here represents Channel 315 (Row 3, Column 15).
5 Matrix Switch Modules 34932A D-Sub Connectors Matrix 1 Matrix 1 C4H 1 2 3 4 5 6 C11H C11L C9H NC 18 19 NC C3H 34 35 C3L C1H 36 22 8 38 9 NC 10 11 C2L C14H C14L R2H 24 23 C1L R3H 37 C5L C13H C13L 7 C9L C2H 21 20 For orientation, the D-sub connector end of the module is facing you.
5 Matrix Switch Modules 34932T Terminal Block This terminal block with screw- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. N O TE All modules that connect to the internal DMM are interlock protected. This means that when an installed module is exposed (no terminal block or cable is connected), the Analog Bus relays, which are on Matrix 2, are open and disconnected from the Analog Buses.
5 Matrix Switch Modules 34933A Dual/Quad 4x8 Reed Matrix Using program commands or the front panel of the 34980A, you can configure the 34933A dual/quad 4x8 reed matrix module for differential (2- wire) mode or single- ended (1- wire) mode. The 34933A module contains 100 Ω in- rush resistors that are used to protect the reed relays from reactive loads.
5 Matrix Switch Modules One-Wire Mode To physically configure the module in 1- wire mode, use the 34933T- 002 terminal block, or a compatible standard or custom cable. If using a standard or custom cable, make sure you connect interlock pins 17 and 33 on the Matrix 2 D- sub connector. Refer to the pinout drawing and table on page 160.
5 Matrix Switch Modules 34933A Simplified Schematic for Two-Wire Mode NOTE: Matrix relays: Reed non-latching Analog Bus relays: Armature non-latching Matrix 1 Col 1H C1H Col 1L C1L C1H bypass C1L bypass H L Col 2H Col 2L Col 8H C2L C2H C2H bypass C2L bypass H Col 8L NOTE: Although columns are numbered the same on the two matrices, they are electrically separate.
5 Matrix Switch Modules 34933A D-Sub Connectors for Two-Wire Mode Matrix 1 Matrix 2 For orientation, the D-sub connector end of the module is facing you.
5 Matrix Switch Modules 34933T-001 Terminal Block for Two-Wire Mode This terminal block with screw- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. N O TE All modules that connect to the internal DMM are interlock protected.
5 Matrix Switch Modules Although columns are numbered the same on the two matrices, they are electrically separate. COLUMN When using the 34933T terminal block for 2- wire mode, access is provided to the bypass columns through the columns labeled C9 through C16. Follow this wiring convention shown in the table below for both matrices. Terminal marked... 158 Connects to... Terminal marked... Connects to...
5 Matrix Switch Modules 34933A Simplified Schematic for One-Wire Mode NOTE: Although rows are numbered the same across the matrices, they are electrically separate.
5 Matrix Switch Modules 34933A D-Sub Connectors for One-Wire Mode Matrices 1 & 2 Matrices 1 and 2 1C4 2C4 1 2 1C4 2C4 bypass bypass 3 4 For orientation, the D-sub connector end of the module is facing you.
5 Matrix Switch Modules 34933T-002 Terminal Block for One-Wire Mode This terminal block with screw- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. N O TE All modules that connect to the internal DMM are interlock protected.
5 162 Matrix Switch Modules 34980A User’s Guide
Agilent 34980A Multifunction Switch/Measure Unit User’s Guide 6 General Purpose Switch Modules General Purpose Switch Modules 164 34937A and 34938A SCPI Programming Examples 166 34937A 32-Channel GP Switch 168 34937T Terminal Block 170 34938A 20-Channel High-Current GP Switch 171 34938T Terminal Block 173 Agilent Technologies 163
6 General Purpose Switch Modules General Purpose Switch Modules Use the general- purpose (GP) switch modules in your 34980A mainframe to route signals or control other system devices. • The 34937A 32- Channel Form C and Form A GP Switch Module provides independent control of 32 latching relays: • Twenty- eight Form C relays rated for 1 A at 60 W per channel • Four Form A relays rated for 5 A at 150 W per channel.
6 General Purpose Switch Modules After a five- to ten- second delay, remove the sheet metal cover from the module and move the position of the jumper mounted on the module. See the next drawing for the jumper’s location on the module. WARN IN G Do not connect either the 34937A or 34938A module directly to a mains power outlet.
6 General Purpose Switch Modules 34937A and 34938A SCPI Programming Examples The programming examples below provide you with SCPI command examples to use for actions specific to the general purpose switch modules. The slot and channel addressing scheme used in these examples follow the form sccc where s is the mainframe slot number (1 through 8) and ccc is the channel number.
6 General Purpose Switch Modules Reading Cycle Count and Resetting Modules to Power-On State Example: Reading the cycle count for a relay (all switch modules) The following command returns the relay cycle count on channel 7 and channel 16 for a module in slot 1. DIAGnostic:RELay:CYCLes? (@1007,1016) Example: Clearing the cycle count for a relay (all switch modules) The following command resets the relay cycle count on channels 7 and 16 for a module in slot 1.
6 General Purpose Switch Modules 34937A 32-Channel GP Switch The 34937A general- purpose switch module provides independent control of: • Twenty- eight Form C (DPST) latching relays rated at 1 A • Four Form A (SPST) latching relays rated at 5 A. You can set the power- failure state for these 5 A relays. See page 164 and page 165. N O TE A temperature sensor on these modules triggers system interrupts when high-carry current-induced heat on the modules reaches a threshold of 70 oC.
6 General Purpose Switch Modules 34937A D-Sub Connectors Bank 1 Bank 1 For orientation, the D-sub connector end of the module is facing you.
6 General Purpose Switch Modules 34937T Terminal Block This terminal block with screw- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. The 34980A Product Reference CD (shipped with the instrument) contains a the 34937T Wiring Log for you to document your wiring configuration for this module. You can open the wiring log file in Microsoft® Excel® or Adobe® Acrobat® format.
6 General Purpose Switch Modules 34938A 20-Channel High-Current GP Switch The 34938A high- channel GP switch module provides twenty 5 A Form A relays for general purpose switching needs. You can set the power- failure state for these 5 A relays. See page 164 and page 165. N O TE A temperature sensor on these modules triggers system interrupts when high-carry current-induced heat on the modules reaches a threshold of 70 oC.
6 General Purpose Switch Modules 34938A D-Sub Connectors Bank 1 Bank 1 Bank 2 For orientation, the D-sub connector end of the module is facing you.
6 General Purpose Switch Modules 34938T Terminal Block This terminal block with screw- type connections is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. The 34980A Product Reference CD (shipped with the instrument) contains a the 34938T Wiring Log for you to document your wiring configuration for this module. You can open the wiring log file in Microsoft® Excel® or Adobe® Acrobat® format.
6 174 General Purpose Switch Modules 34980A User’s Guide
Agilent 34980A Multifunction Switch/Measure Unit User’s Guide 7 RF Multiplexer Switch Modules 34941A and 34942A RF Multiplexer Switch Modules 176 Installing SMA Connectors 177 Isolating Connector Banks 177 34941A and 34942A SCPI Programming Examples 178 34941A and 34942A Simplified Schematic 179 Agilent Technologies 175
7 RF Multiplexer Switch Modules 34941A and 34942A RF Multiplexer Switch Modules The 34941A and 34942A Quad 1x4 RF MUX switch modules provide high density RF signal switching with four independent 1x4 multiplexer banks in each module. The important differences between the two RF MUX modules lie in their characteristic impedance and their use of connectors. The 34941A, the 50- Ω version, uses SMA connectors. The 34942A, the 75- Ω variation, uses Mini SMB connectors.
7 RF Multiplexer Switch Modules Installing SMA Connectors When installing SMA connectors on the 34941A module, it is recommend that you tighten them to 0.8 - 1.1 Nm (7- 10 in- lbs) of torque. CAU T ION SMA connectors are easily damaged, especially when tightening a neighboring connector with a wrench. To help prevent damage and contamination, do not remove a connector's protective cap until immediately prior to installing a cable on that connector.
7 RF Multiplexer Switch Modules 34941A and 34942A SCPI Programming Examples The programming examples below provide you with SCPI command examples to use for actions specific to the RF MUX switch modules. The slot and channel addressing scheme used in these examples follow the form sccc where s is the mainframe slot number (1 through 8) and ccc is the channel number. For information on specific configurations, refer to the simplified schematic on page 179.
7 RF Multiplexer Switch Modules Example: Clearing the cycle count for a relay The following command resets the cycle count on the channels 103 and 201 for a module in slot 1. DIAGnostic:RELay:CYCLes:CLEar (@1103,1201) Example: Resetting module to power-on state The following command resets a module in slot 4 to its power- on state. SYSTem:CPON 4 34941A and 34942A Simplified Schematic Both the 34941A and 34942A modules are configured alike. They each contain four banks of latching switches.
7 180 RF Multiplexer Switch Modules 34980A User’s Guide
Agilent 34980A Multifunction Switch/Measure Unit User’s Guide 8 Dual/Triple Microwave Switch Modules 34946A and 34947A Dual/Triple Microwave Switch Modules 182 Installing SMA Connectors 183 34946A and 34947A SCPI Programming Examples 182 34946A and 34947A Simplified Schematics 184 Agilent Technologies 181
8 Dual/Triple Microwave Switch Modules 34946A and 34947A Dual/Triple Microwave Switch Modules The 34946A and 34947A modules offer single- pole, double- throw switches in either 4- GHz or 20- GHz options. The 34946A and 34947A modules do not connect to the analog buses. Instead, all connections are made through the visible SMA connectors via external cables.
8 Dual/Triple Microwave Switch Modules Example: Querying the system for module identify The following command returns the identify of the module installed in slot 7. SYSTem:CTYPe? 7 Example: Reading the cycle count for a relay The following command reads back the number of completed cycles for the channel 201 relay of a module installed in slot 6.
8 Dual/Triple Microwave Switch Modules 34946A and 34947A Simplified Schematics The following drawings show the channel configuration for the 34946A and 34947A modules, respectively.
Agilent 34980A Multifunction Switch/Measure Unit User’s Guide 9 4-Channel Isolated D/A Converter with Waveform Memory Module 34951A 4-Channel Isolated D/A Converter with Waveform Memory Module 186 34951A SCPI Programming Examples 189 34951A Simplified Schematics 193 34951A D-Sub Connector Pinout 194 34951T Terminal Block 195 Agilent Technologies 185
9 4-Channel Isolated D/A Converter with Waveform Memory Module 34951A 4-Channel Isolated D/A Converter with Waveform Memory Module The 34951A 4- Ch Isolated D/A module (DAC module) has four independent, isolated DAC channels that output DC voltage up to ±16V or DC current up to ±20 mA. Since the DACs are electrically isolated, you can stack or combine multiple DACs to have up to ±64 V on a module. You can control each channel manually, or use the onboard memory to store multiple sequenced points.
9 4-Channel Isolated D/A Converter with Waveform Memory Module The on- board memory provides storage for you to create up to 32 voltage or current waveforms. You can apply a different waveform to each channel to output. Or you can apply the same waveform to more than one channel. For each channel you can designate the gain, frequency, and/or offset for its output. The waveforms are stored in volatile memory.
9 4-Channel Isolated D/A Converter with Waveform Memory Module N O TE The line between external Trigger Out and external Trigger In is shared. You can use the external Trigger Out to provide the external Trigger In signal. However, both a user-supplied external trigger and the 34951A Trigger Out cannot drive the line at the same time. Auto- Calibration The 34951A features auto- calibration (auto- cal). Upon receipt of the CALibration:MODule? command, you can adjust all four channels of the DAC module.
9 4-Channel Isolated D/A Converter with Waveform Memory Module 34951A SCPI Programming Examples The programming examples below provide you with SCPI command examples to use for actions specific to the DAC module. The slot and channel addressing scheme used in these examples follow the form sccc where s is the mainframe slot number (1 through 8) and ccc is the three- digit channel number. Valid channels for this module are 1- 4.
9 4-Channel Isolated D/A Converter with Waveform Memory Module Example: Downloading trace points to memory and outputting waveform from DACs The following command segment downloads seven trace points to memory on the module in slot 4 and output the waveform from DAC channels 1 and 2. The trace name is "NEG_RAMP". TRACe:DATA 4,NEG_RAMP, 1, .67, .33, 0, -.33, -.
9 4-Channel Isolated D/A Converter with Waveform Memory Module External Trigger Example: Selecting the external trigger source and issuing trigger source The following command segment enables the trigger output mode on a DAC module installed in slot 4, then enables the external trigger source on DAC channels 1 and 2. The last command issues an external trigger pulse from the module.
9 4-Channel Isolated D/A Converter with Waveform Memory Module Configuring a DAC Module Example: Querying the system for module identify (all modules) The following command returns the identify of the module installed in slot 7. SYSTem:CTYPe? 7 Example: Resetting the module(s) to power-on state The following command resets a module in slot 4 to its power- on state. SYST:CPON 4 N O TE 192 Using this command will erase any downloaded waveforms.
9 4-Channel Isolated D/A Converter with Waveform Memory Module 34951A Simplified Schematics The following schematic shows how the module is generally configured.
9 4-Channel Isolated D/A Converter with Waveform Memory Module The following diagram shows individual DAC channel configuration. All channels are configured the same. Each DAC is configured as shown in this drawing.
9 4-Channel Isolated D/A Converter with Waveform Memory Module 34951T Terminal Block Each terminal block is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. The 34980A Product Reference CD (shipped with the instrument) contains a the 34951T Wiring Log for you to document your wiring configuration for this module. You can open the wiring log file in Microsoft® Excel® or Adobe® Acrobat® format.
9 196 4-Channel Isolated D/A Converter with Waveform Memory Module 34980A User’s Guide
Agilent 34980A Multifunction Switch/Measure Unit User’s Guide 10 Multifunction Module with DIO, D/A, and Totalizer 34952A Multifunction Module 198 34952A SCPI Programming Examples 199 34952A Simplified Schematic 201 34952 D-Sub Connector 202 34952T Terminal Block 203 Agilent Technologies 197
10 Multifunction Module with DIO, D/A, and Totalizer 34952A Multifunction Module The 34952A Multifunction Module with DIO, D/A, and Totalizer combines four 8- bit ports of digital input/output, a 100 kHz totalizer, and two ±12 volt earth- referenced analog outputs. You can include digital inputs and totalizer input in a scan list. You can make connections via standard 50- pin D- sub cables or the optional 34952T terminal block.
10 Multifunction Module with DIO, D/A, and Totalizer 34952A SCPI Programming Examples The programming examples below provide you with SCPI command examples to use for actions specific to the general purpose switch modules. The slot and channel addressing scheme used in these examples follow the form sccc where s is the mainframe slot number (1 through 8) and ccc is the channel number. For information on specific configurations, refer to the simplified schematic on page 201.
10 Multifunction Module with DIO, D/A, and Totalizer The following command configures totalizer channel 5 on the Multifunction module in slot 2 to be reset to "0" after it is read (RRESet means “read and reset”). CONFigure:TOTalize RRES,(@2005) Example: Configuring the totalizer for count This command configures the totalizer to count on the rising edge (positive) or falling edge (negative) of the input signal.
Multifunction Module with DIO, D/A, and Totalizer 10 34952A Simplified Schematic Internal to the 34952A Module User-Supplied Connections Bit 0 8 Channel 001 Bit 7 Bit 8 8 Channel 002 DIO Bit 15 Bit 16 8 Channel 003 Bit 23 Bit 24 8 Channel 004 Bit 31 Count + 32 Bits Count - Totalizer Gate Channel 005 Gate 16 Bits D/A1 DAC 1H DAC 1L Channel 006 16 Bits D/A2 DAC 2H DAC 2L 34980A User’s Guide Channel 007 201
10 Multifunction Module with DIO, D/A, and Totalizer 34952 D-Sub Connector BIT 0 CNT - CNT + GND 1 2 GND 3 202 19 DAC 2L GND 34 35 Bit 0 Bit 1 Bit 2 Bit 3 Channel 1 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8 Bit 9 Bit 10 Bit 11 Channel 2 Bit 12 Bit 13 Bit 14 Bit 15 4 GND 5 GATE GATE 18 Description BIT 1 20 BIT 2 BIT 3 7 8 6 BIT 12 BIT 13 BIT 14 21 22 23 BIT 4 BIT 5 9 BIT 6 10 BIT 7 11 GND BIT 8 13 14 12 GND BIT 15 BIT 16 BIT 17 BIT 18 BIT 19 24 25 26 27 28 29 BIT 9
Multifunction Module with DIO, D/A, and Totalizer 10 34952T Terminal Block Each terminal block is labeled with the model number and the abbreviated module name. In addition, space is available on the label for you to write the slot number. The 34980A Product Reference CD (shipped with the instrument) contains a the 34952T Wiring Log for you to document your wiring configuration for this module. You can open the wiring log file in Microsoft® Excel® or Adobe® Acrobat® format.
