Keysight 33210A 10 MHz Function/Arbitrary Waveform Generator Service Guide
Keysight 33210A at a Glance The Keysight Technologies 33210A is a 10 MHz synthesized function generator with built-in arbitrary waveform and pulse capabilities. Its combination of bench-top and system features makes this function generator a versatile solution for your testing requirements now and in the future.
The Front Panel at a Glance 1 2 3 4 5 6 7 8 Graph Mode/ Local Key On/Off Switch Modulation/Sweep/Burst Keys State Storage Menu Key Utility Menu Key Help Menu Key Menu Operation Softkeys Waveform Selection Keys 9 Manual Trigger Key (used for Sweep and Burst only) 10 Output Enable/Disable Key 11 Knob 12 Cursor Keys 13 Sync Connector 14 Output Connector Note: To get context-sensitive help on any front-panel key or menu softkey, press and hold down that key.
The Front-Panel Display at a Glance Menu Mode Mode Information Trigger Information Units Output Status Display Icon Numeric Readout Softkey Labels Graph Mode To enter or exit the Graph Mode, press the Parameter Name key. Parameter Value Signal Ground In Graph Mode, only one parameter label is displayed for each key at one time.
Front-Panel Number Entry You can enter numbers from the front-panel using one of two methods. Use the knob and cursor keys to modify the displayed number. 1. Use the keys below the knob to move the cursor left or right. 2. Rotate the knob to change a digit (clockwise to increase). Use the keypad to enter numbers and the softkeys to select units. 1. Key in a value as you would on a typical calculator. 2. Select a unit to enter the value.
The Rear Panel at a Glance 1 External 10 MHz Reference Input Terminal (Option 001 only). 2 Internal 10 MHz Reference Output Terminal (Option 001 only). 3 External Modulation Input Terminal 4 Input: External Trigger/Burst Gate Output: Trigger Output 5 6 7 8 USB Interface Connector LAN Interface Connector GPIB Interface Connector Chassis Ground Use the menu to: • Select the GPIB address (see chapter 3). • Set the network parameters for the LAN interface (see chapter 3).
In This Book Specifications Chapter 1 lists the function generator’s specifications. Quick Start Chapter 2 prepares the function generator for use and helps you get familiar with a few of its front-panel features. Front-Panel Menu Operation Chapter 3 introduces you to the frontpanel menu and describes some of the function generator’s menu features. Calibration Procedures Chapter 4 provides calibration, verification, and adjustment procedures for the function generator.
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Chapter 1 Specifications Chapter 2 Quick Start 11 17 To Prepare the Function Generator for Use 19 To Adjust the Carrying Handle 20 To Set the Output Frequency 21 To Set the Output Amplitude 22 To Set a DC Offset Voltage 24 To Set the High-Level and Low-Level Values 25 To Select “DC Volts” 26 To Set the Duty Cycle of a Square Wave 27 To Configure a Pulse Waveform 28 To View a Waveform Graph 29 To Output a Stored Arbitrary Waveform 30 To Use the Built-In Help System 31 To Rack Mount the Function Generator
Contents +10 dB Range Flatness Verification 67 +20 dB Range Flatness Verification 69 Calibration Security 71 Calibration Message 73 Calibration Count 73 General Calibration/Adjustment Procedure 74 Aborting a Calibration in Progress 75 Sequence of Adjustments 75 Self-Test 76 Frequency (Internal Timebase) Adjustment 77 Internal ADC Adjustment/Self Calibration 78 Output Impedance Adjustment 79 AC Amplitude (high-impedance) Adjustment 81 Low Frequency Flatness Adjustment 84 0 dB Range Flatness Adjustments 85 +
1 1 Specifications
Chapter 1 Specifications Keysight 33210A Function / Arbitrary Waveform Generator 1 Waveforms Square Frequency: Standard: Sine, Square, Ramp, Triangle, Pulse, Noise, DC Built-in Arbitrary (Option 002[1]): Exponential rise, Exponential fall, Negative ramp, Sin(x)/x, Cardiac.
Chapter 1 Specifications Keysight 33210A Function / Arbitrary Waveform Generator Common Characteristics Frequency Accuracy[6]: 90 days: 1 year: Resolution: ± (10 ppm + 3 pHz) ± (20 ppm + 3 pHz) Phase Offset: Range: Resolution: Accuracy: +360 to -360 degrees 0.
Chapter 1 Specifications Keysight 33210A Function / Arbitrary Waveform Generator 1 Sweep Programming Times (typical) Waveforms: Type: Direction: Sweep Time: Trigger Source: Sine, Square, Ramp Linear or Logarithmic Up or Down 1 ms to 500 s Single, External, or Internal Falling edge of Sync signal (programmable frequency) Marker Burst [7] Sine, Square, Ramp Counted (1 to 50,000 cycles), Infinite, Gated +360 to -360 degrees 1 µs to 500 s External Trigger Single, External, or Internal Waveforms: Type: St
Chapter 1 Specifications Keysight 33210A Function / Arbitrary Waveform Generator General Power Supply: Power Consumption: Operating Environment: Operating Temperature: Operating Humidity: Operating Altitude: Storage Temperature: CAT II 100 to 240 V @ 50/60 Hz (-5%, +10%) 100 to 120 V @ 400 Hz (± 10%) 50 VA maximum IEC 61010 Pollution Degree 2 Indoor Location 0 °C to 55 °C 5% to 80% RH, non-condensing Up to 3000 meters -30 °C to 70 °C Note: Specifications are subject to change without notice.
1 Chapter 1 Specifications Keysight 33210A Function / Arbitrary Waveform Generator Product Dimensions All dimensions are shown in millimeters.
2 2 Quick Start
Quick Start One of the first things you will want to do with your function generator is to become acquainted with the front panel. We have written the exercises in this chapter to prepare the instrument for use and help you get familiar with some of its front-panel operations.
Chapter 2 Quick Start To Prepare the Function Generator for Use To Prepare the Function Generator for Use 1 Check the list of supplied items. 2 Verify that you have received the following items with your instrument. If anything is missing, please contact your nearest Keysight Sales Office. • Power cord (for country of destination). 4 • Certificate of Calibration. • Keysight 33210A Product Reference CD (product software, programming examples, and manuals).
Chapter 2 Quick Start To Adjust the Carrying Handle To Adjust the Carrying Handle 2 To adjust the position, grasp the handle by the sides and pull outward. Then, rotate the handle to the desired position.
Chapter 2 Quick Start To Set the Output Frequency To Set the Output Frequency At power-on, the function generator outputs a sine wave at 1 kHz with an amplitude of 100 mV peak-to-peak (into a 50Ω termination). The following steps show you how to change the frequency to 1.2 MHz. 1 Press the “Freq” softkey. 4 The displayed frequency is either the power-on value or the frequency previously selected. When you change functions, the same frequency is used if the present value is valid for the new function.
Chapter 2 Quick Start To Set the Output Amplitude To Set the Output Amplitude 2 At power-on, the function generator outputs a sine wave with an amplitude of 100 mV peak-to-peak (into a 50Ω termination). The following steps show you how to change the amplitude to 50 mVrms. 1 Press the “Ampl” softkey. The displayed amplitude is either the power-on value or the amplitude previously selected. When you change functions, the same amplitude is used if the present value is valid for the new function.
Chapter 2 Quick Start To Set the Output Amplitude You can easily convert the displayed amplitude from one unit to another. For example, the following steps show you how to convert the amplitude from Vrms to Vpp. 2 4 Enter the numeric entry mode. Press the key to enter the numeric entry mode. 4 5 Select the new units. Press the softkey that corresponds to the desired units. The displayed value is converted to the new units.
Chapter 2 Quick Start To Set a DC Offset Voltage To Set a DC Offset Voltage 2 At power-on, the function generator outputs a sine wave with a dc offset of 0 volts (into a 50Ω termination). The following steps show you how to change the offset to –1.5 mVdc. 1 Press the “Offset” softkey. The displayed offset voltage is either the power-on value or the offset previously selected. When you change functions, the same offset is used if the present value is valid for the new function.
Chapter 2 Quick Start To Set the High-Level and Low-Level Values To Set the High-Level and Low-Level Values You can specify a signal by setting its amplitude and dc offset values, as described previously. Another way to set the limits of a signal is to specify its high-level (maximum) and low-level (minimum) values. This is typically convenient for digital applications. In the following example, let's set the high-level to 1.0 V and the low-level to 0.0 V. 4 1 Press the "Ampl" softkey to select "Ampl".
Chapter 2 Quick Start To Select “DC Volts” To Select “DC Volts” 2 You can select the "DC Volts" feature from the “Utility” menu, and then set a constant dc voltage as an "Offset" value. Let's set "DC Volts" = 1.0 Vdc. 1 Press and then select the DC On softkey. The Offset value becomes selected. 2 Enter the desired voltage level as an "Offset". Enter 1.0 Vdc with the numeric keypad or knob. You can enter any dc voltage from -5 Vdc to +5 Vdc.
Chapter 2 Quick Start To Set the Duty Cycle of a Square Wave To Set the Duty Cycle of a Square Wave At power-on, the duty cycle for square waves is 50%. You can adjust the duty cycle from 20% to 80% for output frequencies up to 5 MHz. The following steps show you how to change the duty cycle to 30%. 1 Select the square wave function. 4 Press the key and then set the desired output frequency to any value up to 5 MHz. 2 Press the “Duty Cycle” softkey.
Chapter 2 Quick Start To Configure a Pulse Waveform To Configure a Pulse Waveform 2 You can configure the function generator to output a pulse waveform with variable pulse width and edge time. The following steps show you how to configure a 500 ms pulse waveform with a pulse width of 10 ms and edge times of 50 ns. 1 Select the pulse function. Press the key to select the pulse function and output a pulse waveform with the default parameters. 2 Set the pulse period.
Chapter 2 Quick Start To View a Waveform Graph To View a Waveform Graph In the Graph Mode, you can view a graphical representation of the current waveform parameters. The softkeys are listed in the same order as in the normal display mode, and they perform the same functions. However, only one label (for example, Freq or Period) is displayed for each softkey at one time. 4 1 Enable the Graph Mode. Press the key to enable the Graph Mode.
Chapter 2 Quick Start To Output a Stored Arbitrary Waveform To Output a Stored Arbitrary Waveform 2 Note: Arbitrary waveforms are optionally available with the 33210A (Option 002). To upgrade your 33210A to include arbitrary waveform functionality, go to www.keysight.com/find/33210A. There are five built-in arbitrary waveforms stored in non-volatile memory. The following steps show you how to output the built-in “exponential fall” waveform from the front panel.
Chapter 2 Quick Start To Use the Built-In Help System To Use the Built-In Help System The built-in help system is designed to provide context-sensitive assistance on any front-panel key or menu softkey. A list of help topics is also available to assist you with several front-panel operations. 2 4 1 View the help information for a function key. Press and hold down the key.
Chapter 2 Quick Start To Use the Built-In Help System 3 View the list of help topics. 2 Press the key to view the list of available help topics. To scroll through the list, press the ↑ or ↓ softkey or rotate the knob. Select the third topic “Get HELP on any key” and then press SELECT. Press DONE to exit Help. 4 View the help information for displayed messages. Whenever a limit is exceeded or any other invalid configuration is found, the function generator will display a message.
Chapter 2 Quick Start To Rack Mount the Function Generator To Rack Mount the Function Generator You can mount the Keysight 33210A in a standard 19-inch rack cabinet using one of two optional kits available. Instructions and mounting hardware are included with each rack-mounting kit. Any Keysight System II instrument of the same size can be rack-mounted beside the Keysight 33210A. 4 Note: Remove the carrying handle, and the front and rear rubber bumpers, before rack-mounting the instrument.
Chapter 2 Quick Start To Rack Mount the Function Generator 2 To rack mount a single instrument, order adapter kit 5063-9240. To rack mount two instruments side-by-side, order lock-link kit 5061-8769 and flange kit 5063-9212. Be sure to use the support rails in the rack cabinet. In order to prevent overheating, do not block the flow of air into or out of the instrument. Be sure to allow enough clearance at the rear, sides, and bottom of the instrument to permit adequate internal air flow.
3 3 Front-Panel Menu Operation
Front-Panel Menu Operation This chapter introduces you to the front-panel keys and menu operation. This chapter does not give a detailed description of every front-panel key or menu operation. It does, however, give you an overview of the frontpanel menus and many front-panel operations. Refer to the Keysight 33210A User’s Guide for a complete discussion of the function generator’s capabilities and operation.
Chapter 3 Front-Panel Menu Operation Front-Panel Menu Reference Front-Panel Menu Reference This section gives an overview of the front-panel menus. The remainder of this chapter contains examples of using the front-panel menus. Configure the modulation parameters for AM, FM, and PWM. • • • • • Select the modulation type. Select an internal or external modulation source. Specify AM modulation depth, modulating frequency, and modulation shape.
Chapter 3 Front-Panel Menu Operation Front-Panel Menu Reference Store and recall instrument states. • • • • • Store up to four instrument states in non-volatile memory. Assign a custom name to each storage location. Recall stored instrument states. Restore all instrument settings to their factory default values. Select the instrument’s power-on configuration (last or factory default). 3 Configure system-related parameters. • • • • • • • • • • • • • • • Generate a dc-only voltage level.
Chapter 3 Front-Panel Menu Operation To Select the Output Termination To Select the Output Termination The Keysight 33210A has a fixed series output impedance of 50 ohms to the front-panel Output connector. If the actual load impedance is different than the value specified, the displayed amplitude and offset levels will be incorrect. The load impedance setting is simply provided as a convenience to ensure that the displayed voltage matches the expected load. 1 Press 4 3 .
Chapter 3 Front-Panel Menu Operation To Read the Calibration Information To Read the Calibration Information You can access the instrument’s calibration memory to read the calibration count and calibration message. 3 Calibration Count You can query the instrument to determine how many calibrations have been performed. Note that your instrument was calibrated before it left the factory. When you receive your instrument, read the count to determine its initial value.
Chapter 3 Front-Panel Menu Operation To Unsecure and Secure for Calibration To Unsecure and Secure for Calibration This feature allows you to enter a security code to prevent accidental or unauthorized adjustments of the instrument. When you first receive your instrument, it is secured. Before you can adjust the instrument, you must unsecure it by entering the correct security code. • The security code is set to AT33210A when the instrument is shipped 4 from the factory.
Chapter 3 Front-Panel Menu Operation To Unsecure and Secure for Calibration To Unsecure for Calibration 1 Select the Secure Code interface. Press and then select the Test/Cal softkey. 3 2 Enter the Secure Code. Use the knob to change the displayed character. and Use the arrow keys to move to the next character When the last character of the secure code is entered, the instrument will be unsecured. 3 Exit the menu. Press the DONE softkey.
Chapter 3 Front-Panel Menu Operation To Unsecure and Secure for Calibration To Secure After Calibration 1 Select the Secure Code interface. Press and then select the Test/Cal softkey. 4 3 2 Enter a Secure Code. Enter up to 12 alphanumeric characters. The first character must be a letter. Use the knob to change the displayed character. Use the arrow keys to move to the next character. Use the knob to change the displayed character.
Chapter 3 Front-Panel Menu Operation To Store the Instrument State To Store the Instrument State You can store the instrument state in one of four non-volatile storage locations. A fifth storage location automatically holds the power-down configuration of the instrument. When power is restored, the instrument can automatically return to its state before power-down. 3 1 Select the desired storage location. Press and then select the Store State softkey. 2 Select a custom name for the selected location.
Chapter 3 Front-Panel Menu Operation To Configure the Remote Interface To Configure the Remote Interface The Keysight 33210A supports remote interface communication using a choice of three interfaces: GPIB, USB, and LAN (LXI Class C compliant). All three interfaces are "live" at power up. The following sections tell how to configure the remote interface from the instrument front panel.
Chapter 3 Front-Panel Menu Operation To Configure the Remote Interface LAN Configuration There are several parameters that you may need to set to establish network communication using the LAN interface. Primarily, you will need to establish an IP address. You may need to contact your network administrator for help in establishing communication with the LAN interface. 1 Select the “I/O” menu. 3 Press and then press the I/O softkey. 2 Select the “LAN” menu. Press the LAN softkey.
Chapter 3 Front-Panel Menu Operation To Configure the Remote Interface 3 Establish an “IP Setup.” To use the Keysight 33210A on the network, you must first establish an IP setup, including an IP address, and possibly a subnet mask and gateway address. Press the IP Setup softkey. By default, both DHCP and Auto IP are set to On.
Chapter 3 Front-Panel Menu Operation To Configure the Remote Interface b. Set the “Subnet Mask.” The subnet mask is required if your network has been divided into subnets. Ask your network administrator whether a subnet mask is needed, and for the correct mask. Press the Subnet Mask softkey and enter the subnet mask in the IP address format (using the keypad). 3 c. Set the “Default Gateway.” The gateway address is the address of a gateway, which is a device that connects two networks.
Chapter 3 Front-Panel Menu Operation To Configure the Remote Interface include letters, numbers, and dashes (“-”). You can use the keypad for the numeric characters only. Press to delete all characters to the right of the cursor position. b. Set the “Domain Name.” Press the Domain Name softkey and enter the domain name. The domain name is translated into an IP address. The domain name is entered as a string using the knob and cursor keys to select and change characters.
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4 4 Calibration Procedures
Calibration Procedures This chapter contains procedures for verification of the instrument's performance and adjustment (calibration).
Chapter 4 Calibration Procedures Keysight Technologies Calibration Services Closed-Case Electronic Calibration The instrument features closed-case electronic calibration. No internal mechanical adjustments are required. The instrument calculates correction factors based upon the input reference value you set. The new correction factors are stored in nonvolatile memory until the next calibration adjustment is performed.
Chapter 4 Calibration Procedures Time Required for Calibration Time Required for Calibration The Keysight 33210A can be automatically calibrated under computer control. With computer control you can perform the complete calibration procedure and performance verification tests in approximately 30 minutes once the instrument is warmed-up (see “Test Considerations” on page 57). Manual adjustments and verifications, using the recommended test equipment, will take approximately 2 hours.
Chapter 4 Calibration Procedures Automating Calibration Procedures Automating Calibration Procedures You can automate the complete verification and adjustment procedures outlined in this chapter if you have access to programmable test equipment. You can program the instrument configurations specified for each test over the remote interface. You can then enter read-back verification data into a test program and compare the results to the 4 appropriate test limit values.
Chapter 4 Calibration Procedures Recommended Test Equipment Recommended Test Equipment The test equipment recommended for the performance verification and adjustment procedures is listed below. If the exact instrument is not available, substitute calibration standards of equivalent accuracy. Instrument Requirements Recommended Model Use* Digital Multimeter (DMM) ac volts, true rms, ac coupled accuracy: ±0.
Chapter 4 Calibration Procedures Test Considerations Test Considerations For optimum performance, all procedures should comply with the following recommendations: • Assure that the calibration ambient temperature is stable and between 21 °C and 25 °C (23 °C ±2 °C). • Assure ambient relative humidity is less than 80%. 4 • Allow a 1-hour warm-up period before verification or adjustment. • Keep the measurement cables as short as possible, consistent with the impedance requirements.
Chapter 4 Calibration Procedures Performance Verification Tests Performance Verification Tests Use the Performance Verification Tests to verify the measurement performance of the instrument. The performance verification tests use the instrument’s specifications listed in the “Specifications” chapter beginning on page 11. You can perform three different levels of performance verification tests: • Self-Test A series of internal verification tests that give high confidence that the instrument is operational.
Chapter 4 Calibration Procedures Performance Verification Tests Quick Performance Check The quick performance check is a combination of internal self-test and an abbreviated performance test (specified by the letter Q in the performance verification tests). This test provides a simple method to achieve high confidence in the instrument's ability to functionally operate and meet specifications. These tests represent the absolute minimum set of performance checks recommended following any service activity.
Chapter 4 Calibration Procedures Performance Verification Tests Special Note: Amplitude and Flatness Verification Procedures Measurements made during the AC Amplitude (high-impedance) Verification procedure (see page 63) are used as reference measurements in the flatness verification procedures (beginning on page 64). Additional reference measurements and calculated references are used in the flatness verification procedures.
Chapter 4 Calibration Procedures Performance Verification Tests Amplitude and Flatness Verification Worksheet 1. Enter the following measurements (from procedure on page 63). 1kHz_0dB_reference = __________________________ Vrms 1kHz_10dB_reference = __________________________ Vrms 1kHz_20dB_reference = __________________________ Vrms 2. Calculate the dBm value of the rms voltages. 1kHz_0dB_reference_dBm = 10 * log(5.
Chapter 4 Calibration Procedures Internal Timebase Verification Internal Timebase Verification This test verifies the output frequency accuracy of the instrument. All output frequencies are derived from a single generated frequency. 1 Connect a frequency counter as shown below (the frequency counter input should be terminated at 50 Ω). 4 2 Set the instrument to the output described in the table below and measure the output frequency. Be sure the instrument output is enabled.
Chapter 4 Calibration Procedures AC Amplitude (high-impedance) Verification AC Amplitude (high-impedance) Verification This procedure checks the ac amplitude output accuracy at a frequency of 1 kHz, and establishes reference measurements for the higher frequency flatness verification procedures. 1 Set the DMM to measure Vrms Volts. Connect the DMM as shown below. 4 2 Set the instrument to each output described in the table below and measure the output voltage with the DMM.
Chapter 4 Calibration Procedures Low Frequency Flatness Verification Low Frequency Flatness Verification This procedure checks the AC amplitude flatness at 100 kHz using the reference measurements recorded in the Amplitude and Flatness Verification Worksheet. These measurements also establish an error value used to set the power meter reference. The transfer measurements are made at a frequency of 100 kHz using both the DMM and the power meter. 1 Set the DMM to measure ac Volts.
Chapter 4 Calibration Procedures 0 dB Range Flatness Verification 0 dB Range Flatness Verification This procedure checks the high frequency ac amplitude flatness above 100 kHz on the 0dB attenuator range. (Flatness is relative to 1 kHz.) 1 Connect the power meter to measure the output amplitude of the instrument as shown below. 4 4 2 Set up the function generator as follows: • Output impedance: 50 Ω (press and select Output Setup). • Waveform: Sine • Frequency: 100 kHz • Amplitude: 3.
Chapter 4 Calibration Procedures 0 dB Range Flatness Verification 5 Set the function generator to each output described in the table below and measure the output amplitude with the power meter (the relative measurement in dB). Keysight 33210A Output Setup Q 4 Q Q Measurement Function Amplitude Frequency Nominal Error 50 Ω Sine Wave +3.51 dBm 100.000 kHz 0 dB ± 0.1 dB 50 Ω Sine Wave +3.51 dBm 200.000 kHz 0 dB ± 0.2 dB 50 Ω Sine Wave +3.51 dBm 500.000 kHz 0 dB ± 0.
Chapter 4 Calibration Procedures +10 dB Range Flatness Verification +10 dB Range Flatness Verification This procedure checks the high frequency ac amplitude flatness above 100 kHz on the +10dB attenuator range. (Flatness is relative to 1 kHz.) 1 Connect the power meter to measure the output amplitude of the instrument as shown on page 65. 2 Set up the function generator as follows: • Output impedance: 50 Ω (press 4 and select Output Setup). • Waveform: Sine • Frequency: 100 kHz • Amplitude: 13.
Chapter 4 Calibration Procedures +10 dB Range Flatness Verification 5 Set the instrument to each output described in the table below and measure the output amplitude with the power meter (the relative measurement in dB). Keysight 33210A Output Setup Q 4 Q Q Measurement Function Amplitude Frequency Nominal Error 50 Ω Sine Wave +13.00 dBm 100.000 kHz 0 dB ± 0.1 dB 50 Ω Sine Wave +13.00 dBm 200.000 kHz 0 dB ± 0.2 dB 50 Ω Sine Wave +13.00 dBm 500.000 kHz 0 dB ± 0.
Chapter 4 Calibration Procedures +20 dB Range Flatness Verification +20 dB Range Flatness Verification This procedure checks the high frequency ac amplitude flatness above 100 kHz on the +20dB attenuator range. (Flatness is relative to 1 kHz.) 1 Connect the power meter to measure the output voltage of the instrument as shown below. 4 4 Caution Most power meters will require an attenuator or special power head to measure the +20 dB output.
Chapter 4 Calibration Procedures +20 dB Range Flatness Verification 4 Set the power meter offset to equal the 100kHz_20dB_offset value previously calculated. This sets the power meter to directly read the flatness error specification relative to 1 kHz. 100kHz_20dB_offset is calculated on the Amplitude and Flatness Verification Worksheet. 5 Set the instrument to each output described in the table below and measure the output amplitude with the power meter.
Chapter 4 Calibration Procedures Calibration Security Calibration Security This feature allows you to enter a security code to prevent accidental or unauthorized adjustments of the instrument. When you first receive your instrument, it is secured. Before you can adjust the instrument, you must unsecure it by entering the correct security code. See “To Unsecure and Secure for Calibration”, on page 41 for a procedure 4 to enter the security code from the front panel.
Chapter 4 Calibration Procedures Calibration Security 3 Apply a temporary short between the two exposed metal pads on the A1 assembly. The general location is shown in the figure below. On the PC board, the pads are marked CAL ENABLE. U101 U102 Pads 4 4 Apply power and turn on the instrument. WARNING Be careful not to touch the power line connections or high voltages on the power supply module. Power is present even if the instrument is turned off.
Chapter 4 Calibration Procedures Calibration Message Calibration Message The instrument allows you to store one message in calibration memory. For example, you can store 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. You can record a calibration message only from the remote interface and only when the instrument is unsecured.
Chapter 4 Calibration Procedures General Calibration/Adjustment Procedure General Calibration/Adjustment Procedure The following procedure is the recommended method to complete an instrument calibration. This procedure is an overview of the steps required for a complete calibration. Additional details for each step in this procedure are given in the appropriate sections of this chapter. 1 Read “Test Considerations” on page 57. 2 Unsecure the instrument for calibration (see page 71).
Chapter 4 Calibration Procedures Aborting a Calibration in Progress Aborting a Calibration in Progress Sometimes it may be necessary to abort a calibration after the procedure has already been initiated. You can abort a calibration at any time by turning off the power. When performing a calibration from the remote interface, you can abort a calibration by issuing a remote interface device clear message followed by a *RST. The instrument stores calibration constants at the end of each adjustment procedure.
Chapter 4 Calibration Procedures Self-Test Self-Test Self-Test is performed as the first step to ensure the instrument is in working order before beginning any additional adjustments. Note Be sure to follow the requirements listed in “Test Considerations” on page 57 before beginning any adjustments. 1 Press on the front panel. Select Perform Cal on the “Test / Cal” menu. Enter setup number “1” and select BEGIN. Setup 4 1 Performs the Self-test. The Main Output is disabled during test.
Chapter 4 Calibration Procedures Frequency (Internal Timebase) Adjustment Frequency (Internal Timebase) Adjustment The function generator stores a calibration constant that sets the VCXO to output exactly 10 MHz. 1 Set the frequency counter resolution to better than 0.1 ppm and the input termination to 50 Ω (if your frequency counter does not have a 50 Ω input termination, you must provide an external termination). Make the 4 connections shown below.
Chapter 4 Calibration Procedures Internal ADC Adjustment/Self Calibration Internal ADC Adjustment/Self Calibration The function generator stores calibration constants related to the gain and offset of the internal ADC. Setup 6 must always be performed before any later adjustments are attempted. The internal ADC is then used as a source for the calibration constants generated in setup 7. 1 Make the connections as shown below. Modulation In 4 2 Set the DMM to display 5 1/2 digits.
Chapter 4 Calibration Procedures Output Impedance Adjustment 6 Enter and begin the following setup. Setup 7* Self-calibration. The output is disabled. * Constants are stored after completing this setup. 7 There are no specific operational verification tests for setups 6 and 7 since the constants generated affect almost all behavior of the instrument. Continue with the next adjustment procedure in this chapter.
Chapter 4 Calibration Procedures Output Impedance Adjustment 2 Use the DMM to make a resistance measurement at the front panel Output connector for each setup in the following table. The expected measured value is approximately 50 Ω. Setup 8* -30dB range 9* -20dB range 10* -10dB range 11* 0dB range 12* +10dB range * Constants are stored after completing this setup. 4 3 Using the numeric keypad or knob, adjust the displayed impedance at each setup to match the measured impedance.
Chapter 4 Calibration Procedures AC Amplitude (high-impedance) Adjustment AC Amplitude (high-impedance) Adjustment The function generator stores a calibration constant for each highimpedance attenuator path. The gain coefficient of each path is calculated using two measurements; one with the waveform DAC at + output and one with waveform DAC at – output. The setups, therefore, must be performed in pairs. 4 1 Connect the DMM as shown below.
Chapter 4 Calibration Procedures AC Amplitude (high-impedance) Adjustment 2 Use the DMM to measure the dc voltage at the front-panel Output connector for each setup in the following table. Nominal Signal 4 Setup DC level 13 +0.015 V Output of -30dB range 14* -0.015 V Output of -30dB range 15 +0.05 V Output of -20dB range 16* -0.05 V Output of -20dB range 17 +0.15 V Output of -10dB range 18* -0.15 V Output of -10dB range 19 +0.50 V Output of 0dB range 20* -0.
Chapter 4 Calibration Procedures AC Amplitude (high-impedance) Adjustment 3 Using the numeric keypad or knob, adjust the displayed voltage at each setup to match the measured voltage. Select ENTER VALUE. (Entered values are rounded to the nearest 100 µV). 4 After performing setup 28: a. If your calibration procedures require you to verify the adjustment just made, exit the calibration menu and perform “AC Amplitude (high-impedance) Verification”, on page 63. b.
Chapter 4 Calibration Procedures Low Frequency Flatness Adjustment Low Frequency Flatness Adjustment The Low Frequency Flatness adjustment calculates the flatness response of 3 attenuator paths with the Elliptical filter and 2 attenuator paths with the Linear Phase filter. 1 Set the DMM to measure Vrms. Make the connections shown on page 81. 2 Use the DMM to measure the output voltage for each of the setups in the table below. Nominal Signal 4 Setup Frequency Amplitude 29* 1 kHz 0.
Chapter 4 Calibration Procedures 0 dB Range Flatness Adjustments 0 dB Range Flatness Adjustments 1 Connect the power meter as shown on page 87. 2 Use the power meter to measure the output amplitude for each of the setups in the table below. Setup 39 establishes the power meter reference for all the remaining 4 setups in this table. You must always perform setup 39 before any of the following setups. Note Nominal Signal Setup Frequency Amplitude 39* 100 kHz 0.
Chapter 4 Calibration Procedures 0 dB Range Flatness Adjustments Note Setups 52 and 53 (previous page) are not used in this instrument. From the front panel, press the Enter softkey to advance the setup from 52 to 53. No number entry is required. 3 Using the numeric keypad, adjust the displayed amplitude at each setup to match the measured amplitude (in dBm). Then select ENTER VALUE. Note In order to get dBm you must use the numeric keypad (not the knob) to enter the number, and then select “dBm”.
Chapter 4 Calibration Procedures +10 dB Range Flatness Adjustments +10 dB Range Flatness Adjustments Note The Linear Phase path is not adjusted. It is approximated using the other path’s values. 1 Connect the power meter as shown below. 4 4 2 Use a power meter to measure the output amplitude for each of the setups in the table on the next page. Note Setup 54 establishes the power meter reference for all the remaining setups in this table.
Chapter 4 Calibration Procedures +10 dB Range Flatness Adjustments Nominal Signal 4 Setup Frequency Amplitude 54* 100 kHz 0.9 Vrms 12 dBm Flatness for 10 dB, Elliptical Filter 55* 200 kHz 0.9 Vrms 12 dBm Flatness for 10 dB, Elliptical Filter 56* 500 kHz 0.9 Vrms 12 dBm Flatness for 10 dB, Elliptical Filter 57* 1.5 MHz 0.9 Vrms 12 dBm Flatness for 10 dB, Elliptical Filter 58* 3.0 MHz 0.9 Vrms 12 dBm Flatness for 10 dB, Elliptical Filter 59 4.0 MHz 0.
Chapter 4 Calibration Procedures +20 dB Range Flatness Adjustment +20 dB Range Flatness Adjustment Caution Most power meters will require an attenuator (–20 dB) or special power head to measure the +20 dB output. Be sure to correct the measurements for the specifications of the attenuator you use. For example, if the nominal attenuator value is –20 dB at the specified frequency, you must add 20 dB to the power meter reading before entering the value.
Chapter 4 Calibration Procedures +20 dB Range Flatness Adjustment Nominal Signal 4 Setup Frequency Amplitude 63* 100 kHz 2.8 Vrms 22 dBm Flatness for 20 dB, Elliptical Filter 64* 200 kHz 2.8 Vrms 22 dBm Flatness for 20 dB, Elliptical Filter 65* 500 kHz 2.8 Vrms 22 dBm Flatness for 20 dB, Elliptical Filter 66* 1.5 MHz 2.8 Vrms 22 dBm Flatness for 20 dB, Elliptical Filter 67* 3.0 MHz 2.8 Vrms 22 dBm Flatness for 20 dB, Elliptical Filter 68* 4.0 MHz 2.
Chapter 4 Calibration Procedures +20 dB Range Flatness Adjustment 3 Using the numeric keypad, adjust the displayed amplitude at each setup to match the measured amplitude (in dBm). Then select ENTER VALUE. Note In order to get dBm you must use the numeric keypad (not the knob) to enter the number, and then select “dBm”. 4 After performing setup 75: a.
Chapter 4 Calibration Procedures Calibration Errors Calibration Errors The following errors are failures that may occur during a calibration. System error messages are described in the Keysight 33210A User’s Guide.
Chapter 4 Calibration Procedures Calibration Errors 850 Calibration error; set up is invalid You have selected an invalid calibration setup number with the CAL:SET command. 851 Calibration error; set up is out of order Certain calibration steps require a specific beginning and ending sequence. You may not enter into the middle of a sequence of calibration steps.
Chapter 4 Calibration Procedures Calibration Errors 4 94
5 5 Block Diagram
Block Diagram This chapter provides a high-level overview of the instrument's functional block diagram. For more information on servicing the instrument, see Chapter 6, “Disassembly and Repair.
Chapter 5 Block Diagram Block Diagram Block Diagram The function generator’s circuits may be divided into three main categories: power supplies, analog circuits, and digital circuits. The instrument is further divided into floating and earth referenced circuitry. This discussion refers to the block diagram on page 100. 4 The Main Processor combines many instrument functions onto one custom IC. It interfaces directly with the GPIB and LAN interfaces, and through a controller chip with the USB interface.
The 14–bit waveform DAC is loaded with data from the Synthesis IC. The output is then fed through one of two filters before being buffered and sent to the Main Output Circuitry. The two filters are: • A 9th order elliptical filter with a cutoff frequency of 23.5 MHz. This filter includes sin (x)/x correction. This filter is used for continuous sine and squarewaves. • A 7th order linear phase filter with a cutoff frequency of 12.5 MHz. This filter is used for ramp, noise, and arbitrary waveforms.
Chapter 5 Block Diagram Block Diagram 4 5 99
Chapter 5 Block Diagram Power Supplies Power Supplies The line input voltage is filtered and applied to the main power supply. The main power supply provides all power to the instrument. Secondary power supplies are contained on the main circuit board. The secondary power supplies include both isolated and earth-referenced supplies. +12V Line Filter 110-240 Vac PWR_ON Main Supply Isolated Power Supplies +15V +5V +3.3V_ISO +1.
6 6 Disassembly and Repair
Service This chapter discusses the procedures involved for returning a failed instrument to Keysight Technologies for service or repair.
Chapter 6 Disassembly and Repair Operating Checklist Operating Checklist Before returning your instrument to Keysight Technologies for service or repair, check the following items: Is the instrument inoperative? • Verify that the ac power cord is connected to the instrument. 4 • Verify that the front-panel On/Standby switch has been pushed. Is the display working? • If the display appears blank, but front-panel keys are lit (and the fan is working), the display screen saver may be enabled.
Chapter 6 Disassembly and Repair Types of Service Available Types of Service Available If your instrument fails during the warranty period, Keysight Technologies will repair or replace it under the terms of your warranty. After your warranty expires, Keysight offers repair services at competitive prices. Extended Service Contracts Many Keysight products are available with optional service contracts that extend the covered period after the standard warranty expires.
Chapter 6 Disassembly and Repair Repackaging for Shipment Repackaging for Shipment If the unit is to be shipped to Keysight for service or repair, be sure to: • Attach a tag to the unit identifying the owner and indicating the required service or repair. Include the model number and full serial number. • Place the unit in its original container with appropriate packaging material for shipping. 4 • Secure the container with strong tape or metal bands.
Chapter 6 Disassembly and Repair Electrostatic Discharge (ESD) Precautions Electrostatic Discharge (ESD) Precautions Almost all electrical components can be damaged by electrostatic discharge (ESD) during handling. Component damage can occur at electrostatic discharge voltages as low as 50 volts. The following guidelines will help prevent ESD damage when servicing the instrument or any electronic device. • Disassemble instruments only in a static-free work area.
Chapter 6 Disassembly and Repair Troubleshooting Hints Troubleshooting Hints This section provides a brief check list of common failures. Before troubleshooting or repairing the instrument, make sure the failure is in the instrument rather than any external connections. Also make sure that the instrument is accurately calibrated within the last year (see “Calibration Interval”, on page 53). The instrument’s circuits allow troubleshooting and repair with basic equipment such as a 6½ digit 4 multimeter.
Chapter 6 Disassembly and Repair Troubleshooting Hints Power Supply Verify the main power supply. WARNING Shock Hazard. To check the power supplies, remove the instrument cover as described in “Mechanical Disassembly”, on page 112. The main power supply provides a +12 Vdc supply to the main circuit board. All other supplies are derived from this supply. This supply is energized at all times while the line power cord is connected. Power Supply Minimum Maximum +12 V 11.4 V 12.
Chapter 6 Disassembly and Repair Self-Test Procedures Self-Test Procedures Power-On Self-Test Each time the instrument is powered on, a small set of self-tests are performed. These tests check that the minimum set of logic and output hardware are functioning properly. In addition to some basic checks, the power-on self test consists of tests 601 through 632. 4 Complete Self-Test To perform a complete self-test: 1 Press on the front panel. 2 Select the Self Test softkey from the “Test / Cal” menu.
Chapter 6 Disassembly and Repair Self-Test Procedures Self-Tests A complete self-test performs the following tests. A failing test is indicated by the test number and description in the display. 6 601 Self-test failed; system logic This error indicates a failure of the main processor, system RAM, or system ROM. 603 Self-test failed; waveform logic This error indicates that the waveform logic in the synthesis IC has failed.
Chapter 6 Disassembly and Repair Self-Test Procedures 626 - 629 626: Self-test failed; waveform filter path select relay 627: Self-test failed; -10 dB attenuator path 628: Self-test failed; -20 dB attenuator path 629: Self-test failed; +20 dB amplifier path These errors indicate that the specified relay is not being properly switched or the attenuator/amplifier is not providing the expected amplification or gain. These self-tests use the internal ADC to verify that attenuators are operating properly.
Chapter 6 Disassembly and Repair Mechanical Disassembly Mechanical Disassembly For procedures in this manual, the following tools are required for disassembly: • T20 Torx driver (most disassembly) • T15 Torx driver (support plate and fan removal) • 9/16-inch or adjustable open-end wrench (rear-panel BNC connectors) The following tools may also be needed if further disassembly is required. • 7 mm nut driver (rear-panel GPIB connector) WARNING SHOCK HAZARD.
Chapter 6 Disassembly and Repair Mechanical Disassembly General Disassembly Procedure 1 Turn off the power. Remove all cables from the instrument. 2 Rotate the handle upright and pull off. 4 3 Pull off the instrument bumpers. 6 4 Loosen the two captive screws in the rear bezel and remove the rear bezel.
Chapter 6 Disassembly and Repair Mechanical Disassembly 5 Slide off the instrument cover. Slide Cover Off 6 Remove the two screws securing the power supply deck to the chassis. Lift off the deck. The power supply assembly is attached to the deck.
Chapter 6 Disassembly and Repair Mechanical Disassembly 7 Lay the deck and power supply assembly to the side. 4 Many of the service procedures can now be performed without further disassembly. Troubleshooting and service procedures that require power be applied can be performed with the instrument in this state of disassembly. WARNING SHOCK HAZARD. Only service-trained personnel who are aware of the hazards involved should remove the instrument covers.
Chapter 6 Disassembly and Repair Mechanical Disassembly Removing the Main Power Supply Assembly Loosen the captive screw securing the power supply cover to the deck. Slide the power supply cover and power supply and lift from the deck. Slightly spread the ends of the power supply cover and slide the power supply out of the cover. Disconnect the line input, ground, and output cables from the power supply. The main power supply should be replaced as an assembly.
Chapter 6 Disassembly and Repair Mechanical Disassembly Front-Panel Removal Procedure 1 Gently lift both ends of the flat flex cable connector actuator and disconnect the cable from the main PC board (A1 assembly). Caution To prevent damage to the cable and connector, use care when lifting the actuator. Excessive or uneven force may damage the actuator or connector.
Chapter 6 Disassembly and Repair Mechanical Disassembly 2 Remove the two screws from the front edge of the main PC board (A1 assembly).
Chapter 6 Disassembly and Repair Mechanical Disassembly 3 Push the side flanges of the chassis inward while lifting off the front panel. There should now be enough play in the chassis sides and front panel assembly to allow the side of the front panel to be disconnected from the chassis.
Chapter 6 Disassembly and Repair Mechanical Disassembly Front-Panel Disassembly 1 Loosen the captive screw holding the support plate. Lift the end of the support plate and rotate out of the front panel assembly.
Chapter 6 Disassembly and Repair Mechanical Disassembly 2 Unplug the inverter cable from the keyboard PC board (A2 assembly). Gently lift both ends of the flat flex cable connector actuator and disconnect the cable from the PC board. Lift out the display assembly Caution To prevent damage to the cable and connector, use care when lifting the actuator. Excessive or uneven force may damage the actuator or connector.
Chapter 6 Disassembly and Repair Mechanical Disassembly 3 Pull to remove the knob. Lift out the keyboard PC board (A2 assembly).
Chapter 6 Disassembly and Repair Mechanical Disassembly External Timebase Circuit Board Disassembly The External Timebase is an option to the basic instrument (Option 001). Remove the hex nuts and washers holding the rear panel 10 MHz In and 10 MHz Out BNC connectors. Pull the External Timebase PC board (A3 assembly) from the back panel as shown below. Then unplug the captive ribbon cable from the keyed connector on the main PC board (J601 on the A1 assembly). Remove the A3 assembly from the chassis.
Chapter 6 Disassembly and Repair Replaceable Parts Replaceable Parts This section contains information for ordering replacement parts for your instrument. The parts lists are divided into the following sections. Parts are listed by part number. The replaceable parts lists include a brief description of each part with applicable Keysight part number. To Order Replaceable Parts You can order replaceable parts from Keysight using the Keysight part number.
Chapter 6 Disassembly and Repair Replaceable Parts Parts List Keysight Part Number Description 0960-2545 Rotary Encoder 1250-2913 MOD IN BNC 1250-3569 Output/Sync BNC 1252-2161 GPIB Connector 1253-5030 LAN Connector 2090-0886 Display 33210-60201 Front Panel 33210-80001 Opt 001 Retrofit Kit 33220-66502 Front Panel PCB 33220-67601 Assembly Line Filter 33220-68501 Fan Assembly 33220-84101 Cover 33220-87910 Power Supply Assembly 33220-88304 Rear Bezel 33250-49301 Window 33250-87
Chapter 6 Disassembly and Repair Replaceable Parts 6 126
7 Backdating 7
Backdating This chapter normally contains information necessary to adapt this manual to instruments not directly covered by the current content. At this printing, the manual applies to all instruments.
This information is subject to change without notice. © Keysight Technologies 2008, 2014 Edition 2, November 2014 *33210-90010* 33210-90010 www.keysight.
