Keysight Technologies EDU33210 Series User manual

Service Guide
EDU33210 Series
Trueform Arbitrary
Waveform Generators

Notices 4
Copyright Notice 4
Manual Part Number 4
Edition 4
Published by 4
Warranty 4
Technology Licenses 4
U.S. Government Rights 5
Third Party Licenses 5
Waste Electrical and Electronic Equipment (WEEE) 5
Declarations of Conformity 5
Safety Information 6
1 Service and Maintenance 7
Specifications and Characteristics 8
General Information 8
Types of service available 8
Obtaining repair service (worldwide) 8
Repackaging for shipment 8
Cleaning and handling 9
Troubleshooting 9
Self-Test Procedures 10
Self-Test Error 10
User Replaceable Parts 11
Battery Replacement 11
Replacing the Battery 11
Removing/Installing the Knob 13
2 Performance Verification 14
Performance Verification 15
Recommended Test Equipment 16
Test Considerations 16
Performance Verification Tests 17
Internal timebase verification 17
AC amplitude (high impedance) verification 18
DC offset voltage verification 19
- 8 dB flatness verification 20
- 24 dB flatness verification 22
3 Calibration Adjustments 25
Calibration Adjustment 26
Closed–case electronic calibration 26
Keysight Technologies calibration services 26
Calibration interval 26
Time required for calibration 26
Automating calibration procedures 26
Calibration Adjustment Process 27
Calibration Security 27
Calibration Count 28
Calibration Message 28
Calibration Error 29
Calibration Procedure 30
Aborting a calibration in progress 30
2 Keysight EDU33210 Series Service Guide

Sequence of adjustments 30
Channel 1 Adjustments 31
Self-test 31
Frequency (internal timebase) adjustment 32
Internal ADC adjustment 33
Self calibration adjustment 34
Output impedance adjustment 34
AC amplitude (high-impedance) adjustment 35
- 8 dB range flatness adjustment 37
- 24 dB range flatness adjustment 39
Channel 2 Adjustments (EDU33212A only) 41
Self calibration adjustment (channel 2) 41
Output impedance adjustment (channel 2) 42
AC amplitude (high-impedance) adjustment (channel 2) 43
- 8 dB range flatness adjustment (channel 2) 45
- 24 dB range flatness adjustment (channel 2) 47
Keysight EDU33210 Series Service Guide 3

Notices
Copyright Notice
© Keysight Technologies 2021
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 Keysight Technologies as
governed by United States and international copyright laws.
Manual Part Number
EDU33212-90014
Edition
Edition 1, April 2021
Published by
Keysight Technologies
Bayan Lepas Free Industrial Zone
11900 Bayan Lepas, Penang
Malaysia
Warranty
THE MATERIAL CONTAINED IN THIS DOCUMENT IS PROVIDED “AS IS,” AND IS SUBJECT TO BEING CHANGED,
WITHOUT NOTICE, IN FUTURE EDITIONS. FURTHER, TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE
LAW, KEYSIGHT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, WITH REGARD TO THIS MANUAL
AND ANY INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. KEYSIGHT SHALL NOT BE LIABLE FOR ERRORS
OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING, USE, OR
PERFORMANCE OF THIS DOCUMENT OR OF ANY INFORMATION CONTAINED HEREIN. SHOULD KEYSIGHT AND
THE USER HAVE A SEPARATE WRITTEN AGREEMENT WITH WARRANTY TERMS COVERING THE MATERIAL IN
THIS DOCUMENT THAT CONFLICT WITH THESE TERMS, THE WARRANTY TERMS IN THE SEPARATE AGREEMENT
SHALL CONTROL.
Technology Licenses
The hardware and/or software described in this document are furnished under a license and may be used or copied
only in accordance with the terms of such license.
4 Keysight EDU33210 Series Service Guide

U.S. Government Rights
The Software is “commercial computer software,” as defined by Federal Acquisition Regulation (“FAR”) 2.101.
Pursuant to FAR 12.212 and 27.405-3 and Department of Defense FAR Supplement (“DFARS”) 227.7202, the U.S.
government acquires commercial computer software under the same terms by which the software is customarily
provided to the public. Accordingly, Keysight provides the Software to U.S. government customers under its
standard commercial license, which is embodied in its End User License Agreement (EULA), a copy of which can be
found at http://www.keysight.com/find/sweula. The license set forth in the EULA represents the exclusive authority
by which the U.S. government may use, modify, distribute, or disclose the Software. The EULA and the license set
forth therein, does not require or permit, among other things, that Keysight: (1) Furnish technical information related
to commercial computer software or commercial computer software documentation that is not customarily provided
to the public; or (2) Relinquish to, or otherwise provide, the government rights in excess of these rights customarily
provided to the public to use, modify, reproduce, release, perform, display, or disclose commercial computer
software or commercial computer software documentation. No additional government requirements beyond those
set forth in the EULA shall apply, except to the extent that those terms, rights, or licenses are explicitly required from
all providers of commercial computer software pursuant to the FAR and the DFARS and are set forth specifically in
writing elsewhere in the EULA. Keysight shall be under no obligation to update, revise or otherwise modify the
Software. With respect to any technical data as defined by FAR 2.101, pursuant to FAR 12.211 and 27.404.2 and
DFARS 227.7102, the U.S. government acquires no greater than Limited Rights as defined in FAR 27.401 or DFAR
227.7103-5 (c), as applicable in any technical data.
Third Party Licenses
Portions of this software are licensed by third parties including open source terms and conditions. For more
information, please contact Keysight support, www.keysight.com/find/assist.
Waste Electrical and Electronic Equipment (WEEE)
This product complies with the WEEE Directive) marketing requirement. The affixed product label (see below)
indicates that you must not discard this electrical/electronic product in domestic household waste.
Product Category: With reference to the equipment types in the WEEE directive Annex 1, this product is classified as
“Monitoring and Control instrumentation” product. Do not dispose in domestic household waste.
To return unwanted products, contact your local Keysight office, or see
about.keysight.com/en/companyinfo/environment/takeback.shtml for more information.
Declarations of Conformity
Declarations of Conformity for this product and for other Keysight products may be downloaded from the Web. Go to
https://regulations.about.keysight.com/DoC/default.htm. You can then search by product number to find the latest
Declaration of Conformity.
Keysight EDU33210 Series Service Guide 5

Safety Information
A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly per-
formed or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a CAUTION notice
until the indicated conditions are fully understood and met.
A WARNING notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly per-
formed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING notice until the indicated con-
ditions are fully understood and met.
6 Keysight EDU33210 Series Service Guide

1 Service and Maintenance
Specifications and Characteristics
General Information
Troubleshooting
Self-Test Procedures
Self-Test Error
User Replaceable Parts
Battery Replacement
Removing/Installing the Knob
This chapter provides the specifications and service information on
cleaning, troubleshooting, repair, and replaceable parts of the EDU33210
Series waveform generator. This chapter also explains how to assemble
and disassemble the instrument.
Keysight EDU33210 Series Service Guide 7

Specifications and Characteristics
For the characteristics and specifications of the EDU33210 Series waveform generator, refer to the datasheet
at https://www.keysight.com/us/en/assets/3121-1004/data-sheets/EDU33210-Series-20-MHz-Function-
Arbitrary-Waveform-Generators.pdf.
General Information
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. You also have the
option to purchase a service contract that extends the coverage after the standard warranty expires.
Obtaining repair service (worldwide)
To obtain service for your instrument, contact your nearest Keysight Technologies Service Center. They will arrange
to have your unit repaired or replaced, and can provide warranty or repair–cost information where applicable. Ask
the Keysight Technologies Service Center for shipping instructions, including what components to ship. Keysight
recommends that you retain the original shipping carton for return shipments.
Repackaging for shipment
Ensure the following to ship the unit to Keysight for service or repair:
– 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.
– Secure the container with strong tape or metal bands.
– If the original shipping container is unavailable, use a container that will ensure at least 10 cm (4 in.) of
compressible packaging material around the entire instrument. Use static-free packaging materials.
Keysight suggests that you always insure your shipments.
8 Keysight EDU33210 Series Service Guide

Cleaning and handling
Cleaning
To prevent electrical shock, disconnect the instrument from AC mains power and disconnect all test leads before
cleaning. Clean the outside of the instrument using a soft, lint-free, cloth slightly dampened with water.
– Do not use detergent or solvents.
– Do not attempt to clean internally.
If required, contact a Keysight Technologies Sales and Service office to arrange for proper cleaning to ensure that
safety features and performance are maintained.
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 V.
The following guidelines will help prevent ESD damage during service operations:
– Disassemble instruments only in a static-free work area.
– Use a conductive work area to reduce static charges.
– Use a conductive wrist strap to reduce static charge accumulation.
– Minimize handling.
– Keep replacement parts in original static-free packaging.
– Remove all plastic, foam, vinyl, paper, and other static-generating materials from the immediate work area.
Troubleshooting
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 was accurately calibrated within the last year (see
Calibration Adjustment Procedures > Calibration Interval for details).
Perform the following verifications if the unit is inoperative:
– Verify that the ac power cord is connected to the waveform generator.
– Verify that the front-panel power switch is depressed.
– Verify the power-line voltage setting.
Keysight EDU33210 Series Service Guide 9

Self-Test Procedures
A power-on self-test occurs automatically when you turn on the waveform generator. This limited test assures you
that the waveform generator is operational.
Press [System] >Instr. Setup >Self Test to perform the complete self-test of the waveform generator. It takes
approximately 12 seconds for the self-test to complete.
You can also perform a complete self-test from the remote interface, see Programming Guide for details.
– If the self-test is successful, "Self test passed" is displayed on the front panel.
–If the self-test fails, " " is displayed on the front panel. Press [System] >Help >Error View to record the error
code and message and contact Keysight support if necessary.
– If the self-test is successful, this indicates a high chance that the waveform generator is operational.
Self-Test Error
The self test (see the *TST? command) performs a series of tests on the instrument hardware.
A failure can generate multiple error messages; the first one should be considered the primary cause of failure.
Some error messages include a failing channel number (1 or 2), shown as n in the messages below.
Error Code Error Messages
601 Self-test failed; real time clock settings lost
602 Self-test failed; main CPU power supply out of range
603 Self-test failed; main CPU error accessing boot env
604 Self-test failed; front panel processor ping failed
605 Self-test failed; waveform FPGA not programmed
606 Self-test failed; waveform FPGA revision check failed
607 Self-test failed; waveform FPGA read back error
608 Self-test failed; waveform FPGA security check failed
609 Self-test failed; waveform FPGA security check failed
610 Self-test failed; main PLL not locked
611 Self-test failed; FPGA PLL not locked
612 Self-test failed; Chan n, waveform memory PLL not locked
613 Self-test failed; Chan n, waveform memory not initialized
615 Self-test failed; modulation ADC offset too low (too high)
616 Self-test failed; modulation ADC reference too low (too high)
620 Self-test failed; Chan n, waveform memory test failed on idle
621 Self-test failed; Chan n, waveform memory test failed
625 Self-test failed; Chan n, waveform DAC gain[idx] too low (too high)
630 Self-test failed; Chan n, sub attenuator failure 0dB
10 Keysight EDU33210 Series Service Guide

Error Code Error Messages
631 Self-test failed; Chan n, sub attenuator <-7.00 to 0.00>dB too low (too high)
635 Self-test failed; Chan n, null DAC gain[idx] too low (too high)
640 Self-test failed; Chan n, offset DAC gain[idx] too low (too high)
650 Self-test failed; Chan n, 0dB path failure expected 0dB, measured value dB
655 Self-test failed; Chan n, -8 dB pre attenuator path too low (too high)
Self-test failed; Chan n, -16 dB pre attenuator path too low (too high)
Self-test failed; Chan n, -24 dB pre attenuator path too low (too high)
Self-test failed; Chan n, -24 dB post attenuator path too low (too high)
User Replaceable Parts
You can find the instrument support part list at Keysight's Test & Measurement Parts Catalog
http://www.keysight.com/find/parts.
Battery Replacement
SHOCKHAZARD
Only qualified, service-trained personnel who are aware of the hazards involved should remove instrument cov-
ers. Always disconnect the power cable and any external circuits before removing the instrument cover.Some
circuits are active and have power for a short time even when the power switch is turned off.
The internal battery powers the real-time clock. The primary function of the clock it to provide a time stamp for the
internal file system. If the battery fails, the clock and time stamp function will not be available. No other instrument
functions are affected.
Under normal use at room temperature, the lithium battery has a life expectancy between seven and ten years. Note
that battery life will be reduced if the instrument is stored for a prolonged period at temperatures above 40 degrees
Celsius.
The battery type is CR 2032.
Replacing the Battery
Tools required
Items Torque value
T10 Torx screwdriver 0.56 Nm
Flat plastic screwdriver -
Keysight EDU33210 Series Service Guide 11

1. Remove four screws as shown below.
2. Remove the rear panel.
3. Remove nine screws from the chassis. Then, remove the chassis from the front panel.
4. The battery is located at the main board.
5. Press out the small spring clips (see red circle below). Use a flat-bladed plastic screwdriver and carefully pry up
on the side of the battery.
6. Install the new battery. Make sure that the positive side (+) is facing up. Place the battery under the small spring
clips (see red circle below), then push down on the opposite end of the battery to seat the battery (see red arrow
below).
7. Assemble the rear panel when finished.
8. Reset the date and time.
Properly dispose of the old battery in accordance with local laws and regulations.
12 Keysight EDU33210 Series Service Guide

Removing/Installing the Knob
Steps Instructions Visual
1. Pull out the knob to remove the knob from the front panel.
2. To install back the knob, push the knob back in the shaft.
NOTE: Make sure to follow the shaft orientation before pushing the
knob.
Keysight EDU33210 Series Service Guide 13

2 Performance Verification
Performance Verification
Recommended Test Equipment
Test Considerations
Performance Verification Tests
This chapter contains the performance verification procedures which
verify that the EDU33210 Series waveform generator is operating within
its published specifications.
14 Keysight EDU33210 Series Service Guide

Performance Verification
Performance verification ensures that the instrument performs within the specifications stated in the data sheet
(https://www.keysight.com/us/en/assets/3121-1004/data-sheets/EDU33210-Series-20-MHz-Function-
Arbitrary-Waveform-Generators.pdf).
You can perform two different levels of performance verification tests:
–Self test A series of internal verification tests that give a high confidence that the instrument is operational.
–Performance verification tests An extensive set of tests that are recommended as an acceptance test when you
first receive the instrument or after performing adjustments.
–Performance verification tests
–Internal timebase verification
–AC amplitude (high-impedance) verification
–DC offset voltage verification
–-8 dB flatness verification
–- 24 dB flatness verification
Keysight EDU33210 Series Service Guide 15

Recommended Test Equipment
The test equipments recommended for the performance verification and adjustment procedures are listed below.
Type Requirements Recommended model
Digital multimeter ACV, true rms, AC coupled accuracy: ±0.02% to 1 MHz
DCV accuracy: 50 ppm resolution: 100 µV
Resistance Offset-compensated accuracy: ±0.1 Ω
Keysight 3458A
Power meter Specific model Keysight N1914A
Power sensor Specific model Keysight E9304A
Frequency counter Accuracy: 0.1 ppm Keysight 53132A Option 012 (high
stability)
Adapter Type-N (f) to BNC (m), 50 Ω
Adapter BNC male to dual banana
Adapter BNC feedthrough 50 Ω termination Keysight part number: 0960-0301
Adapter Coaxial BNC T-connector
Cable Dual banana (m) to dual banana (m)
Cable RG58 coaxial cable with BNC (m) to dual banana adapter
Cable RG58 coaxial cable with BNC (m) to BNC (m)
[a] Q= Quick Verification, P= Performance Verification
Test Considerations
For optimum performance, all procedures should comply with the following recommendations:
– Ensure that the calibration ambient temperature is stable and between 18 °C and 28 °C. Ideally the calibration
should be performed at 23 °C ±1 °C.
– Ensure ambient relative humidity is less than 80%.
– Allow an hour warm-up period before verification or calibration.
– Measurement cables as short as possible, consistent with the impedance requirements.
– 50 Ω cable (RG-58 or equivalent)
16 Keysight EDU33210 Series Service Guide

Performance Verification Tests
The performance verification tests are recommended as acceptance tests when you first receive the instrument. The
acceptance test results should be compared against the one year test limits the specifications on the instrument
datasheet. After acceptance, you should repeat the performance verification tests at every calibration interval.
If the instrument fails performance verification, adjustment or repair is required.
Adjustment is recommended at every calibration interval. If adjustment is not made, you must establish a ‘guard
band’, using no more than 80% of the specifications, as the verification limits.
Ensure that you have read Test Considerations before running the performance verification tests.
Internal timebase verification
These tests verify output frequency accuracy. All output frequencies are derived from a single generated frequency.
1. Connect the frequency counter to the channel 1 output as shown below (the frequency counter input should be
terminated at 50 Ω).
<
2. Set the instrument to the output described in the table below and measure the output frequency. Be sure the
instrument output is enabled.
Waveform Generator Measurement
Function Amplitude Frequency Nominal Error
Sine 1.00 Vpp 10.000000 MHz 10.000 MHz ±10 Hz
3. Compare the measured value to the test limits shown in the table.
Keysight EDU33210 Series Service Guide 17

AC amplitude (high impedance) verification
This test checks AC amplitude output accuracy at 1 kHz frequency using each attenuator.
1. Set the multimeter to measure Vrms. Connect the multimeter to the channel output as shown above.
2. Set the instrument to each output in the table below and measure the output voltage with the multimeter. Be
sure the output impedance is set to High–Z and the output is enabled.
Waveform Generator Measurement
Output Setup Function Amplitude Frequency Nominal Error[a]
High Z[b] Sine 400 mVrms 1 kHz 400 mVrms ±0.008354 Vrms
High Z Sine 400 mVrms 1 kHz 400 mVrms ±0.008354 Vrms
High Z Sine 1 Vrms 1 kHz 1 Vrms ±0.020354 Vrms
High Z Sine 2.5 Vrms 1 kHz 2.5 Vrms ±0.050354 Vrms
High Z Sine 7 Vrms 1 kHz 7 Vrms ±0.140354 Vrms
[a] Based upon 2% of setting ±1 mVpp; converted to Vrms for High–Z.
[b] Use the following sequence to set this output:
1. Set amplitude to 400.0 mVrms
2. Set DC Offset to 1.0 VDC
3. Set Auto-Range to OFF
4. Set DC Offset Voltage to 0.0 VDC
5. After the measurement, set autorange ON for remaining measurements.
3. Compare the measured value to the test limits shown in the table.
4. For EDU33212A only. Connect multimeter to channel 2 output and repeat steps 2 and 3.
18 Keysight EDU33210 Series Service Guide

DC offset voltage verification
This test checks the DC Offset Voltage on two attenuator ranges:
1. Set the multimeter to measure DCV. Connect the multimeter to the channel output as shown below.
2. Set the instrument to each output in the table below and measure the output voltage with the multimeter. Be
sure the output impedance is set to High–Z and the output is enabled.
Waveform Generator Measurement
Output Setup Function Voltage Nominal Error[a]
High Z DC 0.0 V 0.0 VDC ±0.005 VDC
High Z DC 500 mV 0.500 VDC ±0.010 VDC
High Z DC 10.0 V 10.0 VDC ±0.105 VDC
[a] Based upon 1% of setting ±5 mVDC for High-Z.
3. Compare the measured value to the test limits shown in the table.
4. For EDU33212A only. Connect multimeter to channel 2 output and repeat steps 2 and 3.
Keysight EDU33210 Series Service Guide 19

- 8 dB flatness verification
This test checks high frequency AC amplitude flatness on the -8 dB attenuator range.
1. Connect the multimeter with a 50 Ω feedthrough to the channel output as shown below.
2. Set the instrument to each output in the table below and configure the multimeter to AC mode. Measure the out-
put voltage with the multimeter. This will become the reference measurement. Set the output impedance to 50
Ω. Be sure the output is enabled.
Waveform Generator Measurement
Output Load Function Amplitude Frequency Nominal Error
50 Ω Sine 1.200 Vrms 1.00 kHz 1.200 Vrms ±0.024354 Vrms
3. The measured value in Step 2 is the flatness reference point at 1 kHz.
4. Convert multimeter error to ratio using equation below. This value is required for next measurement point.
Reference point accuracy @1 kHz (dB) = 20 x log(multimeter measurement in Vrms / amplitude setting)
5. Set the instrument to the output described in the table below and measure the amplitude by using multimeter.
Without resetting and setting the instrument, remove the multimeter and connect power meter and power
sensor to the channel output as shown below. Then, measure the amplitude by using power meter and power
sensor. Crossover error between both instruments are required to be find out in the following step.
Waveform Generator Measurement
Output Load Function Amplitude Frequency Nominal Error
50 Ω Sine 1.200 Vrms 100.000 kHz 0 dB ±0.10 dB
20 Keysight EDU33210 Series Service Guide