Agilent Technologies AGILENT U2761A Servisní příručka Strana 1

Agilent TechnologiesAgilent U2761A USB Modular Function/Arbitrary Waveform GeneratorService Guide

x U2761A Service GuideTHIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

U2761A Service Guide xiContents1 Characteristics and Specifications 1Product Characteristics 2Product Specifications and Characteristics 42 G

xii U2761A Service Guide Calibration Procedure 30Internal Timebase Adjustment 31Output Impedance Adjustment 32DC Offset (High Impedance) Adju

U2761A Service Guide xiiiList of FiguresFigure 3-1 U2761A to frequency counter connection 18Figure 3-3 U2761A to DMM connection 20Figure 3

xiv U2761A Service Guide List of TablesTab l e 3- 1 Recommended test equipment 16Tab l e 3- 2 Configuration for timebase verification

1Agilent U2761A USB Modular Function/Arbitrary Waveform GeneratorService GuideAgilent Technologies1

1 Characteristics and Specifications 2 U2761A Service GuideProduct CharacteristicsREMOTE INTERF

Characteristics and Specifications 1 U2761A Service Guide 3[1] Requires a direct USB connection to the PC so the appropriate driver can be installed i

1 Characteristics and Specifications 4 U2761A Service GuideProduct Specifications and Character

Characteristics and Specifications 1 U2761A Service Guide 5Ramp, TriangleFrequency range 1 μHz to 200 kHz (1 μHz resolution)Linearity < 0.2% of pea

ii U2761A Service GuideNotices© Agilent Technologies, Inc., 2008–2013No part of this manual may be reproduced in any form or by any means (including e

1 Characteristics and Specifications 6 U2761A Service GuideCOMMON CHARACTERISTICSAmplitudeRange

Characteristics and Specifications 1 U2761A Service Guide 7MODULATIONAMCarrier waveforms Sine, Square, Ramp, ArbitrarySource InternalInternal modulati

1 Characteristics and Specifications 8 U2761A Service Guide1 Add 1/10th of output amplitude an

9Agilent TechnologiesAgilent U2761A USB Modular Function/Arbitrary Waveform GeneratorService Guide2Getting StartedIntroduction 10Self-Test 10Agi

2 Calibration 10 U2761A Service GuideIntroductionSelf-TestA brief power-on self-test occurs aut

Calibration 2 U2761A Service Guide 112 Click Start on the Self-Test form.3 Click OK to continue when the message box appears.4 Wait for a few m

2 Calibration 12 U2761A Service GuideAgilent Technologies Calibration ServicesWhen your U2761A

Calibration 2 U2761A Service Guide 13Obtaining Repair Service (Worldwide)To obtain service for your U2761A (in-warranty, under service contract,

2 Calibration 14 U2761A Service GuideRepackaging for ShipmentIf the U2761A is to be shipped to

15Agilent TechnologiesAgilent U2761A USB Modular Function/Arbitrary Waveform GeneratorService Guide3CalibrationIntroduction 16Recommended Test Equi

U2761A Service Guide iiiSafety SymbolsThe following symbols on the instrument and in the documentation indicate precautions which must be taken to mai

3 Calibration 16 U2761A Service GuideIntroductionIf the U2761A fails any of the tests or if an

Calibration 3 U2761A Service Guide 17Test ConsiderationFor optimum performance, all procedures should comply with the following recommendations.• Ensu

3 Calibration 18 U2761A Service GuidePerformance Verification ProceduresIt is recommended to c

Calibration 3 U2761A Service Guide 192 Set the U2761A to the output shown in the table below and measure the output frequency. Make sure that the U276

3 Calibration 20 U2761A Service Guide2 Use the DMM to make the resistance measurement at the o

Calibration 3 U2761A Service Guide 212 Set the U2761A based on the following.• Load impedance: High-Z• Function: DC3 Set the U2761A to each output lis

3 Calibration 22 U2761A Service Guide3 Set the U2761A to each output listed in the table below

Calibration 3 U2761A Service Guide 23Amplitude Flatness (–20 dB Range) VerificationThis procedure verifies the high frequency AC amplitude flatness ab

3 Calibration 24 U2761A Service Guide2 Set the U2761A based on the following.• Load impedance:

Calibration 3 U2761A Service Guide 25Table 3 - 7 Configuration for AC amplitude flatness (–20 dB range) verification U2761A MeasurementFunction Amplit

iv U2761A Service GuideGeneral Safety InformationThe following general safety precautions must be observed during all phases of operation of this inst

3 Calibration 26 U2761A Service GuideAmplitude Flatness (0 dB Range) VerificationThis procedur

Calibration 3 U2761A Service Guide 27Table 3 - 8 Configuration for AC amplitude flatness (0 dB range) verification U2761A MeasurementFunction Amplitud

3 Calibration 28 U2761A Service GuideAmplitude Flatness (+20 dB Range) VerificationThis proced

Calibration 3 U2761A Service Guide 29Table 3 - 9 Configuration for AC amplitude flatness (+20 dB range) verification U2761A MeasurementFunction Amplit

3 Calibration 30 U2761A Service GuideCalibration ProcedureCalibration is necessary when the on

Calibration 3 U2761A Service Guide 31Please note that the calibration constant will only be stored after the user completes the subsequent calibration

3 Calibration 32 U2761A Service Guide5 Proceed to output impedance adjustment or exit the cali

Calibration 3 U2761A Service Guide 331 Calibration constant is stored after completing this setup.5 Proceed to DC offset adjustment or exit the calib

3 Calibration 34 U2761A Service Guide4 Proceed to AC amplitude (High Impedance) adjustment or

Calibration 3 U2761A Service Guide 354 Fill in the table below using the measurement results in Table 3- 13.Table 3 - 14 Sine wave flatness worksheet5

U2761A Service Guide vEnvironment ConditionsThis instrument is designed for indoor use and in the area with low condensation. The table below shows th

3 Calibration 36 U2761A Service Guide7 Use the DMM to perform the AC voltage measurement at th

Calibration 3 U2761A Service Guide 37Amplitude Flatness (–20 dB Range) AdjustmentThis procedure calibrates the AC amplitude flatness for high frequenc

3 Calibration 38 U2761A Service Guide1 Calibration constant is stored after completing this s

Calibration 3 U2761A Service Guide 39Amplitude Flatness (0 dB Range) AdjustmentThis procedure calibrates the AC amplitude flatness for high frequency

3 Calibration 40 U2761A Service Guide1 Calibration constant is stored after completing this s

Calibration 3 U2761A Service Guide 41Amplitude Flatness (+20 dB Range) AdjustmentThis procedure calibrates the AC amplitude flatness for high frequenc

3 Calibration 42 U2761A Service Guide1 Calibration constant is stored after completing this s

43Agilent TechnologiesAgilent U2761A USB Modular Function/Arbitrary Waveform GeneratorService Guide4 DisassemblyGeneral Disassembly 44Disassembly I

4 Disassembly 44 U2761A Service GuideGeneral DisassemblyThis chapter provides the step-by-step

Disassembly 4 U2761A Service Guide 45Remove the two indicated screws from the front metal piece.Gently pull the front metal piece out, which is attach

vi U2761A Service GuideRegulatory MarkingsThe CE mark is a registered trademarkof the European Community.This CEmark shows that the product complieswi

4 Disassembly 46 U2761A Service GuideReassembly InstructionsThe reassembly process is simply t

Disassembly 4 U2761A Service Guide 473 You can search for the replacement parts by entering a specific replacement part number or by instruments.• To

4 Disassembly 48 U2761A Service GuideTHIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

49Agilent U2761A USB Modular Function/Arbitrary Waveform GeneratorService GuideAgilent Technologies5

5 Troubleshooting 50 U2761A Service GuideTroubleshootingThis section offers suggestions for s

U2761A Service Guide 51IndexAaccuracy, 5, 12, 16, 18, 19, 20adjustment+20 dB range flatness, 400 dB range flatness, 38-20 db range AC flatness, 36AC a

52 U2761A Service GuideIndexPphase noise, 3PM 6carrier waveform, 6phase deviation, 6power consumption, 2power meter, 16, 22, 23, 25, 27, 36, 38, 40pow

© Agilent Technologies, Inc. 2008–2013Seventh Edition, August 2, 2013U2761-90010www.agilent.comAgilent TechnologiesContact usTo obtain service, warran

U2761A Service Guide viiWaste Electrical and Electronic Equipment (WEEE) Directive 2002/96/ECThis instrument complies with the WEEE Directive (2002/96

viii U2761A Service GuideIn This Guide…1 Characteristics and SpecificationsThe characteristics and specifications of the U2761A are listed in this cha

U2761A Service Guide ixDeclaration of Conformity (DoC)The Declaration of Conformity (DoC) for this instrument is available on the Web site. You can se