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Agilent 75000 Series BAgilent E1326B5 1/2-Digit MultimeterService Manual Enclosed is the Service Manual for the Agilent E1326B

1General InformationIntroduction This Agilent E1326B Service Manual contains information required totest, adjust, troubleshoot, and repair the Agilent

Warnings andCautionsThis section contains WARNINGS which must be followed for yourprotection and CAUTIONS which must be followed to avoid damage tothe

WARNINGCAPACITOR VOLTAGES. Capacitors inside the mainframe mayremain charged even when the mainframe has beendisconnected from its source of supply.U

MultimeterSpecifications Multimeter specifications are listed in Appendix A of the AgilentE1326B/E1411B User’s Manual. These specifications are thepe

Recommended Test EquipmentTable 1-1 lists the test equipment recommended for testing, adjustingand servicing the multimeter. Essential requirements fo

NOTES:1-6 General Information

2InstallationIntroduction This chapter provides information to install the Agilent E1326Bmultimeter, including initial inspection, preparation for use

Shipping the MultimeterIf you need to return the Agilent E1326B multimeter to AgilentTechnologies, first remove any adapters or connectors before pack

3 Operating InstructionsIntroduction This chapter lists operating information for the Agilent E1326Bmultimeter, including:• Multimeter operation• Oper

3. A "0" returned means no self-test failure, while "1", "2", "3", or "4"returned means a failure w

4Verification TestsIntroduction The three levels of test procedures described in this chapter are used toverify that the Agilent E1326B multimeter:• i

NOTEThe upper and lower limits in the Performance Test Record assume thetest equipment used is calibrated and operating at peak performance. Ifthis i

3. Execute the multimeter functional verification test using the *TST?command. See the following example which uses an HP 9000 Series 300computer wit

Test 4-1: DC Voltage Test (Zero Volt Input)This test verifies DC Voltage accuracy on all five ranges with a zero volt input.Equipment Setup 1. Connec

3. Repeat steps 1 and 2 for the following ranges: E1326BRange10%OverrangeInput0.91 V7.27 V58.1 V300 V1 V 8 V64 V N/A0 V0 V0 V0 V4. Remove power and

Test 4-2: DC Voltage Test (DCV Input)This test verifies DC Voltage accuracy on all five ranges with DCvoltage inputs.Equipment Setup 1. Connect the e

Test Procedure 1. Set the DC Standard (Datron 4708, Option 10) Output to 0.1 DCV.2. Set the Agilent E1326B range to 0.113 V (0.125 V wi

100 PRINT "Set DC Standard to ";Volts(I);" VDC" 110 PRINT "Press Continue when ready" 120 PAUSE 130 CLE

WARNINGThe AC Standard (Datron 4708, Option 20) can producedangerous voltages which are present on the terminals. Do nottouch the front (or rear) pan

Example: AC Voltage TestThis example performs an ACV test for a power line referencefrequency of 60 Hz. Change line 80 to OUTPUT 70903;"CAL:LFR 5

CertificationAgilent Technologies certifies that this product met its published specifications at the time of shipment from the factory. AgilentTechn

Test 4-4: Resistance Test (4-Wire Ohms)This test verifies the 4-wire resistance accuracy of the 2kΩ, 131kΩ, and1MΩ ranges.NOTEThe DC Voltage performan

Test Procedure 1. Set the Resistance Standard (Datron 4708, Option 30) to 1 kΩ setting.2. Set the Agilent E1326B range to 1861Ω (2048Ω

1 ! 4-Wire Ohms Performance Verification2 ! 10 OPTION BASE 1 20 DIM Range(3),Source(3),Read_meas(3),Limit(3),Ohms(3) 30 DATA 1861, 11

Performance Test RecordTable 4-1, Performance Test Record for the Agilent E1326B Multimeter,is a form you can copy and use to record performance veri

Table 4-1. Performance Test Record for the Agilent E1326B Multimeter (Page 1 of 3)Test Facility:Name _____________________________________Address __

Table 4-1. Performance Test Record for the Agilent E1326B Multimeter (Page 2 of 3)Model _________________________________ Report No. ____________

Table 4-1. Performance Test Record for the Agilent E1326B Multimeter (Page 3 of 3)Model ________________________________ Report No. _______________

NOTES:4-18 Verification Tests

5AdjustmentsIntroduction This chapter contains procedures to adjust the Agilent E1326Bmultimeter for peak performance. For best performance, theinst

DC VoltageAdjustments This procedure adjusts Agilent E1326B DC voltage measurementaccuracy.Equipment Setup1. Connect the equipment as shown in Figure

Frame or chassis ground terminal—typicallyconnects to the equipment’s metal frame.Alternating current (AC).Direct current (DC). Indicates hazardous vo

NOTE*RST sets Auto Zero to ON and Power Line Cycles to 1.AdjustmentProcedure1. Set the DC Standard output to 7.7 V.2. Set the Agilent E1326B range t

displays an "adjustment complete" message. If a calibration error occurs,the program displays the calibration error and prompts you to repea

310 PRINT "Press Continue for the next adjustment" 320 PAUSE 330 CLEAR SCREEN 340 NEXT I 350 END AC Voltage AdjustmentsThis

• Power Line Cycles (PLC) ... 1• Line Freq Reference (CAL:LFR) ... 50 Hz or 60 HzNOTE*RST sets

30 Re_try: !40 PRINT "Set AC Standard to 5.6 Vac at 1.0 kHz" 50 PRINT "Press Continue when ready" 60 PAUSE 70 C

NOTEThe DC Voltage adjustment and the AC Voltage adjustment MUST beperformed before the Resistance adjustment.Equipment Setup 1. Connect the equipme

4. Repeat steps 1 through 3 using the following Agilent E1326B (and FRES:RANG) ranges, and Resistance Standard (and CAL:VAL) values. Agilent

250 CLEAR SCREEN 260 GOTO Re_try 270 ELSE 280 PRINT "Adjustment complete with";Source(I);"Ohms source" 290

14 PacerOverrunErrorThe pacer is in use and the pacer rate is faster than themaximum A/D conversion rate based on integration time,autorange setting,

5-12 Adjustments

Declaration of Conformityaccording to ISO/IEC Guide 22 and CEN/CE NELEC EN 45014Manufacturer’s Name: Agilent Technologies, Inc.Loveland Manufacturing

6Replaceable PartsIntroduction This chapter contains information to order replaceable parts for theAgilent E1326B multimeter. ExchangeAssembliesTable

Reference*DesignatorAgilent PartNumberQty Description Mfr**CodeMfr Part NumberA2A2J101A2J102A2J103A2K104-K105A2K106A2XU104E1326-6650244702-616031252-3

Figure 6-1. Agilent E1326B Replaceable PartsReplaceable Parts 6-3

Table 6-3. Agilent E1326B Code List of ManufacturersMfrCodeManufacturer Name Address00000007790677618873249312726428480717077591581

7Manual ChangesIntroduction This chapter contains information to adapt this manual to instrumentsfor which the content does not directly apply. Since

7-2 Manual Changes

8ServiceIntroduction This chapter contains information to service the Agilent E1326Bmultimeter, including:• recommended repair strategy• troubleshooti

Service notes and other service literature for the Agilent E1326Bmultimeter may be available through Agilent. For information, contactyour nearest Ag

Table 8-2. Self-Test ErrorsError Description Typical Causes1234Multimeter does not respond toself-testInvalid communication

Table 8-3. Agilent E1326B Tests/ChecksTest/Check ReferenceDesignatorCheck:Heat Damage - - - - - - - - - - Discolored PC boardsDa

Agilent 75000 Series B Service DocumentationSuggested Sequence to Use ManualsManual DescriptionsInstallation and Getting Started Guide. Cont

Testing A1/A2 PCAsTo test the A1 Outguard PCA and the A2 Inguard PCAs, removemainframe power and remove the multimeter from the mainframe.Then, remove

Repair/MaintenanceGuidelinesThis section gives guidelines to repair and maintain the Agilent E1326Bmultimeter, including:• ESD precautions• Removing A

components.• After you remove an assembly from the multimeter, place theassembly on a conductive surface to guard against ESD damage.Do not stack asse

Removing A2Inguard PCAUse the following steps to remove the A2 A/D Inguard printed circuitassembly (PCA) from the A1 Outguard PCA. See Figure 8-1 for

Soldering Printed CircuitBoardsThe etched circuit boards in the multimeter have plated-through holesthat allow a solder path to both sides of the insu

NOTES:8-10 Service

ACalculating Multimeter AccuracyIntroduction This appendix shows how multimeter accuracy, measurementuncertainty, and test accuracy ratio (TAR) values

Test Accuracy Ratio (TAR) DefinitionTest Accuracy Ratio (TAR) is the ratio of multimeter accuracy tomeasurement uncertainty. For the Agilent E1326B m

input the Low Limit in Table 4-1 = 6.9986 Volts and the High Limit =7.0014 Volts. AC VoltageAccuracy EquationsFrom Appendix A of the Agilent E1326B/E

Measurement UncertaintyCalculationsMeasurement uncertainties for the Datron 4708 source are calculatedusing the 90-day accuracy specifications in the

What’s in this ManualManual Overview This manual shows how to service the Agilent E1326B 5 1/2-Digit Multimeter. Additional manuals whichmay be requ

Calculate ACVMeasurement Uncertainty From Section 6 - Specifications of the Datron 4708 User’s Handbook, ACVoltage (Option 20) Accuracy (90 days since

Test AccuracyRatio (TAR)CalculationsFor the Agilent E1326B multimeter Test Accuracy Ratio (TAR) =[High Limit - Input Value]/Measurement Uncertainty w

BVerification Tests - C ProgramsFunctionalVerificationTestThis program is designed to do the Functional Verification Test found inChapter 4 - Verifica

PerformanceVerificationTestsThese programs are designed to do the Performance Verification Testsfound in Chapter 4 - Verification Tests.Example: Zero

Example: DCVoltage TestThis test performs a DC Voltage test for positive input DC volts and apower line reference frequency of 60 Hz. /* DC Voltage T

Example: ACVoltage TestThis example performs an AC voltage test for a power line referencefrequency of 60 Hz./* AC Voltage Test E1326B */

Example:Resistance TestThis example performs a 4-wire ohms resistance test. The program alsocalculates the Upper and Lower Limit values for the ACTUA

Adjustments These programs are designed to do the adjustments found in Chapter 5 -Adjustments.DC VoltageAdjustmentsThis example performs DC Voltage ad

AC VoltageAdjustmentsThis example performs an AC Voltage adjustment for a power linereference frequency of 60 Hz and an input of 5.6 Vac at 1 kHz. If

ResistanceAdjustmentsThis example performs a 4-wire ohms resistance adjustment for a powerline reference frequency of 60 Hz. If a calibration error o

ContentsChapter 1 - General InformationIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 6 - Replaceable PartsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .