Agilent Technologies L4411A 1U DMM Servisní příručka

Agilent TechnologiesAgilent 34410A/11A 6 ½ Digit Multimeter(includes the L4411A 1U DMM)Service Guide

10 34410A/11A/L4411A Service GuideThe Display at a GlanceThe following key refers to the primary front- panel display.For further information, see Cha

100 34410A/11A/L4411A Service Guide3 Calibration ProceduresAC Current Flatness Calibration ProcedureReview the “Test Considerations” on page 63 and “F

34410A/11A/L4411A Service Guide 101Calibration Procedures 3Input Current, rms Frequency Range100 µΑ 1 kHz 100 µΑ 5 kHz 7.5 kHz 9.7 kHz 10 kHz 220 Hz1

102 34410A/11A/L4411A Service Guide3 Calibration ProceduresFinishing Adjustments1 Remove all shorting blocks and connections from the instrument.2 Res

103Agilent 34410A/11A/L4411A 6½ Digit MultimeterService GuideAgilent Technologies4Disassembly and RepairOperating Checklist 104Types of Service Availa

104 34410A/11A/L4411A Service Guide4 Disassembly and RepairOperating ChecklistBefore returning your multimeter to Agilent for service or repair check

34410A/11A/L4411A Service Guide 105Disassembly and Repair 4Types of Service AvailableIf your instrument fails during the warranty period, Agilent Tech

106 34410A/11A/L4411A Service Guide4 Disassembly and RepairRepackaging for ShipmentIf the unit is to be shipped to Agilent for service or repair, be s

34410A/11A/L4411A Service Guide 107Disassembly and Repair 4To Replace the Current Input Fuse The front and rear current input terminals are protected

108 34410A/11A/L4411A Service Guide4 Disassembly and RepairSelf Test Error NumbersNOTEOn the remote interface, a self–test failure will generate SCPI

34410A/11A/L4411A Service Guide 109Disassembly and Repair 4Calibration ErrorsThe following errors indicate failures that may occur during a calibratio

34410A/11A/L4411A Service Guide 11The L4411A at a GlanceL4411A Option 1 - Front Panel Measurement Terminals124621 On/Stand-By button2 Input measuremen

110 34410A/11A/L4411A Service Guide4 Disassembly and Repair34410A/11A Display and Keypad Tests You can test the keypad and display. Hold down the ke

34410A/11A/L4411A Service Guide 111Disassembly and Repair 434410A/11A Mechanical DisassemblyFor procedures in this manual, the following tools are req

112 34410A/11A/L4411A Service Guide4 Disassembly and Repair3 Remove the instrument bumpers. Pull from a corner and stretch the bumpers off the instrum

34410A/11A/L4411A Service Guide 113Disassembly and Repair 45 Remove the cover. Remove the Torx drive screw in the bottom of the cover and slide the co

114 34410A/11A/L4411A Service Guide4 Disassembly and Repair7 Remove front panel.a Using a small bladed screwdriver, gently pry the black terminal latc

34410A/11A/L4411A Service Guide 115Disassembly and Repair 4c There is now enough play to allow the side of the front panel to be pried from the chassi

116 34410A/11A/L4411A Service Guide4 Disassembly and RepairFront Panel Disassembly1 Remove the keypad and display assembly. a Using a flat blade screw

34410A/11A/L4411A Service Guide 117Disassembly and Repair 4L4411A Mechanical DisassemblyFor procedures in this manual, the following tools are require

118 34410A/11A/L4411A Service Guide4 Disassembly and Repair3 Remove the power switch push rod. Gently move the power switch push rod toward the front

34410A/11A/L4411A Service Guide 119Disassembly and Repair 45 Remove the power supply safety shield. Remove the Torx screw holding the safety shield an

12 34410A/11A/L4411A Service GuideIn This Guide…1 SpecificationsThis chapter lists the multimeter’s specifications and describes how to interpret thes

120 34410A/11A/L4411A Service Guide4 Disassembly and Repair7 Remove the Power Supply Assembly. Remove the four Torx screws holding the power supply as

34410A/11A/L4411A Service Guide 121Disassembly and Repair 48 Remove the Display Assembly. Remove the two Torx screws holding the display bracket to th

122 34410A/11A/L4411A Service Guide4 Disassembly and RepairReplaceable PartsThis section contains information for ordering replacement parts for your

34410A/11A/L4411A Service Guide 123Disassembly and Repair 4Parts List 34410A/11AAgilent Part Number Description2110-0817 Line Fuse2110-0780 Current Fu

124 34410A/11A/L4411A Service Guide4 Disassembly and RepairParts List L4411AAgilent Part Number Description2110-0780 Current FuseL4411-61601 Cable, Di

125Agilent 34410A/11A/L4411A 6½ Digit MultimeterService GuideAgilent Technologies5BackdatingThis chapter contains information necessary to adapt this

126 34410A/11A/L4411A Service Guide5 Backdating

34410A/11A/L4411A Service Guide 13Contents1 Specifications 17DC Characteristics 19AC Characteristics 22Frequency and Period Characteristics 24Capacita

14 34410A/11A/L4411A Service GuideContents2Quick Start37Basic Multimeter Operations 38Preparing the Multimeter for Use 38Using the Front Panel 39Front

Contents34410A/11A/L4411A Service Guide 153 Calibration Procedures 57Agilent Technologies Calibration Services 58Calibration Interval 58Adjustment is

16 34410A/11A/L4411A Service GuideContents4 Disassembly and Repair 103Operating Checklist 104Types of Service Available 105Extended Service Contracts

17Agilent 34410A/11A/L4411A 6½ Digit MultimeterService GuideAgilent Technologies1SpecificationsDC Characteristics 19AC Characteristics 22Frequency and

18 34410A/11A/L4411A Service Guide1 SpecificationsThese specifications apply when using the 34410A/11A/L4411A multimeter in an environment that is fre

34410A/11A/L4411A Service Guide 19Specifications 1DC CharacteristicsAccuracy Specifications ( % of reading + % of range ) [1][ 1 ] Specifications are

2 34410A/11A/L4411A Service GuideNotices© Agilent Technologies, Inc. 2005 - 2007No part of this manual may be reproduced in any form or by any means (

20 34410A/11A/L4411A Service Guide1 SpecificationsPerformance Versus Integration Time – 60Hz (50Hz) Power line frequency[ 1 ] Resolution is defined as

34410A/11A/L4411A Service Guide 21Specifications 1DC VoltageMeasurement Method: Continuously integrating multi–slope IV10 VDC Linearity: 0.0002% of

22 34410A/11A/L4411A Service Guide1 SpecificationsAC CharacteristicsAccuracy Specifications ( % of reading + % of range ) [1][ 1 ] Specifications are

34410A/11A/L4411A Service Guide 23Specifications 1Voltage Transfer Accuracy ( typical )Frequency Error 10 Hz to 300 kHz (24 hour % of range + % of re

24 34410A/11A/L4411A Service Guide1 SpecificationsFrequency and Period CharacteristicsAccuracy Specifications ( % of reading ) [ 1, 3 ]Additional Erro

34410A/11A/L4411A Service Guide 25Specifications 1Frequency and PeriodMeasurement Type: Reciprocal–counting technique. AC–coupled input using the AC v

26 34410A/11A/L4411A Service Guide1 SpecificationsCapacitance CharacteristicsAccuracy Specifications ( % of reading + % of range ) [1][ 1 ] Specificat

34410A/11A/L4411A Service Guide 27Specifications 1 Additional 34411A/L4411A SpecificationsResolution See table on page 20Overall Bandwidt

28 34410A/11A/L4411A Service Guide1 SpecificationsMeasurement and System SpeedsDMM Measurements Speeds[1] Typical. Display off, ½ scale input signal,

34410A/11A/L4411A Service Guide 29Specifications 1Direct I/O Measurements [1] (any remote interface)Sustained maximum reading rate to I/O, 32–bit BINA

34410A/11A/L4411A Service Guide 3Safety InformationDo not defeat power cord safety ground fea-ture. Plug in to a grounded (earthed) outlet. Do not use

30 34410A/11A/L4411A Service Guide1 SpecificationsData From MemoryMaximum reading rate out of memory (Sample count 50000, trigger count 1, "FETC?

34410A/11A/L4411A Service Guide 31Specifications 1Remote Interfaces GPIB IEEE–488, 10/100Mbit LAN, USB 2.0 StandardLanguage SCPI – 1994.0, IEEE–488.2L

32 34410A/11A/L4411A Service Guide1 SpecificationsDimensions212.3363.240.9All dimensions are shown in millimetersL4411A

34410A/11A/L4411A Service Guide 33Specifications 1To Calculate Total Measurement ErrorThe multimeter's accuracy specifications are expressed in t

34 34410A/11A/L4411A Service Guide1 SpecificationsUnderstanding the " % of range " Error The range error compensates for inaccuracies that r

34410A/11A/L4411A Service Guide 35Specifications 1Interpreting Accuracy SpecificationsTransfer AccuracyTransfer accuracy refers to the error introduce

36 34410A/11A/L4411A Service Guide1 SpecificationsConfiguring for Highest Accuracy MeasurementsThe measurement configurations shown below assume that

37Agilent 34410A/11A/L4411A 6½ Digit MultimeterService GuideAgilent Technologies2Quick StartThis chapter gives you a quick overview of the 34410A/11A

38 34410A/11A/L4411A Service Guide2 Quick StartBasic Multimeter OperationsThis section introduces the basics of the 34410A/11A multimeter, and how to

34410A/11A/L4411A Service Guide 39Quick Start 2Using the Front PanelThis section introduces the 34410A/11A multimeter front panel.Front-Panel KeysThe

4 34410A/11A/L4411A Service GuideProtection LimitsThe Agilent 34410A/11A Digital Multimeter provides protection circuitry to prevent damage to the ins

40 34410A/11A/L4411A Service Guide2 Quick StartFront- Panel Display Shortcuts Direct front–panel shortcuts are provided for three commonly used displa

34410A/11A/L4411A Service Guide 41Quick Start 2Making Basic MeasurementsThis section introduces the many types of measurements that you can make with

42 34410A/11A/L4411A Service Guide2 Quick StartTo Measure DC VoltagePress to select the dc voltage function.• Ranges: 100 mV, 1 V, 10 V, 100 V, 1000

34410A/11A/L4411A Service Guide 43Quick Start 2To Measure DC CurrentPress to select the dc current function.• Ranges: 100 mA, 1 mA, 10 mA, 100 mA, 1

44 34410A/11A/L4411A Service Guide2 Quick StartTo Make a 2-Wire Resistance MeasurementPress to select the 2- wire resistance function.• Ranges: 100

34410A/11A/L4411A Service Guide 45Quick Start 2To Measure Frequency Press to select the frequency function.• Measurement band: 3 Hz to 300 kHz • Inp

46 34410A/11A/L4411A Service Guide2 Quick StartTo Measure CapacitancePress to select the capacitance function.• Ranges: 1 nF, 10 nF, 100 nF, 1 mF,

34410A/11A/L4411A Service Guide 47Quick Start 2To Make a 2-Wire Temperature MeasurementPress to select the temperature function. Then press and se

48 34410A/11A/L4411A Service Guide2 Quick StartTo Test Co nt in uit yPress to select the continuity function. • Test current source: 1 mA• Beeper T

34410A/11A/L4411A Service Guide 49Quick Start 2Other Basics of OperationThis section covers basic troubleshooting and general use.If the Multimeter Do

34410A/11A/L4411A Service Guide 5Additional NoticesWaste Electrical and Electronic Equipment (WEEE) Directive 2002/96/ECThis product complies with the

50 34410A/11A/L4411A Service Guide2 Quick StartTo Replace the Power-Line Fuse (34410A/11A)Remove power cord first. Then follow these steps:Verify that

34410A/11A/L4411A Service Guide 51Quick Start 2To Adjust the Carrying Handle (34410A/11A)To adjust the position, grasp the handle by the sides and pul

52 34410A/11A/L4411A Service Guide2 Quick StartYou must remove the carrying handle, and the front and rear rubber bumpers, before rack mounting an ins

34410A/11A/L4411A Service Guide 53Quick Start 2Calibration Operation (34410A/11A)From the front panel you can:• Read the calibration count• Read and s

54 34410A/11A/L4411A Service Guide2 Quick StartTo Read the Calibration MessageThe instrument allows you to store a message in calibration memory. For

34410A/11A/L4411A Service Guide 55Quick Start 2To Secure for CalibrationThis feature allows you to enter a security code to prevent accidental or unau

56 34410A/11A/L4411A Service Guide2 Quick StartTo Unsecure for CalibrationBefore you can adjust the instrument, you must unsecure it by entering the c

57Agilent 34410A/11AL4411A 6½ Digit MultimeterService GuideAgilent Technologies3Calibration ProceduresAgilent Technologies Calibration Services 58Cali

58 34410A/11A/L4411A Service Guide3 Calibration ProceduresAgilent Technologies Calibration Services Agilent Technologies offers calibration services a

34410A/11A/L4411A Service Guide 59Calibration Procedures 3Time Required for Calibration The instrument can be automatically calibrated under computer

6 34410A/11A/L4411A Service GuideDECLARATION OF CONFORMITY According to EN ISO/IEC 17050-1:2004 Manufacturer’s Name: Agilent Technologies, Incorporat

60 34410A/11A/L4411A Service Guide3 Calibration ProceduresRecommended Test Equipment The test equipment recommended for the performance verification a

34410A/11A/L4411A Service Guide 61Calibration Procedures 3Self–Te s t A brief power–on self–test occurs automatically whenever you turn on the instrum

62 34410A/11A/L4411A Service Guide3 Calibration ProceduresIf the instrument fails the quick performance check, adjustment or repair is required. Perfo

34410A/11A/L4411A Service Guide 63Calibration Procedures 3Test Considerations Errors may be induced by ac signals present on the input leads during a

64 34410A/11A/L4411A Service Guide3 Calibration ProceduresVerification Tests Zero Offset Verification This procedure is used to check the zero offset

34410A/11A/L4411A Service Guide 65Calibration Procedures 3[1] Select 100 NPLC. [2] Specifications are for 4–wire Ohms function or 2–wire Ohms function

66 34410A/11A/L4411A Service Guide3 Calibration ProceduresGain Verification This procedure is used to check the “full scale” reading accuracy of the i

34410A/11A/L4411A Service Guide 67Calibration Procedures 3DC Current Gain Verification Test 1 Make sure you have read “Test Considerations” on page 63

68 34410A/11A/L4411A Service Guide3 Calibration ProceduresOhms Gain Verification TestConfiguration: 4–Wire Ohms (CONFigure:FRESistance)1 Make sure you

34410A/11A/L4411A Service Guide 69Calibration Procedures 3Frequency Gain Verification Test Configuration: Frequency (CONFigure:FREQuency DEF, MIN)1 M

34410A/11A/L4411A Service Guide 7Agilent 34410A/11A/L4411A at a GlanceThe Agilent 34410A, 34411A, or L4411A multimeter provides 6½- digit, high- perfo

70 34410A/11A/L4411A Service Guide3 Calibration ProceduresAC Volts Verification Test Configuration: AC Volts (CONFigure[:VOLTage]:AC)LF 3 HZ:SLOW ([SE

34410A/11A/L4411A Service Guide 71Calibration Procedures 3AC Current Verification TestConfiguration: AC Current (CONFigure:CURRent:AC)LF 3 HZ:SLOW ([S

72 34410A/11A/L4411A Service Guide3 Calibration ProceduresAdditional AC Voltage Performance Verification Tests Configuration: AC Volts (CONFigure[:VOL

34410A/11A/L4411A Service Guide 73Calibration Procedures 3Additional AC Current Performance Verification TestsConfiguration: AC Current (CONFigure:CUR

74 34410A/11A/L4411A Service Guide3 Calibration ProceduresAdditional Capacitance Performance Verification TestsConfiguration: Capacitance CONFigure:CA

34410A/11A/L4411A Service Guide 75Calibration Procedures 3Calibration Security This feature allows you to enter a security code to prevent accidental

76 34410A/11A/L4411A Service Guide3 Calibration Procedures1 Disconnect the power cord and all input connections.2 Disassemble the instrument using the

34410A/11A/L4411A Service Guide 77Calibration Procedures 3Calibration MessageThe instrument allows you to store a message in calibration memory. For e

78 34410A/11A/L4411A Service Guide3 Calibration ProceduresCalibration Process The following general procedure is the recommended method to complete a

34410A/11A/L4411A Service Guide 79Calibration Procedures 3Using the Remote Interface for AdjustmentsAll adjustments can be made using the remote inter

8 34410A/11A/L4411A Service GuideThe Front Panel at a GlanceWARNINGFront/Rear Switch: Do not change the position of the Front/Rear switch on the front

80 34410A/11A/L4411A Service Guide3 Calibration ProceduresAdjustmentsYou will need a test input cable and connectors set and a low thermal input short

34410A/11A/L4411A Service Guide 81Calibration Procedures 3Adjust the ADC 3 34410A/11A: Select the front panel input terminals. If using a single short

82 34410A/11A/L4411A Service Guide3 Calibration ProceduresGain Adjustments The instrument calculates and stores gain corrections for each input value.

34410A/11A/L4411A Service Guide 83Calibration Procedures 3Valid Gain and Flatness Adjustment Input Values. Gain adjustment can be accomplished using

84 34410A/11A/L4411A Service Guide3 Calibration ProceduresDC Voltage Gain Calibration ProcedureReview the “Test Considerations” on page 63 and “Gain A

34410A/11A/L4411A Service Guide 85Calibration Procedures 3Input Instrument Settings Voltage Function Range100 mV DC Volts 100 mV–100 mV 100 mV1 V 1 V

86 34410A/11A/L4411A Service Guide3 Calibration ProceduresDC Current Gain Calibration ProcedureReview the “Test Considerations” on page 63 and “Gain A

34410A/11A/L4411A Service Guide 87Calibration Procedures 3AC Voltage Gain Calibration ProcedureReview the ““Test Considerations” on page 63 and “Gain

88 34410A/11A/L4411A Service Guide3 Calibration Procedures6 Verify the AC Voltage Gain adjustments using the verification procedures beginning on page

34410A/11A/L4411A Service Guide 89Calibration Procedures 3adjustment value to correct the problem and repeat the adjustment step.4 Repeat steps 1 thro

34410A/11A/L4411A Service Guide 9The Rear Panel at a GlanceWARNINGFor protection from electrical shock, the power cord ground must not be defeated. Fo

90 34410A/11A/L4411A Service Guide3 Calibration ProceduresOhms Gain Calibration ProcedureReview the “Test Considerations” on page 63 and “Gain Adjustm

34410A/11A/L4411A Service Guide 91Calibration Procedures 3Input Instrument SettingsResistance Function Range100 Ω 4–Wire Ohms 100 Ω1 kΩ 1 kΩ10 kΩ 10 k

92 34410A/11A/L4411A Service Guide3 Calibration ProceduresFrequency Gain Calibration ProcedureReview the “Test Considerations” on page 63 and “Gain Ad

34410A/11A/L4411A Service Guide 93Calibration Procedures 3Flatness Adjustments The instrument stores new flatness correction constants each time this

94 34410A/11A/L4411A Service Guide3 Calibration ProceduresAC Voltage Low Frequency Flatness Calibration ProcedureReview the “Test Considerations” on p

34410A/11A/L4411A Service Guide 95Calibration Procedures 3AC Voltage Flatness Calibration ProcedureReview the “Test Considerations” on page 63 and “Fl

96 34410A/11A/L4411A Service Guide3 Calibration ProceduresInput InstrumentVrms Frequency Range100 mV 1 kHz 100 mV 5 kHz 10 kHz 20 kHz 35 kHz 50 kHz

34410A/11A/L4411A Service Guide 97Calibration Procedures 3Input InstrumentVrms Frequency Range1 V 1 kHz 1 V 5 kHz 10 kHz 20 kHz 35 kHz 50 kHz 75 kH

98 34410A/11A/L4411A Service Guide3 Calibration ProceduresInput InstrumentVrms Frequency Range10 V 1 kHz 10 V 5 kHz 10 kHz 20 kHz 35 kHz 50 kHz 75

34410A/11A/L4411A Service Guide 99Calibration Procedures 3Input InstrumentVrms Frequency Range50 V 1 kHz 100 V 5 kHz 10 kHz 20 kHz 35 kHz 50 kHz 75