Agilent Technologies U3401A Manual de Serviço

Agilent TechnologiesAgilent U3401A 4 1/2 Digit Dual DisplayMultimeterUser’s and Service Guide

x U3401A User’s and Service GuideIn This Guide ...1 Getting Started This chapter provides an introduction to the U3401A digital multimeter and a tuto

6 Specifications and Characteristics 84 U3401A User’s and Service GuideDC SpecificationsTable 6 - 1 DCV resolution, full scale reading and accuracy [

Specifications and Characteristics 6 U3401A User’s and Service Guide 85AC SpecificationsTrue RMS AC VoltageTable 6 - 2 ACV resolution and full scale r

6 Specifications and Characteristics 86 U3401A User’s and Service GuideTrue RMS AC CurrentTable 6 - 3 ACI resolution, full scale reading, and burden

Specifications and Characteristics 6 U3401A User’s and Service Guide 87FrequencySensitivity for Voltage Measurement Sensitivity for Current Measuremen

6 Specifications and Characteristics 88 U3401A User’s and Service GuideDecibel (dB) CalculationTable 6 - 7 Range and accuracy (dB)Voltage range [1][2

Specifications and Characteristics 6 U3401A User’s and Service Guide 89Supplemental Measurement SpecificationsDisplay update rateMeasurement Specifica

6 Specifications and Characteristics 90 U3401A User’s and Service GuideDC current• Shunt resistance• 0.01 W to 100 W for 500 μA to 10 A ranges• Respo

Specifications and Characteristics 6 U3401A User’s and Service Guide 91AC voltage (True RMS AC + DC Coupling Mode)• Measurement method• AC+DC coupled

6 Specifications and Characteristics 92 U3401A User’s and Service GuideAC current (True RMS, AC Coupling Mode)• Measurement method• DC coupled to the

Specifications and Characteristics 6 U3401A User’s and Service Guide 93Resistance• Measurement method• 2-wire Ohms• Open-circuit voltage• Limited to +

U1253B User’s and Service Guide xi Contents1 Getting StartedIntroducing the Agilent U3401A Dual Display Multimeter 2Checking the shipping conten

6 Specifications and Characteristics 94 U3401A User’s and Service GuideFrequency• Measurement method• Reciprocal counting technique. AC coupled input

Specifications and Characteristics 6 U3401A User’s and Service Guide 95dBm Operation• 0 dBm• 1 mW at 600 Ω reference impedance• Resolution• 0.01 dB fo

6 Specifications and Characteristics 96 U3401A User’s and Service GuideReading ratesTable 6 - 10 Reading rates (reading/second (approx))Measurement f

Specifications and Characteristics 6 U3401A User’s and Service Guide 97General CharacteristicsTable 6 - 11 General Characteristics Power Supply• 100V/

6 Specifications and Characteristics 98 U3401A User’s and Service GuideStorage Compliance• – 20°C to 60°C• Relative humidity at 5% to 90% RH (non-con

Specifications and Characteristics 6 U3401A User’s and Service Guide 99To Calculate Total Measurement ErrorThe multimeter's accuracy specificatio

6 Specifications and Characteristics 100 U3401A User’s and Service GuideAccuracy SpecificationsTransfer AccuracyTransfer accuracy refers to the error

© Agilent Technologies, Inc. 2009–2013Printed in MalaysiaSeventh Edition, April 5, 2013U3401-90001www.agilent.comAgilent TechnologiesContact usTo obta

xii U1253B User’s and Service Guide Using the Secondary Display 41Using the Setup Menu 43Changing the Configurable Settings 44Trigger

U1253B User’s and Service Guide xiii To Replace a Current Input Fuse 74Electrostatic Discharge (ESD) Precautions 74Mechanical Disassembly

xiv U1253B User’s and Service Guide

U1253B User’s and Service Guide xv List of FiguresFigure 1-1 Stacking the U3401A 5Figure 1-2 Type of handle position 6Figure 1-3 Attac

xvi U1253B User’s and Service Guide Figure 3-3 Connection terminal when measuring AC Voltage and Frequency 53Figure 3-4 Connection terminal

U1253B User’s and Service Guide xvii List of TablesTab l e 1- 1 Display annunciators 9Tab l e 1- 2 Keypad functions 11Tab l e 1- 3

xviii U1253B User’s and Service Guide

1U3401A 4 ½ Digit Dual Display MultimeterUser’s and Service GuideAgilent Technologies1Getting StartedIntroducing the Agilent U3401A Dual Display Multi

ii U3401A User’s and Service GuideNotices© Agilent Technologies, Inc. 2009–2013No part of this manual may be reproduced in any form or by any means (i

1Getting Started 2 U3401A User’s and Service GuideIntroducing the Agilent U3401A Dual Display MultimeterThe key features of the U3401A dual display m

Getting Started 1 U3401A User’s and Service Guide 3Checking the shipping contentsVerify that you have received the following items with your multimete

1Getting Started 4 U3401A User’s and Service GuideConnecting power to the instrumentConnect the power cord and press the power switch to turn on the

Getting Started 1 U3401A User’s and Service Guide 5Stacking the U3401AThe U3401A is shipped with specially designed anti- slip protective bumpers on

1Getting Started 6 U3401A User’s and Service GuideAdjusting the HandleTo adjust the handle, grasp the handle by the side and pull outward. Then, rota

Getting Started 1 U3401A User’s and Service Guide 7Product at a GlanceProduct dimensionsFront viewSide viewFigure 1-4 U3401A dimensions226.0 mm105.0 m

1Getting Started 8 U3401A User’s and Service GuideThe front panel at a glance Figure 1-5 Front panel Measurement function keypadsMath operation ke

Getting Started 1 U3401A User’s and Service Guide 9The display at a glanceFigure 1-6 VFD full display with all segments illuminatedThe highly visible

1Getting Started 10 U3401A User’s and Service GuideAnnunciator DescriptionPolarity, digits, and decimal points for primary display°C Celcius temperat

Getting Started 1 U3401A User’s and Service Guide 11The keypad at a glance The operation for each key is shown on Table 1- 2. Pressing a key changes t

U3401A User’s and Service Guide iiiSafety SymbolsThe following symbol on the instrument and in the documentation indicates precautions that must be ta

1Getting Started 12 U3401A User’s and Service GuideKey DescriptionMeasurement related operation +Press to disable the secondary display.Press to sele

Getting Started 1 U3401A User’s and Service Guide 13Key DescriptionMeasurement related operationPress to select a lower range and disable autoranigng.

1Getting Started 14 U3401A User’s and Service GuideThe terminals at a glanceFigure 1-8 Input terminalsCAUTIONTo avoid damaging this multimeter, do no

Getting Started 1 U3401A User’s and Service Guide 15Table 1 - 3 Input terminal for different functionsMeasurement function Input terminal Overload pro

1Getting Started 16 U3401A User’s and Service GuideThe rear panel at a glanceFigure 1-9 Rear panelAC linevoltage selectorLine voltage fuseselection t

Getting Started 1 U3401A User’s and Service Guide 17Making measurementsThe following pages show you how to make measurement connections and how to sel

1Getting Started 18 U3401A User’s and Service GuidePerforming voltage measurementsAC voltage• Five ranges: 500.00 mV, 5.00 V, 50.00 V, 500.00 V, 750.

Getting Started 1 U3401A User’s and Service Guide 19DC Voltage• Five ranges: 500.00 mV, 5.00 V, 50.00 V, 500.00 V, 1000.00 V • Measurement method: Sig

1Getting Started 20 U3401A User’s and Service GuidePerforming current measurementsMeasuring AC (RMS) or DC Current in mA• Measurement ranges: 500.00

Getting Started 1 U3401A User’s and Service Guide 21Measuring AC (RMS) or DC Current up to 10 A• Measurement ranges:• 5.000 A, 10.000 A for DC or AC R

iv U3401A User’s and Service GuideRegulatory MarkingsThe CE mark shows that the product complies with all the relevant Euro-pean legal Directives (if

1Getting Started 22 U3401A User’s and Service GuidePerforming frequency measurements• Five ranges: • 500.00 mV, 5.0000 V, 50.000 V, 500.000 V, 750.00

Getting Started 1 U3401A User’s and Service Guide 23Performing resistance/continuity measurements• Six ranges: 500.00 W, 5.0000 kW, 50.000 kW, 500.00

1Getting Started 24 U3401A User’s and Service GuidePerforming diode and continuity TestThe diode test measures the forward voltage of a semiconductor

Getting Started 1 U3401A User’s and Service Guide 25• A diode is considered shorted if the multimeter displays approximately 0 V in both forward and r

1Getting Started 26 U3401A User’s and Service GuideSelecting a RangeYou can allow the multimeter to select the range automatically by using autorangi

Getting Started 1 U3401A User’s and Service Guide 27Table 1 - 4 Range scale valueMeasurement function Range Auto RangingDCV500.000 mV, 5.000 V, 50.000

1Getting Started 28 U3401A User’s and Service Guide

29U3401A 4 ½ Digit Dual Display MultimeterUser’s and Service GuideAgilent Technologies2Operations and FeaturesOperating Math Functions 30dBm 31R

2 Operations and Features 30 U3401A User’s and Service GuideOperating Math FunctionsTable 2- 1 presents a summary of the math operations that can be

Operations and Features 2 U3401A User’s and Service Guide 31dBmThe logarithmic dBm (decibels relative to one milliwatt) scale is often used in RF sign

U3401A User’s and Service Guide vGeneral Safety InformationThe following general safety precautions must be observed during all phases of operation, s

2 Operations and Features 32 U3401A User’s and Service GuideRelWhen making Rel (relative) measurements, each reading is the difference between a stor

Operations and Features 2 U3401A User’s and Service Guide 33MinMaxThe MinMax (Minimum/Maximum) operation stores the minimum and maximum values of read

2 Operations and Features 34 U3401A User’s and Service GuideThe elapsed time is recorded when the MinMax operation is selected. The elapsed time is s

Operations and Features 2 U3401A User’s and Service Guide 35CompThe Comp (compare) operation allows you to perform pass/fail testing against specified

2 Operations and Features 36 U3401A User’s and Service GuideProcedure1 Press to enter the upper limit setup mode. The upper limit is shown on pri

Operations and Features 2 U3401A User’s and Service Guide 37HoldThe reading hold feature allows you to capture and hold a reading on the front panel d

2 Operations and Features 38 U3401A User’s and Service Guide5 Press twice quit the Setup menu.6 Press to select refresh hold mode. The present va

Operations and Features 2 U3401A User’s and Service Guide 39Percentage (%)This operation allows you to transfer the measurement value with a proportio

2 Operations and Features 40 U3401A User’s and Service GuideProcedure1 Press to enter the upper limit setup mode. The upper limit is shown on pri

Operations and Features 2 U3401A User’s and Service Guide 41Using the Secondary DisplayFigure 2-9 Secondary display To enable the secondary display mo

vi U3401A User’s and Service GuideWARNING• Do not defeat power cord safety ground feature. Plug in to a grounded (earthed) outlet.• Do not use multime

2 Operations and Features 42 U3401A User’s and Service GuideTable 2 - 2 Description for dual display combinationPrimary DisplaySecondary DisplayDefau

Operations and Features 2 U3401A User’s and Service Guide 43Using the Setup MenuThe Setup menu allows you to customize a number of non- volatile instr

2 Operations and Features 44 U3401A User’s and Service GuideChanging the Configurable SettingsThe parameters in the Setup Menu can be configured by u

Operations and Features 2 U3401A User’s and Service Guide 45Trigger ModeThis multimeter has two types of trigger mode. • Internal — triggers measureme

2 Operations and Features 46 U3401A User’s and Service GuideNOTE• All math operations will be disabled when external trigger is enabled. • Press

49U3401A 4 ½ Digit Dual Display MultimeterUser’s and Service GuideAgilent Technologies3Application TutorialApplications for Using Dual Display 50Du

3 Application Tutorial 50 U3401A User’s and Service GuideApplications for Using Dual DisplayThe dual display feature in the multimeter can be used to

Application Tutorial 3 U3401A User’s and Service Guide 51Dual Display Operation ExamplesThis section describes some practical operations when using du

3 Application Tutorial 52 U3401A User’s and Service GuideMeasure AC and DC Current on a Rectification CircuitA single measurement for both AC current

Application Tutorial 3 U3401A User’s and Service Guide 53Measure AC Voltage and Frequency on an AC CircuitA single measurement for both AC voltage and

U3401A User’s and Service Guide viiEnvironmental ConditionsThis multimeter is designed for indoor use only. The table below shows the general environm

3 Application Tutorial 54 U3401A User’s and Service GuideMeasure Resistance1 Connect a resistor under test to and LO input terminals as shown in F

Application Tutorial 3 U3401A User’s and Service Guide 55Measure True RMS AC + DCThe multimeter can measure the true RMS of AC voltage and AC current.

3 Application Tutorial 56 U3401A User’s and Service Guide

57U3401A 4 ½ Digit Dual Display MultimeterUser’s and Service GuideAgilent Technologies4Performance TestCalibration Overview 58Agilent Technologies

4Performance Test 58 U3401A User’s and Service GuideCalibration OverviewAgilent Technologies Calibration ServicesWhen your instrument is due for cali

Performance Test 4 U3401A User’s and Service Guide 59Recommended Test EquipmentThe test equipments recommended for the performance verification proced

4Performance Test 60 U3401A User’s and Service GuideTest ConsiderationsFor optimum performance, all procedures should comply with the following recom

Performance Test 4 U3401A User’s and Service Guide 61Performance Verification Tests OverviewPerformance verification tests is an extensive set of test

4Performance Test 62 U3401A User’s and Service GuideDC Current Verification Test1 Connect the calibrator to the front panel Hi and Lo input connector

Performance Test 4 U3401A User’s and Service Guide 63Table 4 - 3 DC current verification testFunction Input Range Error from nominal one yearDC curren

viii U3401A User’s and Service GuideWaste Electrical and Electronic Equipment (WEEE) Directive 2002/96/ECThis instruction complies with the WEEE Direc

4Performance Test 64 U3401A User’s and Service GuideResistance Verification TestConfiguration: 2- Wire Ω1 Select the resistance function.2 Select eac

Performance Test 4 U3401A User’s and Service Guide 65Diode Verification TestConfiguration: Diode1 Connect the calibrator to the front panel Hi and Lo

4Performance Test 66 U3401A User’s and Service GuideAC Voltage Verification TestConfiguration: AC volts1 Select the AC voltage function.2 Select each

Performance Test 4 U3401A User’s and Service Guide 67AC Current Verification TestConfiguration: AC current1 Select the AC current function.2 Select ea

4Performance Test 68 U3401A User’s and Service Guide

69U3401A 4 ½ Digit Dual Display MultimeterUser’s and Service GuideAgilent Technologies5Disassembly and RepairOperating Checklist 70Types of Service

5 Disassembly and Repair 70 U3401A User’s and Service GuideOperating ChecklistBefore returning your multimeter to Agilent for service or repair check

Disassembly and Repair 5 U3401A User’s and Service Guide 71Types of Service AvailableIf your instrument fails during the warranty period, Agilent Tech

5 Disassembly and Repair 72 U3401A User’s and Service GuideRepackaging for ShipmentIf the instrument is to be shipped to Agilent for service or repai

Disassembly and Repair 5 U3401A User’s and Service Guide 73To Replace the Power Line FuseThe power line fuse is located within the multimeter’s fuse-

U3401A User’s and Service Guide ixDeclaration of Conformity (DoC)The Declaration of Conformity (DoC) for this instrument is available on the Website.

5 Disassembly and Repair 74 U3401A User’s and Service GuideTo Replace a Current Input FuseBoth the mA and the A current input terminals are fuse prot

Disassembly and Repair 5 U3401A User’s and Service Guide 75Mechanical DisassemblyFor procedures in this manual, the following tools are required for d

5 Disassembly and Repair 76 U3401A User’s and Service Guide3 Remove the instrument bumpers. Pull from a corner and stretch the bumpers off the instru

Disassembly and Repair 5 U3401A User’s and Service Guide 775 Remove the cover. Remove the screw in the bottom of the cover and slide the cover off the

5 Disassembly and Repair 78 U3401A User’s and Service Guide2 Remove the screw holding the front panel.3 Disconnect the two ribbon cable connectors fr

Disassembly and Repair 5 U3401A User’s and Service Guide 794 Disconnect the individual front panel wires shown below.5 There is now enough play to all

5 Disassembly and Repair 80 U3401A User’s and Service GuideFront Panel Disassembly1 Remove the keyboard and display assembly. Remove the two screws h

Disassembly and Repair 5 U3401A User’s and Service Guide 81Replaceable PartsThis section contains information for ordering replacement parts for your

5 Disassembly and Repair 82 U3401A User’s and Service Guide

83U3401A 4 ½ Digit Dual Display MultimeterUser’s and Service GuideAgilent Technologies6Specifications and CharacteristicsDC Specifications 84AC Spe