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Agilent TechnologiesAgilent U1241B and U1242B Handheld Digital MultimetersUser’s and Service Guide

X U1241B/U1242B User’s and Service GuideTHIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

U1241B/U1242B User’s and Service Guide XContentsContents1Getting Started1Introduction 2Checking the Shipping Contents 3The Front Panel at a Glance 4Ad

XI U1241B/U1242B User’s and Service GuideContents3 Default Setting Configurations 27 Setting Configurations 284 Service and Maintenance 31 General

ContentsU1241B/U1242B User’s and Service Guide XII6 Specifications and Characteristics 61DC Specifications 62AC Specifications 63Resistance Specificat

XIII U1241B/U1242B User’s and Service GuideContents

1Agilent TechnologiesU1241B and U1242B Handheld Digital MultimetersUser’s and Service Guide1Getting Started Introduction 2 Checking the Shipping Conte

2 U1241B/U1242B User’s and Service Guide1Getting Started IntroductionThe handheld digital multimeters’ key features are:• DC, AC voltage and current

Getting Started 1U1241B/U1242B User’s and Service Guide 3Checking the Shipping ContentsVerify that you have received the following items for the sta

4 U1241B/U1242B User’s and Service Guide1Getting Started The Front Panel at a GlanceFigure 1-1 Front panel of a U1241B and U1242B handheld digital mu

Getting Started 1U1241B/U1242B User’s and Service Guide 5The Annunciator at a GlanceTo view the full display, press and hold while turning the rot

II U1241B/U1242B User’s and Service GuideNotices© Agilent Technologies, Inc. 2009–2014No part of this manual may be reproduced in any form or by any

6 U1241B/U1242B User’s and Service Guide1Getting Started Analog Bar GraphWhen frequency is indicated on the primary display during voltage or current

Getting Started 1U1241B/U1242B User’s and Service Guide 7Table 1-4 Keypad descriptions and functionsTable 1-5 Features that can be accessed through

8 U1241B/U1242B User’s and Service Guide1Getting Started The Input Terminal at a GlanceFigure 1-5 Input terminal of a U1242B handheld digital multime

9Agilent TechnologiesU1241B and U1242B Handheld Digital MultimeterUser’s and Service Guide2

10 U1241B/U1242B User’s and Service Guide2 Features and Functions Measuring VoltageMeasuring DC Voltage

Features and Functions 2U1241B/U1242B User’s and Service Guide 11Measuring Current (< 440 mA)Measuring % Scale of 4 – 20 mA NOTEIf the measured v

12 U1241B/U1242B User’s and Service Guide2 Features and Functions Measuring Frequency Measuring Resistance and Testing ContinuityCAUTIONDisconnec

Features and Functions 2U1241B/U1242B User’s and Service Guide 13Testing Dio desNOTEPress button to select measurement range from 1 kW to 100 MW.C

14 U1241B/U1242B User’s and Service Guide2 Features and Functions Measuring CapacitanceMeasuring TemperatureCAUTIONDisconnect circuit power and d

Features and Functions 2U1241B/U1242B User’s and Service Guide 15If you are working in a varied environment, where ambient temperature is not consta

U1241B/U1242B User’s and Service Guide IIISafety SymbolsThe following symbols on the instrument and in the documentation indicate precautions which mu

16 U1241B/U1242B User’s and Service Guide2 Features and Functions Measuring Harmonic Ratio (U1242B)Using Switch CounterHarmonics ratio function i

Features and Functions 2U1241B/U1242B User’s and Service Guide 171 Remove the power on the contacts or switch before measured. 2 Press at positi

18 U1241B/U1242B User’s and Service Guide2 Features and Functions MinMax RecordingThe MinMax operation stores the maximum, minimum, and average i

Features and Functions 2U1241B/U1242B User’s and Service Guide 19Data Hold (Trigger Hold)The data hold function allows users to freeze the displayed

20 U1241B/U1242B User’s and Service Guide2 Features and Functions Null (Relative)The Null function subtracts a stored value from the present meas

Features and Functions 2U1241B/U1242B User’s and Service Guide 21Manual LoggingTo enable the Hand (manual) logging function, select the Hand logging

22 U1241B/U1242B User’s and Service Guide2 Features and Functions 3 Press (Log) for more than one second to exit this mode.Figure 2-6 Manual lo

Features and Functions 2U1241B/U1242B User’s and Service Guide 23Figure 2-7 Interval logging displayReviewing Logged Data1 Press (View) for more t

24 U1241B/U1242B User’s and Service Guide2 Features and Functions and display temperature T1, T2 and T1- T2 sequentially. 1 Press and hold (Scan

Features and Functions 2U1241B/U1242B User’s and Service Guide 25Alerts and Warning During Measurement Overload AlertThe multimeter provides an over

IV U1241B/U1242B User’s and Service GuideRegulatory MarkingsWaste Electrical and Electronic Equipment (WEEE) Directive 2002/96/ECThis instrument comp

26 U1241B/U1242B User’s and Service Guide2 Features and Functions THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

27Agilent TechnologiesU1241B and U1242B Handheld Digital MultimeterUser’s and Service Guide3 De

28 U1241B/U1242B User’s and Service Guide3 Default Setting ConfigurationsSetting Configurations1 Turn off the multimeter. 2 From OFF position, press

Default Setting Configurations 3U1241B/U1242B User’s and Service Guide 29Table 3-9 Available setting options in Setup modeMenu item Available setting

30 U1241B/U1242B User’s and Service Guide3 Default Setting Configurations[1] To activate the multimeter after it has auto power off, press any button

31Agilent TechnologiesU1241B and U1242B Handheld Digital MultimeterUser’s and Service Guide4 Service

32 U1241B/U1242B User’s and Service Guide4 Service and Maintenance General MaintenanceBesides the above hazard, dirt or moisture in the terminals can

Service and Maintenance 4U1241B/U1242B User’s and Service Guide 333 Lift and remove the battery cover.4 Replace the specified batteries, ensure t

34 U1241B/U1242B User’s and Service Guide4 Service and Maintenance 3 Gently remove the defective Fuse 1 by prying one end of the fuse and removing it

Service and Maintenance 4U1241B/U1242B User’s and Service Guide 357 Replace a new fuse of the same size and rating into the center of the fuse ho

U1241B/U1242B User’s and Service Guide VGeneral Safety InformationThe following general safety precautions must be observed during all phases of opera

36 U1241B/U1242B User’s and Service Guide4 Service and Maintenance When servicing, use the specified replacement parts only. The Table 4- 11 shows th

Service and Maintenance 4U1241B/U1242B User’s and Service Guide 37Returning Instrument for ServiceBefore shipping your instrument for repair or r

38 U1241B/U1242B User’s and Service Guide4 Service and Maintenance THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

39Agilent TechnologiesU1241B and U1242B Handheld Digital MultimeterUser’s and Service Guide5

40 U1241B/U1242B User’s and Service Guide5 Performance Tests and CalibrationCalibration OverviewClosed-case Electronic CalibrationThe multimeter feat

Performance Tests and Calibration 5U1241B/U1242B User’s and Service Guide 41Adjustment is RecommendedSpecifications are only guaranteed within the per

42 U1241B/U1242B User’s and Service Guide5 Performance Tests and CalibrationRecommended Test EquipmentThe test equipment recommended for the performa

Performance Tests and Calibration 5U1241B/U1242B User’s and Service Guide 43Basic Operating TestBasic Operating Test is used to test the basic operabi

44 U1241B/U1242B User’s and Service Guide5 Performance Tests and CalibrationInput-A Terminal TestThis test determines if the input warning of the A c

Performance Tests and Calibration 5U1241B/U1242B User’s and Service Guide 45Test ConsiderationsError may be induced by AC signals that present on the

VI U1241B/U1242B User’s and Service GuideWARNING• Inspect the test probes for damaged insulation or exposed metal, and check for continuity. Do not u

46 U1241B/U1242B User’s and Service Guide5 Performance Tests and CalibrationInput ConnectionsTest connections to the multimeter are best accomplished

Performance Tests and Calibration 5U1241B/U1242B User’s and Service Guide 47Table 5-2 Verification TestsStep Test Function Range 5520A Output Error

48 U1241B/U1242B User’s and Service Guide5 Performance Tests and CalibrationStep Test Function Range 5520A Output Error from nominal 1 yearU1241B U

Performance Tests and Calibration 5U1241B/U1242B User’s and Service Guide 49[1] The accuracy of 1 kW and 10 kW are specified after Math Null, that is

50 U1241B/U1242B User’s and Service Guide5 Performance Tests and CalibrationCalibration SecurityThe calibration security code prevents accidental or

Performance Tests and Calibration 5U1241B/U1242B User’s and Service Guide 51Changing the Multimeter Calibration Security Code from the Front Panel1 Wh

52 U1241B/U1242B User’s and Service Guide5 Performance Tests and Calibrationerror code E03. Ensure that the last 4 digit serial number is entered cor

Performance Tests and Calibration 5U1241B/U1242B User’s and Service Guide 53Adjustment Considerations1 Allow the multimeter to warm up and stabilize f

54 U1241B/U1242B User’s and Service Guide5 Performance Tests and CalibrationValid Adjustment Input Values Adjustment can be accomplished using the fo

Performance Tests and Calibration 5U1241B/U1242B User’s and Service Guide 55Calibration Adjustments1 Turn the rotary switch to Test Function position,

U1241B/U1242B User’s and Service Guide VIIEnvironment ConditionsThis instrument is designed for indoor use, in areas with low condensation and to be u

56 U1241B/U1242B User’s and Service Guide5 Performance Tests and Calibration9 Turn the rotary switch to the next function according to the Test Funct

Performance Tests and Calibration 5U1241B/U1242B User’s and Service Guide 57Step Test Function Cal Range Input Cal ItemU1241B U1242B3 Turn the rotary

58 U1241B/U1242B User’s and Service Guide5 Performance Tests and CalibrationStep Test Function Cal Range Input Cal ItemU1241B U1242B6 Turn the rotar

Performance Tests and Calibration 5U1241B/U1242B User’s and Service Guide 59Exiting Adjustment Mode1 Remove all shorting plugs and connectors from the

60 U1241B/U1242B User’s and Service Guide5 Performance Tests and CalibrationCalibration Count The multimeter provides the calibration count informati

61Agilent TechnologiesU1241B and U1242B Handheld Digital MultimeterUser’s and Service Guide6

62 U1241B/U1242B User’s and Service Guide6 Specifications and CharacteristicsDC SpecificationsTable 6-6 DC specifications with accuracy of ± (% of re

Specifications and Characteristics 6U1241B/U1242B User’s and Service Guide 63AC SpecificationsTable 6-7 AC specifications with accuracy of ± (% of re

64 U1241B/U1242B User’s and Service Guide6 Specifications and CharacteristicsResistance SpecificationsTable 6-8 Resistance specifications with accura

Specifications and Characteristics 6U1241B/U1242B User’s and Service Guide 65Temperature SpecificationsTable 6-10 Temperature specifications with acc

VIII U1241B/U1242B User’s and Service GuideDeclaration of Conformity (DoC)The Declaration of Conformity (DoC) for this instrument is available on the

66 U1241B/U1242B User’s and Service Guide6 Specifications and CharacteristicsCapacitance SpecificationsTable 6-11 Capacitance specifications with acc

Specifications and Characteristics 6U1241B/U1242B User’s and Service Guide 67Frequency SpecificationsTable 6-13 Frequency specifications with accurac

68 U1241B/U1242B User’s and Service Guide6 Specifications and CharacteristicsOperating SpecificationsTable 6-14 Measuring rate of U1241B and U1242BFu

Specifications and Characteristics 6U1241B/U1242B User’s and Service Guide 69General CharacteristicsTable 6-15 General characteristics of U1241B and

70 U1241B/U1242B User’s and Service Guide6 Specifications and CharacteristicsWeight• 450 g with batteries• 400 g without batteriesWarranty • Please r

www.agilent.comAgilent Technologies© Agilent Technologies, Inc. 2009–2014Printed in MalaysiaTenth Edition, June 26, 2014U1241-90063Contact usTo obtain

U1241B/U1242B User’s and Service Guide IXIn This Guide…1Getting Started Chapter 1 introduces key features and steps to get started with a U1241B o