Agilent Technologies U1241B Manual

Agilent Technologies

Agilent

U1241B and U1242B

Handheld Digital

Multimeters

User’s and Service Guide

II U1241B/U1242B User’s and Service Guide

Notices

No part of this manual may be reproduced in

any form or by any means (including elec-

tronic storage and retrieval or translation

into a foreign language) without prior agree-

ment and written consent from Agilent

Technologies, Inc. as governed by United

States and international copyright laws.

Manual Part Number

U1241-90063

Edition

First Edition, December 1, 2009

Printed in Malaysia

Agilent Technologies, Inc.

5301 Stevens Creek Blvd.

Santa Clara, CA 95051 USA

Warranty

The material contained in this docu-

ment is provided “as is,” and is sub-

ject to being changed, without notice,

in future editions. Further, to the max-

imum extent permitted by applicable

law, Agilent disclaims all warranties,

either express or implied, with regard

to this manual and any information

contained herein, including but not

limited to the implied warranties of

merchantability and fitness for a par-

ticular purpose. Agilent shall not be

liable for errors or for incidental or

consequential damages in connec-

tion with the furnishing, use, or per-

formance of this document or of any

information contained herein. Should

Agilent and the user have a separate

written agreement with warranty

terms covering the material in this

document that conflict with these

terms, the warranty terms in the sep-

arate agreement shall control.

Technology Licenses

The hardware and/or software described in

this document are furnished under a license

and may be used or copied only in accor-

dance with the terms of such license.

Restricted Rights Legend

U.S. Government Restricted Rights. Soft-

ware and technical data rights granted to

the federal government include only those

rights customarily provided to end user cus-

tomers. Agilent provides this customary

commercial license in Software and techni-

cal data pursuant to FAR 12.211 (Technical

Data) and 12.212 (Computer Software) and,

for the Department of Defense, DFARS

252.227-7015 (Technical Data - Commercial

Items) and DFARS 227.7202-3 (Rights in

Commercial Computer Software or Com-

puter Software Documentation).

Safety Notices

CAUTION

A CAUTION notice denotes a haz-

ard. It calls attention to an operat-

ing procedure, practice, or the like

that, if not correctly performed or

adhered to, could result in damage

to the product or loss of important

data. Do not proceed beyond a

CAUTION notice until the indicated

conditions are fully understood and

met.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

formed or adhered to, could result

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fully understood and

met.

U1241B/U1242B User’s and Service Guide III

Safety Symbols

The following symbols on the instrument and in the documentation

indicate precautions which must be taken to maintain safe operation of

the instrument.

Direct current (DC) Off (supply)

Alternating current (AC) On (supply)

Both direct and alternating current Caution, risk of electric shock.

Three-phase alternating current Caution, risk of danger (refer to this

manual for specific Warning or

Caution information).

Earth (ground) terminal Caution, hot surface.

Protective conductor terminal Out position of a bi-stable push

control.

Frame or chassis terminal In position of a bi-stable push

control.

Equipotentiality CAT III

1000 V

Category III 1000 V Overvoltage

Protection

Equipment protected throughout by

double insulation or reinforced

insulation.

CAT IV

600 V

Category IV 600 V Overvoltage

Protection

IV U1241B/U1242B User’s and Service Guide

Regulatory Markings

Waste Electrical and Electronic Equipment (WEEE) Directive

2002/96/EC

This instrument complies with the WEEE Directive (2002/96/EC) marking

requirement. This affixed product label indicates that you must not

discard this electrical/electronic product in domestic household waste.

Product Category:

With reference to the equipment types in the WEEE directive Annex 1,

this instrument is classified as a “Monitoring and Control Instrument”

product. The affixed product label is shown as below:

Do not dispose in domestic household waste

To return this unwanted instrument, contact your nearest Agilent office,

or visit:

www.agilent.com/environment/product

for more information.

The CE mark is a registered trademark

of the European Community.This CE

mark shows that the product complies

with all the relevant European Legal

Directives.

The C-tick mark is a registered trademark

of the Spectrum Management Agency of

Australia. This signifies compliance with

the Australia EMC Framework

regulations under the terms of the Radio

Communication Act of 1992.

ICES/NMB-001 indicates that this ISM

device complies with Canadian

ICES-001.

This instrument complies with the WEEE

Directive (2002/96/EC) marking

requirement. This affixed product label

indicates that you must not discard this

electrical/electronic product in domestic

household waste.

The CSA mark is a registered trademark

of the Canadian Standards Association.

U1241B/U1242B User’s and Service Guide V

General Safety Information

The following general safety precautions must be observed during all

phases of operation, service and repair of this instrument. Failure to

comply with these precautions or with specific warnings elsewhere in

this manual violates safety standards of design, manufacture and

intended use of the instrument. Agilent Technologies assumes no liability

for the customer’s failure to comply with these requirements.

WARNING

•Observe all markings on the instrument before connecting any

wiring to the instrument.

• When working above 60 VDC, 30 VAC RMS or 42 V peak, exercise

caution – such range pose a shock hazard.

• Do not measure more than the rated voltage (as marked on the

meter) between terminals, or between terminal and earth ground.

• Double-check the meter’s operation by measuring a known voltage.

• For current measurement, turn off circuit power before connecting

the meter to the circuit. Always place the meter in series with the

circuit.

• When connecting probes, always connect the common test probe

first. When disconnecting probes, always disconnect the live test

probe first.

• Detach test probes from the meter before you open the battery cover.

• Do not use the meter with the battery cover or part of the cover

removed or loose.

• Replace the battery as soon as the low battery indicator flashes

on screen. This is to avoid false readings, which may lead to possible

electric shock or personal injury.

• Do not operate the product in an explosive atmosphere or in the

presence of flammable gases or fumes.

• Inspect the case for cracks or missing plastic. Pay extra attention to

the insulation surrounding the connectors. Do not use the meter if it

is damaged.

• Inspect the test probes for damaged insulation or exposed metal,

and check for continuity. Do not use the test probe if it is damaged.

VI U1241B/U1242B User’s and Service Guide

WARNING

• Do not use repaired fuses or short-circuited fuse-holders. For

continued protection against fire, replace the line fuses only with

fuses of the same voltage and current rating and recommended type.

• Do not service or perform adjustments alone. Under certain

condition, hazardous voltages may exist, even with the equipment

switched off. To avoid dangerous electric shock, service personnel

must not attempt internal service or adjustment unless another

person, capable of rendering resuscitation or first aid, is present.

• Do not substitute parts or modify equipment to avoid the danger of

introducing additional hazards. Return the product to Agilent

Technologies Sales and Service Office for service and repair to

ensure the safety features are maintained

• Do not operate damaged equipment as the safety protection features

built into this product may have been impaired, either through

physical damage, excessive moisture, or any other reason. Remove

power and do not use the product until safe operation can be verified

by service-trained personnel. If necessary, return the product to

Agilent Technologies Sales and Service Office for service and repair

to ensure the safety features are maintained.

CAUTION

• Turn off circuit power and discharge all high-voltage capacitors in the

circuit before you perform resistance, continuity, diodes, or

capacitance tests.

• Use the correct terminals, function, and range for your measurements.

• Never measure voltage when current measurement is selected.

• Ensure proper insertion of battery in the meter, and follow the correct

polarity.

U1241B/U1242B User’s and Service Guide VII

Environment Conditions

This instrument is designed for indoor use, in areas with low condensation

and to be used with standard or compatible test probes.

Environment Conditions Requirements

Operating environment Full accuracy at –10 °C to 55 °C

Operating relative humidity Full accuracy up to 80% RH for

temperature up to 30 °C, decreasing

linearly to 50% RH at 55 °C

Storage environment –20 °C to 70 °C

Altitude 0 – 2000 meters per IEC 61010-1 2nd

Edition CAT III, 1000 V/ CAT IV, 600 V

Pollution Degree Pollution Degree II

CAUTION

The Agilent U1241B and U1242B are safety-certified in compliance with

the following safety and EMC requirements:

• IEC 61010-1:2001 / EN61010-1:2001

• USA: UL 61010-1:2004

• Canada: CSA C22.2 No. 61010-1:2004

• IEC 61326-1:2005/ EN 61326-1:2006

• Canada: ICES/NMB-001:2004

• Australia/New Zealand: AS/NZS CISPR11:2004

VIII U1241B/U1242B User’s and Service Guide

Declaration of Conformity (DoC)

The Declaration of Conformity (DoC) for this instrument is available on the

Web site. You can search the DoC by its product model or description.

http://regulations.corporate.agilent.com/DoC/search.htm

NOTE

If you are unable to search for the respective DoC, please contact your

local Agilent representative.

U1241B/U1242B User’s and Service Guide IX

In This Guide…

1 Getting Started Chapter 1 introduces key features and steps to get

started with a U1241B or U1242B handheld digital multimeter. This

chapter also guides you through the basics of the front panel operations.

2 Features and Functions Chapter 2 contains the information on how to

set up connections to perform meter measurements. It also describes the

features and functions that are available in the U1241B and U1242B

handheld digital multimeters in step-by-step instructions.

3 Default Setting Configurations Chapter 3 describes on how to

change and configure the default setting of the U1241B and U1242B

handheld digital multimeters including data logging and other setting

features

4Service and Maintenance Chapter 4 provides the information on the

warranty, services, maintenance procedures and troubleshooting hints to

solve general problems that you may encounter with the meter.

5Performance Tests and Calibration Chapter 5 contains the

procedures of the performance verification tests and calibration

adjustments.

6Specifications and Characteristics Chapter 6 lists the specifications

and characteristics of the U1241B and U1242B handheld digital

multimeters.

X U1241B/U1242B User’s and Service Guide

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