Agilent Technologies U1231A Bedienungsanleitung

Agilent Technologies

Agilent U1231A, U1232A,

and U1233A Handheld

Digital Multimeter

Service Guide

II U1231A/U1232A/U1233A 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

U1231-90035

Edition

Fourth Edition, May 4, 2012

Agilent Technologies, Inc.

5301, Stevens Creek Blvd.

Santa Clara, CA 95051 USA

Warranty

The material contained in this document is

provided “as is,” and is subject to change,

without notice, in future editions. Further,

to the maximum extent permitted by the

applicable law, Agilent disclaims all war-

ranties, either express or implied, with

regard to this manual and any information

contained herein, including but not limited

to the implied warranties of merchantabil-

ity and fitness for a particular purpose.

Agilent shall not be liable for errors or for

incidental or consequential damages in

connection with the furnishing, use, or

performance of this document or of any

information contained herein. Should Agi-

lent 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 separate 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 likes

of that, if not correctly performed

or adhered to, could result in dam-

age to the product or loss of impor-

tant 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 likes of that, if not correctly

performed or adhered to, could

result in personal injury or death.

Do not proceed beyond a WARN-

ING notice until the indicated

conditions are fully understood

and met.

U1231A/U1232A/U1233A 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.

DC (Direct current or voltage)

AC (Alternating current or voltage)

Earth (ground) terminal

Caution, risk of danger (refer to this manual for specific Warning

or Caution information)

Equipment protected throughout by

double insulation or reinforced

insulation

Category III 600 V overvoltage protection

CAT III

600 V

IV U1231A/U1232A/U1233A Service Guide

Safety Considerations

Read the information below before using this instrument.

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 for design, manufacture, and intended

use of the instrument. Agilent Technologies assumes no liability for the

customer’s failure to comply with these requirements.

CAUTION

•Disconnect circuit power and discharge all high-voltage capacitors

before testing resistance, continuity, diodes, or capacitance.

•Use the proper terminals, function, and range for your

measurements.

•This device is for use at altitudes of up to 2,000 m.

•Never measure voltage when current measurement is selected.

•Always use the specified battery type. The power for the meter is

supplied with four standard AAA 1.5 V batteries. Observe the

correct polarity markings before you insert the batteries to ensure

proper insertion of the batteries in the meter.

•To avoid damage to the instrument from battery leakage:

•Always remove dead batteries immediately.

•Always remove the batteries and store them separately if the

instrument is not going to be used or is being stored for a long

period of time.

WARNING

• Do not use the meter if it is damaged. Before you use the meter,

inspect the case. Look for cracks or missing plastic. Pay

particular attention to the insulation surrounding the connectors.

• Inspect the test leads for damaged insulation or exposed metal.

Check the test leads for continuity. Replace damaged test leads

before you use the meter.

U1231A/U1232A/U1233A Service Guide V

WARNING

• Do not operate the meter around explosive gas, vapor, or wet

environments.

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

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

• Never use the meter in wet conditions or when there is water on

the surface. If the meter is wet, ensure that the meter is dried only

by trained personnel.

• Before use, verify the meter's operation by measuring a known

voltage.

• When measuring current, turn off the circuit power before

connecting the meter in the circuit. Remember to place the meter

in series with the circuit.

• When servicing the meter, use only the specified replacement

parts.

• Use caution when working above 60 V DC, 30 V AC rms, or 42.4 V

peak. Such voltages pose a shock hazard.

• Do not use the VZLOW (low input impedance) function to measure

voltages in circuits that could be damaged by this function’s low

input impedance of 3 kΩ.

• When using the probes, keep your fingers behind the finger

guards on the probes.

• Connect the common test lead before you connect the live test

lead. When you disconnect the leads, disconnect the live test lead

first.

• Remove the test leads from the meter before you open the battery

cover.

• Do not operate the meter with the battery cover or portions of the

cover removed or loosened.

• To avoid false readings, which may lead to possible electric shock

or personal injury, replace the battery as soon as the low battery

indicator appears and flashes.

VI U1231A/U1232A/U1233A Service Guide

Environmental Conditions

This instrument is designed for indoor use and in an area with low

condensation. The table below shows the general environmental

requirements for this instrument.

Environmental conditions Requirements

Operating temperature Full accuracy from –10 °C to 55 °C

Operating humidity

Full accuracy up to 80% RH (relative

humidity) for temperature up to 30 °C,

decreasing linearly to 50% RH at 55 °C

Storage temperature –40 °C to 60 °C

Altitude Up to 2000 meters

Pollution degree Pollution degree II

NOTE

The U1231A/U1232A/U1233A Handheld Digital Multimeter complies with the

following safety and EMC requirements:

•EN 61010-1 (IEC 61010-1:2001) for CAT III 600 V

•ANSI/UL 61010-1:2004

•CAN/CSA-C22.2 No. 61010-1-04

•Commercial limits compliance with EN61326-1

U1231A/U1232A/U1233A Service Guide VII

Regulatory Markings

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 the Canadian

ICES-001.

Cet appareil ISM est confomre a la

norme NMB-001 du Canada.

This instrument complies with the

WEEE Directive (2002/96/EC) marking

requirement. This affixed product label

indicates that you must not discard

this electrical or electronic product in

domestic household waste.

The CSA mark is a registered

trademark of the Canadian Standards

Association.

This symbol indicates the time period

during which no hazardous or toxic

substance elements are expected to

leak or deteriorate during normal use.

Forty years is the expected useful life

of the product.

VIII U1231A/U1232A/U1233A Service Guide

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 or 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 as shown below.

Do not dispose in domestic household waste.

To return this unwanted instrument, contact your nearest Agilent Service

Centre, or visit

www.agilent.com/environment/product

for more information.

U1231A/U1232A/U1233A Service Guide IX

Declaration of Conformity (DoC)

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

Agilent website. You can search the DoC by its product model or

description at the web address below.

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.

X U1231A/U1232A/U1233A Service Guide

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