Keysight Technologies U1281A Manual de usuario

Keysight U1281A/U1282A

Handheld Digital Multimeter

User’s Guide

2Keysight U1281A/U1282A User’s Guide

Notices

No part of this manual may be repro-

duced in any form or by any means

(including electronic storage and

retrieval or translation into a foreign

language) without prior agreement and

written consent from Keysight Technol-

ogies as governed by United States and

international copyright laws.

Trademark

Bluetooth and the Bluetooth logos are

trademarks owned by Bluetooth SIG,

Inc., U.S.A. and licensed to Keysight

Technologies.

Manual Part Number

U1281-90003

Edition

Edition 02, February 2022

Printed in:

Printed in Malaysia

Published by:

Keysight Technologies

Bayan Lepas Free Industrial Zone,

11900 Penang, Malaysia

Technology Licenses

The hardware and/or software

described in this document are fur-

nished under a license and may be

used or copied only in accordance with

the terms of such license.

Declaration of Conformity

Declarations of Conformity for this

product and for other Keysight prod-

ucts may be downloaded from the

Web. Go to http://www.keysight.com/

go/conformity. You can then search by

product number to find the latest Dec-

laration of Conformity.

U.S. Government Rights

The Software is “commercial computer

software,” as defined by Federal Acqui-

sition Regulation (“FAR”) 2.101. Pursu-

ant to FAR 12.212 and 27.405-3 and

Department of Defense FAR Supple-

ment (“DFARS”) 227.7202, the U.S.

government acquires commercial com-

puter software under the same terms

by which the software is customarily

provided to the public. Accordingly,

Keysight provides the Software to U.S.

government customers under its stan-

dard commercial license, which is

embodied in its End User License

Agreement (EULA), a copy of which can

be found at http://www.keysight.com/

find/sweula. The license set forth in the

EULA represents the exclusive authority

by which the U.S. government may use,

modify, distribute, or disclose the Soft-

ware. The EULA and the license set

forth therein, does not require or per-

mit, among other things, that Keysight:

(1) Furnish technical information

related to commercial computer soft-

ware or commercial computer software

documentation that is not customarily

provided to the public; or (2) Relinquish

to, or otherwise provide, the govern-

ment rights in excess of these rights

customarily provided to the public to

use, modify, reproduce, release, per-

form, display, or disclose commercial

computer software or commercial com-

puter software documentation. No

additional government requirements

beyond those set forth in the EULA

shall apply, except to the extent that

those terms, rights, or licenses are

explicitly required from all providers of

commercial computer software pursu-

ant to the FAR and the DFARS and are

set forth specifically in writing else-

where in the EULA. Keysight shall be

under no obligation to update, revise or

otherwise modify the Software. With

respect to any technical data as

defined by FAR 2.101, pursuant to FAR

12.211 and 27.404.2 and DFARS

227.7102, the U.S. government

acquires no greater than Limited Rights

as defined in FAR 27.401 or DFAR

227.7103-5 (c), as applicable in any

technical data.

Warranty

THE MATERIAL CONTAINED IN THIS

DOCUMENT IS PROVIDED “AS IS,”

AND IS SUBJECT TO BEING

CHANGED, WITHOUT NOTICE, IN

FUTURE EDITIONS. FURTHER, TO THE

MAXIMUM EXTENT PERMITTED BY

APPLICABLE LAW, KEYSIGHT DIS-

CLAIMS ALL WARRANTIES, EITHER

EXPRESS OR IMPLIED, WITH REGARD

TO THIS MANUAL AND ANY INFORMA-

TION CONTAINED HEREIN, INCLUD-

ING BUT NOT LIMITED TO THE

IMPLIED WARRANTIES OF MER-

CHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE. KEYSIGHT

SHALL NOT BE LIABLE FOR ERRORS

OR FOR INCIDENTAL OR CONSE-

QUENTIAL DAMAGES IN CONNECTION

WITH THE FURNISHING, USE, OR

PERFORMANCE OF THIS DOCUMENT

OR OF ANY INFORMATION CON-

TAINED HEREIN. SHOULD KEYSIGHT

AND THE USER HAVE A SEPARATE

WRITTEN AGREEMENT WITH WAR-

RANTY TERMS COVERING THE MATE-

RIAL IN THIS DOCUMENT THAT

CONFLICT WITH THESE TERMS, THE

WARRANTY TERMS IN THE SEPARATE

AGREEMENT SHALL CONTROL.

Safety Information

CAUTION

A CAUTION notice denotes a hazard. It

calls attention to an operating proce-

dure, 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 pro-

ceed 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 proce-

dure, practice, or the like that, if not

correctly performed or adhered to,

could result in personal injury or death.

Do not proceed beyond a WARNING

notice until the indicated conditions are

fully understood and met.

Keysight U1281A/U1282A User’s Guide 3

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) Alternating current (AC)

Earth (ground) terminal Caution, risk of danger

(refer to this manual for specific

Warning or Caution information)

Category IV 600 V overvoltage

protection

Equipment protected throughout by

double insulation or reinforced

insulation

Category III 1000 V overvoltage

protection

CAT IV

600 V

CAT III

1000 V

4Keysight U1281A/U1282A User’s 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. Keysight Technologies assumes no

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

WARNING

– Do not exceed any of the measurement limits defined in the specifications to avoid

instrument damage and the risk of electric shock.

– Do not use the multimeter if it is damaged. Before you use the multimeter, 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 multimeter.

– Do not operate the multimeter around explosive gas, vapor, or wet environments.

– Do not apply more than the rated voltage (as marked on the multimeter) between

terminals, or between terminal and earth ground.

– Never use the multimeter in wet conditions or when there is water on the surface. If

the multimeter is wet, ensure that the multimeter is dried only by trained personnel.

– Before use, verify the multimeter’s operation by measuring a known voltage.

– When measuring current, turn off the circuit power before connecting the multimeter

in the circuit. Remember to place the multimeter in series with the circuit.

– When servicing the multimeter, 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.

– 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 multimeter before you open the battery cover.

– Do not operate the multimeter 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.

– Only probe assemblies with Measurement Category III or IV ratings should be used for

mains measurements.

Keysight U1281A/U1282A User’s Guide 5

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 multimeter is for use at altitudes of up to 3000 m.

– Never measure voltage when the current measurement is selected.

– Always use the specified battery type. The power for the multimeter is supplied with

four standard 1.5 V AA batteries. Observe the correct polarity markings before you

insert the batteries to ensure proper insertion of the batteries in the multimeter.

6Keysight U1281A/U1282A User’s Guide

Measurement Category

The U1281A/U1282A has a safety rating of CAT III, 1000 V and CAT IV, 600 V.

Measurement CAT I Measurements performed on circuits not directly connected to the

AC mains. Examples are measurements on circuits not derived from the AC mains and

specially protected (internal) mains-derived circuits.

Measurement CAT II Measurements performed on circuits directly connected to a

low-voltage installation. Examples are measurements on household appliances, portable

tools, and similar equipment.

Measurement CAT III Measurements performed in the building installation. Examples are

measurements on distribution boards, circuit- breakers, wiring, including cables, bus-bars,

junction boxes, switches, socket outlets in the fixed installation, and equipment for

industrial use, and some other equipment including stationary motors with permanent

connection to the fixed installation.

Measurement CAT IV Measurements performed at the source of the low-voltage

installation. Examples are electricity meters and measurements on primary overcurrent

protection devices and ripple control units.

Keysight U1281A/U1282A User’s Guide 7

Environmental Conditions

The U1281A/U1282A is designed for indoor use and in an area with low condensation. The

table below shows the general environmental requirements for this instrument.

Environmental condition Requirement

Temperature

Operating condition

– –20 °C to 55 °C, 0% to 80% RH (non-condensing)

Storage condition

– –40 °C to 70 °C, 0% to 80% RH (without batteries)

Humidity

Full accuracy up to 80% RH (relative humidity) for

temperature up to 30 °C, decreasing linearly to 50%

RH at 55 °C

Altitude Up to 3000 meters

Pollution degree 2

8Keysight U1281A/U1282A User’s Guide

Regulatory Information

The U1281A/U1282A complies with the following Electromagnetic Compatibility (EMC) and

safety compliances:

Safety compliance

– IEC 61010-1/EN61010-1, IEC 61010-2-030/EN61010-2-030, IEC61010-02-033/

EN61010-2-033

– Canada: CAN/CSA C22.2 No. 61010-1, CAN/CSA-C22.2 No.61010-2-030, CAN/

CSA-C22.2 No.61010-2-033

– USA: UL Std. No.61010-1, UL Std. No.61010-2-030, UL Std. No.61010-2-033

EMC compliance

– IEC 61326/EN 61326-1

– CISPR 11/EN55011, Group 1 Class A

– Canada: ICES/NMB-001

– Australia/New Zealand: AS/NZS CISPR 11

NOTE

Refer to Declaration of Conformity for current revisions. Go to http://www.keysight.com/

go/conformity for more information.

Keysight U1281A/U1282A User’s Guide 9

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.

ICES/NMB-001 indicates that this ISM device

complies with the Canadian ICES-001.

Cet appareil ISM est conforme a la norme

NMB-001 du Canada.

The CSA mark is a registered trademark of the

Canadian Standards Association.

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 RCM 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.

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.

This symbol is a South Korean Class A EMC

Declaration. This is a Class A instrument

suitable for professional use and in

electromagnetic environment outside of the

home.

10 Keysight U1281A/U1282A User’s 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 Keysight Service Center, or visit

http://about.keysight.com/en/companyinfo/environment/takeback.shtml for more

information.

Sales and Technical Support

To contact Keysight for sales and technical support, refer to the support links on the

following Keysight websites:

–www.keysight.com/find/U1281A

www.keysight.com/find/U1282A

(product-specific information and support, software and

documentation updates)

–www.keysight.com/find/assist

(worldwide contact information for repair and service)

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