Keysight Technologies U1273A Manuale utente

Keysight U1273A/

U1273AX Handheld

Digital Multimeter

Quick Start

Guide

Contacting Keysight

www.keysight.com/find/assist

(worldwide contact information for

repair and service)

Safety and EMC Information

This meter is safety-certified in

compliance with EN/IEC 61010-1,

ANSI/UL 61010-1/61010-2-033,

and CAN/CSA-C22.2 No. 61010-1/

61010-2-033 for CAT III 1000 V/

CAT IV 600 V pollution degree 2

environment.

EMC is designed in compliance

with IEC 61326-1/EN 61326-1. Use

with standard or compatible test

probes.

Safety Notices

CAUTION

A CAUTION notice denotes a

hazard. It calls attention to an

operating 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

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.

Safety symbols

Earth (ground) terminal

Equipment protected

throughout by double

insulation or reinforced

insulation

Caution, risk of electric

shock

Caution, risk of danger

(refer to this manual for

specific Warning or Caution

information)

Fuse

Alternating current

Direct current

Battery, general

Category III 1000 V

overvoltage protection

Category IV 600 V

overvoltage protection

CAT III

1000 V

CAT IV

600 V

2 Keysight U1273A/U1273AX Quick Start Guide

For further safety information details, refer to the

Keysight U1273A/U1273AX Handheld Digital Multimeter User’s Guide.

ENGLISH

Keysight U1273A/U1273AX Quick Start Guide 3

ENGLISH

Verify that you received the following items in the

shipment of your multimeter:

4Standard test leads

4Test probes with 4 mm tips

4K-type thermocouple and adapter

44 x 1.5 V AAA alkaline batteries (for U1273A)

or lithium batteries (for U1273AX)

4Certificate of Calibration

If any item is missing or damaged, keep the

shipping materials and contact the nearest

Keysight Sales Office.

NOTE The descriptions and instructions in this guide apply

to the U1273A/U1273AX handheld digital

multimeter.

All related documents and software are available for

download at www.keysight.com/find/hhTechLib.

4 Keysight U1273A/U1273AX Quick Start Guide

ENGLISH

Install the Batteries

Your multimeter is powered by four 1.5 V AAA

batteries (included with the shipment).

1Turn the rotary switch to OFF

and remove the test leads

from the terminals.

2Lift the tilt stand and loosen

the screws with a suitable

Phillips screwdriver.

3Remove the battery cover and observe the

polarity markings.

4Insert the batteries and replace the battery

cover and screws.

Turn On the Multimeter

To power ON your multimeter, turn the rotary

switch from the OFF position to any other

position.

NOTE

Your multimeter is capable of remote data logging.

To use this feature, you will need an IR-USB cable

(U1173A, purchased separately) and the Keysight

GUI Data Logger Software (downloadable from

www.keysight.com/find/hhTechLib).

Keysight U1273A/U1273AX Quick Start Guide 5

ENGLISH

Auto Dim

By default, the multimeter’s Auto Dim function is

enabled. The multimeter’s backlight will dim

automatically after 90 seconds of inactivity. Press

any button to cancel this effect and reset the Auto

Dim timer.

You may change how the multimeter’s backlight

behavior through the Setup menu. Refer to the

User’s Guide for further instructions.

6 Keysight U1273A/U1273AX Quick Start Guide

ENGLISH

The Multimeter at a Glance

Display screen

Keypad

Rotary switch

Input terminals

Test lead/probe holders

IR communication port

Battery cover

Tilt stand

(Lift tilt stand for access)

Keysight U1273A/U1273AX Quick Start Guide 7

ENGLISH

Understanding the Rotary Switch

NOTE

Press to switch between the primary and

shifted functions shown on the rotary switch.

Shift

View

Esc

Legend Description

ZLOW (low input impedance) AC/DC V for eliminating ghost

voltages

Off

AC V

AC V with Low Pass Filter

AC mV

AC mV with Low Pass Filter

DC V

AC V or AC+DC V

DC mV

AC mV or AC+DC mV

Resistance

Continuity or Smart Ω(offset compensation)

Diode

Auto-diode

Capacitance

Temperature

DC mA (or A)

AC mA (or A) or AC+DC mA (or A)

DC μA

AC μAor AC+DC μA

LOW

Smart

Auto

8 Keysight U1273A/U1273AX Quick Start Guide

ENGLISH

Understanding the Keypad

Legend Key response when pressed for:

Less than 1 second More than 1 second

Sets the Null/Relative mode. Sets the Scale mode for the

specified ratio and unit display.

Starts the MaxMin recording. Starts and stops the Peak

recording.

Freezes the present reading in

the display.

Automatically freezes the

present reading once the

reading is stable.

Switches between available

dual-combination displays.

Exits the Hold, Null, MaxMin,

Peak, frequency test, and dual

display modes.

Increases the OLED brightness

incrementally when LOW,

MEDIUM, or HIGH setting is

selected.

Enters and exits the

multimeter’s Setup menu.

Switches between frequency,

pulse width, and duty cycle

measurements.

Starts and stops the Data

Logging.

Sets a manual range and

disables autoranging. Enables auto-ranging.

Switches between the primary

and shifted functions.

Enters and exits the Log

Review menu.

Scale

Null

Peak

MaxMin

Auto

TrigHold

Exit

Dual

Setup

Hz%ms

Log

Auto

Range

Shift

View

Esc

Keysight U1273A/U1273AX Quick Start Guide 9

ENGLISH

Understanding the Input Terminals

WARNING

Ensure that the terminal connections are correct for

that particular measurement function before starting

any measurement. To avoid damage to the device, do

not exceed the input limit.

Rotary position Input terminals Overload protection

1000 Vrms

1000 Vrms for short

circuit <0.3 A

11 A/1000 V

fast-acting fuse

440 mA/1000 V

fast-acting fuse

LOW

Smart

Auto

10 Keysight U1273A/U1273AX Quick Start Guide

ENGLISH

Performing Measurements and Tests

Voltage measurements

The figure below highlights the primary functions

allowing voltage measurements in your

multimeter.

Set up your multimeter as shown in the figure

below to perform voltage measurements. When

measuring DC voltage from a mixed signal in DC

measurement mode, ensure that the Filter ( ) is

enabled.

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