Keysight Technologies U1401B User manual

Keysight U1401B

Handheld Multi-Function

Calibrator/Meter

Quick Start

Guide

2 Keysight U1401B Quick Start Guide

Contacting Keysight

www.keysight.com/find/assist

(worldwide contact information for

repair and service)

Safety Information

This instrument is safety and EMC

certified in compliance with:

– IEC 61010-1:2001/

EN61010-1:2001 (2nd Edition)

– Canada: CAN/CSA-C22.2 No.

61010-1-04

– USA: ANSI/UL 61010-1:2004

– IEC61326-2-1:2005/

EN61326-2-1:2006

– Canada: ICES-001:2004

– Australia/New Zealand: AS/NZS

CISPR11:2004

Measurement Category II 150 V,

Pollution Degree 2. 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

Double insulation

Caution, risk of electric

shock

Caution, risk of danger

Category II 150 V

overvoltage protection

CAT II

150 V

2 Keysight U1401B Quick Start Guide

For further safety information details, refer to the

Keysight U1401B Handheld Multi-Function Calibrator/Meter User’s Guide.

ENGLISH

Keysight U1401B Quick Start Guide 3

ENGLISH

The following items are included with your

multimeter:

✔Protective holster

✔Rechargeable battery pack (1.2 V NiMH AA

✔Power cord and AC power adapter

✔Silicone test leads, alligator clips, and a

yellow test lead for mA simulation

✔Certificate of calibration

✔Printed Quick Start Guide

If anything is missing or damaged, please contact

the nearest Keysight Sales Office.

NOTE

Your multimeter is capable of remote data logging.

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

(U5481A, purchased separately) and the Keysight

GUI Data Logger Software (downloadable from

www.keysight.com/find/hhTechLib).

WARNING

Ensure the terminal connections are correct for that

particular measurement selection before starting any

measurement. To avoid damage to the device, do not

exceed the input limit.

4 Keysight U1401B Quick Start Guide

ENGLISH

Recharging the Batteries

Charge the batteries immediately when the low

battery annunciator starts flashing. It is strongly

recommended that you use only the specified

type of 24 V AC adapter to charge these

rechargeable batteries.

1Power down the instrument and disconnect

all the test leads from the terminals.

2Plug the AC adapter into the jack on the side

panel.

3Set the slide switch at the CHARGE position.

4The red light indicates that the batteries are

being recharged.

5When the batteries have been fully recharged,

the green light turns on. Remove the AC

adapter and set the slide switch at the Mor

M/S position.

Set slide switch at the

CHARGE position

Charging indication

Green: Fully charged

Red: Charging

External AC

adapter jack

Keysight U1401B Quick Start Guide 5

ENGLISH

WARNING

Do not discharge a battery by shorting it or subjecting

it to reverse polarity. Do not mix different types of

battery. Make sure a battery is rechargeable before

charging it.

CAUTION

Do not turn the rotary switch while the instrument is

being recharged because a DC 24 V supply is

applied to the charging terminal.

6 Keysight U1401B Quick Start Guide

ENGLISH

Functions and Features

Action Steps

Selects AC, DC, or AC+DC

measurement Press

Toggles peak hold mode on and off Press and hold for > 1 s

Freezes the measured value With data hold mode enabled, press

. Press and hold for > 1 s

to exit.

Enters or exits the refresh hold mode With refresh hold mode enabled, press

Enters or exits the dynamic recording

mode Press and hold for > 1 s

Offsets the measured value Press

Selects the measurement range Press

Turns on autorange Press and hold for > 1 s

Turns on dual display Press

Turns on the frequency measurement

function Press

Enables the shifted functions of the

keypad

Press

Toggles the backlight on or off Press and hold for > 1 s

Selects output mode and range for

voltage and current output With rotary switch at or , and

with mode enabled, press

Keysight U1401B Quick Start Guide 7

ENGLISH

Action Steps

Selects parameter adjustments for

square wave output With rotary switch at , and with

mode enabled, press

Selects a digit or the polarity to be

adjusted With mode enabled, press

Adjusts a digit or the polarity With mode enabled, press

Toggles the output state on and off With mode enabled, press

8 Keysight U1401B Quick Start Guide

ENGLISH

Input/Output Terminals and Overload

Protection

The output terminals are protected with DC 30 V

overload protection. The overload protection

limits of the input terminals are shown in the table

below.

Functions Overload Protection

AC/DC voltage measurement 250 Vrms

Resistance measurement and continuity test

Temperature measurement

AC/DC current measurement 250 V/630 mA, fast-acting fuse

Keysight U1401B Quick Start Guide 9

ENGLISH

Charging the battery

A new rechargeable battery comes in a discharged

condition and must be charged before use (refer to

the U1401B User’s and Service Guide for charging

instructions). Upon initial use (or after a prolonged

storage period) the rechargeable battery may

require three to four charge/discharge cycles

before achieving maximum capacity. To discharge,

simply run the multimeter using the rechargeable

battery’s power until it shuts down or until the low

battery warning appears.

In some instances, the multimeter may indicate

that the charging is complete after ten minutes or

so when charging a new rechargeable battery.

This is a normal phenomenon with rechargeable

batteries. Remove the rechargeable battery from

the device, re-insert it and repeat the charging

procedure.

10 Keysight U1401B Quick Start Guide

ENGLISH

Performing Voltage Measurements

Measuring AC voltage

1Set the rotary switch to Vor mV. Press

to select .

2Connect the red (+) and black (–) test leads to

the INPUT terminals.

3Probe the test points and read the display.

4Press to display dual measurements.

Measuring DC voltage

1Set the rotary switch to Vor mV. Press

to select .

2Connect the red (+) and black (–) test leads to

the INPUT terminals.

3Probe the test points and read the display.

4Press to display dual measurements.

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