Keysight U1271A User manual

Keysight U1271A/U1272A
Handheld Digital
Multimeter
Quick Start
Guide

Contacting Keysight
www.keysight.com/find/assist
(worldwide contact information for
repair and service)
Safety and EMC Information
The U1271A/U1272A is
safety-certified in compliance with
EN/IEC 61010-1, EN/IEC
61010-2-033, CAN/CSA-C22.2
No.61010-1-12, CAN/CSA-C22.2
No.61010-2-033-12,ANSI/UL Std.
No. 61010-1, ANSI/UL Std. No.
61010-2-033, CAT III 1000 V,
CAT IV 600 V for pollution degree
2 environment.
EMC is designed in compliance
with EN 61326-1.
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)
2 Keysight U1271A/U1272A Quick Start Guide
For further safety information details, refer to the
Keysight U1271A/U1272A Handheld Digital Multimeter User’s Guide.
ENGLISH

Keysight U1271A/U1272A Quick Start Guide 3
Keysight U1271A/U1272A Quick Start Guide 3
ENGLISH
Verify that you received the following items in the
shipment of your multimeter:
4One pair of red and black test leads
4One pair of 4 mm test probes
4One K-type thermocouple lead kit
4Four 1.5 V AAA alkaline batteries
4Printed copy of the U1271A/U1272A Quick
Start Guide
4Printed copy of the Certificate 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 U1271A and U1272A Handheld Digital
Multimeters.
The model U1272A appears in all illustrations.
All related documents and software are available for
download at www.keysight.com/find/hhTechLib.
Keysight U1271A/U1272A Handheld Digital
Multimeter Quick Start Guide

4 Keysight U1271A/U1272A Quick Start Guide
4 Keysight U1271A/U1272A Quick Start Guide
ENGLISH
Differences between the U1271A and U1272A
The U1272A model offers these additional
functions:
–Z
LOW (low input impedance) measurements
– Smart Ωmeasurements
–Auto-diodetests
– AC+DC voltage and current measurements
– J-type thermocouple temperature
measurements
– 30 Ωand 300 MΩranges for resistance
measurements
– dBm and dBV measurements with selectable
impedance
– Data logging up to 10,000 memories
The U1271A model has one differing function:
– Qik-V tests
Install the Batteries
Your multimeter is powered by four 1.5 V AAA
alkaline 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.

Keysight U1271A/U1272A Quick Start Guide 5
Keysight U1271A/U1272A Quick Start Guide 5
ENGLISH
Turn On the Multimeter
To power ON your multimeter, turn the rotary
switch to any other position.
The Multimeter at a Glance
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).
Display screen
Keypad
Rotary switch
Input terminals

6 Keysight U1271A/U1272A Quick Start Guide
6 Keysight U1271A/U1272A Quick Start Guide
ENGLISH
Understanding the Rotary Switch
Test lead/probe holders
IR communication port
Battery access cover
Tilt stand
U1271A U1272A
NOTE
Press to switch between the shifted and
regular functions.
Shift
View
Esc

Keysight U1271A/U1272A Quick Start Guide 7
Keysight U1271A/U1272A Quick Start Guide 7
ENGLISH
Legend Description
AC V with Low Pass Filter
AC mV with Low Pass Filter
DC, (AC, or AC+DC V, U1272A only)
DC, (AC, or AC+DC mV, U1272A only)
Resistance/Continuity/(Smart Ω, U1272A only)
Diode/(Auto-diode, U1272A only)
Capacitance/Temperature
AC, DC, or (AC+DC mA and A, U1272A only)
AC, DC, or (AC+DC μA, U1272A only)
AC/DC V check for signal identification (U1271A only)
ZLOW (low input impedance) AC/DC V for checking ghost voltages
(U1272A only)
Smart
Auto

8 Keysight U1271A/U1272A Quick Start Guide
8 Keysight U1271A/U1272A 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 and stops 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.
Turns the backlight on/off. Enters/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. Enables autoranging.
Switches between the regular
and shifted (icons printed in
orange) functions.
Enters the Log Review menu.
Scale
Null
Peak
MaxMin
Auto
TrigHold
Exit
Dual
Setup
Hz%ms
Log
Auto
Range
Shift
View
Esc

Keysight U1271A/U1272A Quick Start Guide 9
Keysight U1271A/U1272A 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, 30 kA
fast-acting fuse
440 mA/1000 V, 30 kA
fast-acting fuse
Smart
Auto

10 Keysight U1271A/U1272A Quick Start Guide
10 Keysight U1271A/U1272A 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.
U1271A U1272A
DC