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Keysight U1281A/U1282A Quick Start Guide

Using the Rotary Switch

Legend

Measurement function

Model

U1281A

U1282A

AC V/

AC V with Low Pass Filter (LPF)

[a]

✔

AC mV/

AC mV with LPF

[a]

✔

DC/

AC+DC V

✔

DC/

AC+DC mV

✔

Resistance/

Continuity

✔

Diode/

Frequency counter

[a]

✔

Capacitance/

Temperature

✔

A/mA/

A/mA

AC+DC

A/mA

✔

DC A/

AC A

AC+DC A

✔

Square wave mode

[a]

—

✔

[a] For U1282A only.

MHz

OUT

WARNING

Remove the test leads from the measuring source
or target before changing the rotary switch
position.

Refer to the

U1281A/U1282A User’s Guide

for a

complete list and description of all rotary switch
labels.

Summary of Contents for U1281A

Page 1: ...Keysight U1281A U1282A Handheld Digital Multimeter Quick Start Guide ...

Page 2: ...d in compliance with IEC 61326 1 EN 61326 1 ICES NMB 001 and AS NZS CISPR 11 Safety Information The U1281A U1282A is safety certified in compliance with IEC EN 61010 1 IEC EN 61010 2 033 CAN CSA C22 2 No 61010 1 12 CAN CSA C22 2 No 61010 033 12 ANSI UL 61010 1 12 and ANSI UL 61010 033 12 Use with standard or compatible test probes Safety symbols Direct current DC Alternating current AC Caution ris...

Page 3: ...tions and instructions in this guide apply to the U1281A and U1282A Handheld Digital Multimeters The model U1282A appears in all illustrations All related documents and software are available for download at www keysight com find hhTechLib NOTE Your multimeter is capable of receiving remote commands and performing remote data logging To use these features you will need either an IR to USB cable in...

Page 4: ... V U1 28 2A Tru e R MS Mu ltim ete r m A Pe a k Vs en s e D ua l A uto FU SE D 44 0m A C AT III 10 0 0V 60 0V C AT IV MA X 10 A MA X FU SE D O UT O UT M H z RM T U1 28 2A Tru e R MS Mu ltim ete r U1 282 A True RMS Mult imet er Vs en se Pe ak Vse nse Du al Au to V mV OU T MH z mA A V mV A CO M V FU SE D 44 0m A CA TIII 100 0V 60 0V CA TIV MA X 10A MA X FU SE D OU T RM T A m A CO M V V A V m V m V T...

Page 5: ...Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT Vsense red LED indicator Display screen Keypad Rotary switch Input terminals IR communication port Test lead probe holders Battery access under the orange rubber holster Tilt stand Fuse access under the orange rubber holster ...

Page 6: ... DC mV Resistance Continuity Diode Frequency counter a Capacitance Temperature DC μA mA AC μA mA AC DC μA mA DC A AC A AC DC A Square wave mode a a For U1282A only V mV V mV MHz mA A OUT WARNING Remove the test leads from the measuring source or target before changing the rotary switch position Refer to the U1281A U1282A User s Guide for a complete list and description of all rotary switch labels ...

Page 7: ...voltage measurements Starts and stops data logging Turns the backlight on off Activates and deactivates the dual display mode if supported by the measurement Switches between the regular and shifted icons printed in orange functions Enters the Log Review menu Freezes the present reading in the display TrigHold mode Automatically freezes the present reading when certain conditions are met AutoHold ...

Page 8: ...tion Input terminals Overload protection 1000 Vrms 1000 Vrms for short circuit 0 3 A 440 mA 1000 V fast acting fuse 11 A 1000 V fast acting fuse This input terminal is for use with the Remote Switch Probe purchased separately The button on the probe emulates the button on the multimeter by default V V COM mV V mV MHz mA mA COM A A COM OUT RMT Hold ...

Page 9: ...requency dependence Hazardous current indication The multimeter will display the hazardous current symbol as an early precaution when the measured current has reached the maximum fuse rating as follows Measurement DC AC V mV 30 V or OL 30 V or OL 30 V or OL Measurement DC AC A 11 A or OL 11 A or OL 11 A or OL μA mA 440 mA or OL 440 mA or OL 440 mA or OL CAUTION If your measuring current is 10 A 19...

Page 10: ...s not set to the correct current position The secondary display will show or until the test lead is removed The beeping will stop automatically after 5 seconds even if the test lead is not removed the rotary switch is set to the current measurement position but no lead is inserted into its respective input terminal The secondary display will show and the warning alert will stop after approximately...

Page 11: ...ck Start Guide 11 Voltage Measurements Measuring AC voltage A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT 1 AC 3 2 mV V ...

Page 12: ... LPF enabled There may be a possible presence of hazardous voltage and voltages measured with the LPF enabled may be greater than indicated For your safety take note of the symbol Disable the LPF when you have completed your measurement Esc Shift NOTE The LPF can improve measurement performance on composite sine waves that are typically generated by inverters and variable frequency motor drives ...

Page 13: ... U1282A Quick Start Guide 13 Measuring DC voltage A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT 1 DC 3 2 V mV ...

Page 14: ...potential to earth is greater than 1000 V CAUTION Current can be measured up to 440 mA maximum continuously You can measure current more than 440 mA and up to 600 mA for 20 hours maximum A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT 1 LOAD 3 AC 2 A mA Esc Shift ...

Page 15: ...Keysight U1281A U1282A Quick Start Guide 15 Measuring voltage frequency Measuring current frequency Measuring frequency duty cycle pulse width Hz Save Hz Save Hz Save ...

Page 16: ...an 3 6 Vpp you are required to use the frequency measurement mode available under the current or voltage measurement instead of the frequency counter A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT AC 1 4 2 3 Esc Shift MHz If the reading is zero or unstable press to toggle between a Hz or MHz ...

Page 17: ...t Guide 17 Resistance Measurement Removing test lead resistance A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT 1 3 2 Vsense 1 2 ...

Page 18: ...igh voltage capacitors before measuring continuity Use the DC voltage function to confirm that the capacitor is fully discharged A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT ON closed OFF open 4 1 3 2 Esc Shift If resistance threshold beeper sounds and red LED indicator lights up ...

Page 19: ...orward bias A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT 1 3 2 MHz The beeper will emit a continuous beep for 0 3 V to 0 8 V repeated beep for 0 05 V ...

Page 20: ...ht U1281A U1282A Quick Start Guide Reverse bias A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT 1 2 MHz 3 ...

Page 21: ...der test disconnect circuit power and discharge all high voltage capacitors before measuring capacitance Use the DC voltage function to confirm that the capacitor is fully discharged A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT 1 3 2 ...

Page 22: ...t connect the thermocouple to electrically live circuits Doing so will potentially cause fire or electric shock A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT 1 4 3 2 Esc Shift ...

Page 23: ...Quick Start Guide 23 Square Wave Output A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT 4 3 2 1 1 2 OUT 3 oscilloscope ...

Page 24: ...24 Keysight U1281A U1282A Quick Start Guide Scrolling between the pulse width duty cycle Setting the pulse width duty cycle Esc Shift Duty cycle Duty cycle Pulse width Pulse width ...

Page 25: ...tors without the necessary insulation protection or power off the voltage source The Vsense detector may be affected by differences in socket design insulation thickness and insulation type A mA COM V V A V mV mV U1282A True RMS Multimeter mA Vsense Peak Vsense Dual Auto FUSED 440mA CAT III 1000V 600V CAT IV MAX 10A MAX FUSED OUT OUT MHz RMT 2 AC 3 1 1 sec Vsense Vsense Range Changing the Vsense d...

Page 26: ...Quick Start Guide Measurement Data Recording and Review Recording measurement data manual log Viewing the recorded data Hz Save 1 sec NOTE Refer to the U1281A U1282A User s Guide for other data recording options Esc Shift 1 sec ...

Page 27: ...Keysight U1281A U1282A Quick Start Guide 27 Scrolling through previously stored records Viewing stored entries Viewing next and previous stored entries ...

Page 28: ...28 Keysight U1281A U1282A Quick Start Guide Viewing first and last stored entries Clearing stored entries Hz Save Clear the last stored entry Clear all stored entries 1 sec ...

Page 29: ...n is subject to change without notice Always refer to the Keysight Web site for the latest revision Keysight Technologies 2015 2016 Edition 2 April 22 2016 Printed in Malaysia U1281 90000 U1281 90000 www keysight com ...

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