U1271A/U1272A User’s Guide 11
Table of Contents
1 Introduction
About This Manual 22
Documentation map 22
Safety notes 22
Preparing Your Multimeter 23
Check the shipment 23
Install the batteries 23
Turn on your multimeter 26
Automatic power-off 26
Enabling the backlight 27
Selecting the range 27
Alerts and warnings during measurement 28
Adjusting the tilt stand 30
Connecting the IR-USB cable 30
Power-on options 32
Your Multimeter in Brief 33
Dimensions 33
Overview 35
Rotary switch 37
Keypad 41
Display screen 45
Input terminals 51
Cleaning Your Multimeter 53
2 Making Measurements
Crest Factor 56
Measuring AC Voltage 57
Using the LPF (Low Pass Filter) Function for AC
measurements 59
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