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2 Making Measurements

Measuring AC Voltage

32 U1231A/U1232A/U1233A User’s Guide

Measuring AC Voltage

Set up your multimeter to measure AC voltage as shown in

Figure 2- 2. Probe the test points and read the display.

Figure 2-1 AC voltage display

NOTE

AC voltage measurements measured with this multimeter are returned as

true rms (root mean square) readings. These readings are accurate for sine

waves and other waveforms (with no DC offset) such as square waves,

triangle waves, and staircase waves.

NOTE

Press to measure the frequency of the AC voltage source. See

“Measuring Frequency” on page 62 to learn more.

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Agilent U1231A, U1232A 1
Digital Multimeter 1
Safety Symbols 3
Safety Considerations 4
Environmental Conditions 6
Regulatory Markings 7
Table of Contents 11
3 Multimeter Features 12
4 Multimeter Setup Options 12
List of Figures 15
List of Tables 17
Introduction 19
About This Manual 20
Preparing Your Multimeter 21
Introduction 1 23
Turning on your multimeter 24
Automatic Power-Off (APO) 24
Enabling the backlight 25
Enabling the flashlight 25
HELP and dEMo modes 26
Selecting the range 27
Voltage alert 28
Hazardous voltage indication 28
Adjusting the tilt stand 29
Connecting the IR-USB cable 29
Power-on options 31
1 Introduction 32
Your Multimeter in Brief 33
Rear and side view 34
Overview 35
Rear panel 36
Rotary switch 37
Display screen 42
Measurement units 44
Analog bar graph 45
Input terminals 46
Cleaning Your Multimeter 48
Making Measurements 49
Measuring AC Voltage 50
Voltage source 51
Measuring DC Voltage 52
Using VZ 54
for Voltage Measurements 54
Adjacent unused wiring 55
Energized wiring 55
to test a battery’s health 56
Measuring Resistance 57
Resistor 58
Testing for Continuity 59
2 Making Measurements 62
Tes ting Diode s 63
Forward bias diode 65
Reverse bias diode 66
Measuring Capacitance 67
Capacitance 68
Measuring Temperature 69
Making Measurements 2 71
Measuring AC or DC Current 75
Measuring Frequency 80
Multimeter Features 83
> 1 s 85
3Multimeter Features 96
Multimeter Setup Options 97
Using the Setup Menu 98
Setup Menu Summary 100
Multimeter Setup Options 4 101
Setup Menu Items 102
030.d V 104
(disabled) 104
Changing the beep frequency 105
(enabled) 106
(15.E) minutes 106
(15.E) seconds 107
(15.d) seconds 109
Pr e s s 111
Resetting the Setup items 114
Changing the temperature unit 117
°C °C, °C°F, °F, or °F°C °C 118
Agilent Technologies 119
Product Characteristics 120
Specification Assumptions 122
Measurement Category 123
Electrical Specifications 124
AC specifications 127
Capacitance specifications 128
Temperature specifications 129
Frequency specifications 130
Scale transfer (mV) 131

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