2-1
IM WT310E-01EN
Measurement Conditions
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2
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8
App
Index
2.1
Setting the Measurement Mode
Procedure
Press
SHIFT+VOLTAGE (MODE)
to select the measurement mode.
Each time you press SHIFT+VOLTAGE (MODE), the measurement mode changes in the order shown
below.
Explanation
Measurement Mode
One of the following measurement modes can be selected for the measurement of voltage and current.
The default setting is RMS.
Indicator
Voltage
Current
RMS
True rms value
True rms value
VOLTAGE MEAN
Rectified mean value
calibrated to the rms value
True rms value
DC
Linear average
Linear average
Theoretical Equations
RMS
Select this mode to display the true rms values of the voltage and current.
T
1
T
0
(t)
2
dt
f(t) : Input signal
T
: One period of the input signal
VOLTAGE MEAN
Select this mode to display the voltage as a rectified mean value calibrated to the rms value. A sine
wave is used to calibrate the value to the rms value, so when sine waves are measured, the values
obtained in this mode are the same as those obtained in RMS mode. The values differ from those
obtained in RMS mode when waves other than sine waves, such as distorted waves and DC waves,
are measured.
T
1
(t)
dt
f(t) : Input signal
T
: One period of the input signal
2 2
·
π
T
0
DC
Select this mode when the input voltage or current is DC. The input signal is linearly averaged, and the
result is displayed.
Chapter 2
Measurement Conditions
