YOKOGAWA WT310EH User Manual

2-1
IM WT310E-01EN
Measurement Conditions
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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

YOKOGAWA WT310EH Specifications

General

Brand	YOKOGAWA
Model	WT310EH
Category	Measuring Instruments
Language	English