Sanwa CD770, Instruction Manual

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5-2 Voltage Measurement ( )
Function Max. Rated Input Range
DCV 400.0 mV, 4.000 V, 40.00 V, 400.0 V, 600 V
ACV
DCV and ACV
Selection
Example of DCV
measurement
Example of ACV
measurement
Remarks:
This meter’s AC detection method is the average value method.
It indicates an average value of voltage or current in the
positive half cycle. No error will occur in measurement of
waveforms when the input waveform is sinusoidal wave with no
distortion. However, if the input waveform is distorted
sinusoidal wave or non-sinusoidal wave, an error will occur.
s The indication may fluctuate when the test leads are released.
It is not a failure.
s
The AC 400.0 mV range can be selected with the
button, but the accuracy is not guaranteed.
s
In the AC 4.000 V range, when the measuring terminals are
shorted, 7 counts maximum may remain indicated.
s
The accuracy guarantee frequency range of ACV
measurement is 40 Hz to 400 Hz.
If the frequency is above 1 kHz, measurement is not possible.
s
It may malfunction when measuring voltage in the inverter
circuit.
4.000 V, 40.00 V, 400.0 V, 600 V AC 600 V
DC 600 V