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• In 200mV range, displayed value may fluctuate when disconnecting
input terminals. This is normal.
• AC voltage measuring circuit in this Meter is of mean value system
so an AC waveform other than a sine wave causes error.
• To improve the accuracy of DC voltage measurements taken in the
presence of AC voltages (such as, measuring the DC offset voltage
of an amplifier in the presence of an AC signal), measure the AC
voltage first. Note the just measured AC voltage range and select a
DC voltage range that is the same or higher than the AC voltage
r
ange. This method improves the DC voltage accuracy by
preventing the input protection circuit from being activated.
Follow these steps to measure DC (or AC) volts.
1. Set function and range switch to the desired DC V (or AC V) range.
If you do not know the value of the voltage to be measured, always
start with the highest range and reduce the setting as required to
obtain a satisfactory reading.
2. Plug the red test lead into the “VΩ” input terminal and the black lead
into the “COM” input terminal of the instrument.
3. Disconnect the power from the circuit to be tested.
4. Connect the test leads to the circuit to be tested.
5. Reapply power to the circuit, the measured voltage will appear on
the display of the instrument.
6. If the red test lead is connected to the negative (or lower voltage)
side of the circuit, a minus sign will appear on the display, at the left.
7. Disconnect power to the circuit before removing the test leads from
the circuit.
Three-Phase AC Volts
This Mete
r
is designed to primarily measure household AC voltage.
When measuring THREE-PHASE circuit line-to-line, the value of the
voltage is actually higher than the rated line-to-ground 3-phase
voltage. It is very important that you do not exceed the maximum AC
(RMS) rating of this Meter, 750V AC.
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