Hioki 3285-20, Instruction Manual, Page: 49 / 85

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2.3 Voltage Measurement
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NOTE
2.3.3 Measuring AC/DC Voltage (AC+DC V)
Depending on ambient temperatures, the counter would
not become zero under no input, if this happens, press
HOLD button and then press 0ADJ/RESET button to
perform a zero-cancel correction. (See 3.1.2: Zero-
Cancel Correction Function)
During a f.s. input, the measurement response speed
is about 250 ms during rise (0% to 90%) and about
500 ms (100% to 10%) during fall (See 2.2.2:
Measuring AC Current (AC A), Figs. 1 and 2).
The AC V mode does not allow measurement of DC
waveforms, full-wave rectification waveforms, half-
wave rectification waveforms, or DC+AC
waveforms (See 1.5: Modes).
Every range will display up to 125% of the range,
however, only the range from 10% to 100% can be
displayed with guaranteed accuracy.
At any range, gross errors may occur at 1% or below
of the range, whose accuracy is not guaranteed, as a
result of internal corrective calculations.
1. Press button to display .
2. Insert the red test lead to V/
Ω
and the black test lead
to COM of the voltage/resistance input terminal.
3. Switch between the auto range and the manual range
as necessary.
4. If the counter fails to become zero under no input,
press HOLD button and then press 0ADJ/RESET
button to perform a zero-cancel correction. (See
3.1.2: Zero-Cancel Correction Function)
5. Attach or remove the rigid insulating sleeve as
required by the measurement category.
6. Carefully contact the test leads to a circuit.