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Chapter 2 Measurement Procedure
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NOTE
2.2.3 Measurin
AC/DC Current
AC+DC A
･ Depending on ambient temperatures, the counter
would not become zero under no input. If this
happens, perform a zero-cancel correction (2.5.2:
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 (2.2.5, Figs. 1
and 2).
･ The AC A mode does not allow measurement of DC
waveforms, full-wave rectification waveforms, half-
wave rectification waveforms, or DC+AC
waveforms (See 1.5: Modes).
･ The 200 A range will display up to 250 A, however,
only the range from 10 A to 200 A 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
to display .
2. Switch between the auto range and the manual range
as necessary.
3. Press
0ADJ/RESET
to make an auto-zero-adjustment
(without clamping the measured conductor inside
the clamp sensor) with the clamp sensor firmly
closed. (see 2.5.1: Auto-zero-adjustment function).
ADJ
annunciator lights to indicate that auto-zero-
adjustment is complete.
4. If the counter fails to become zero under no input,
press
HOLD
and then press
0ADJ/RESET
to
perform a zero-cancel correction.
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