34
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Measurement Procedures
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NOTE
The button is disabled during automatic recording.
NOTE
The
FUNCTION
switch setting is ignored when measuring with
the clamp-on sensor.
For details on how to use the 9667 FLEXIBLE CLAMP ON
SENSOR to measure AC current, refer to section 2.5, "AC
Current Measurement 2."
(4) PAPER FEED button
Use this button for manual paper recording.
Pressing this button momentarily advances the paper about
30 mm. Holding this button advances the paper
continuously.
(5) FUNCTION switch
Set to DC or AC to measure direct or alternating current,
respectively.
(6) Range selector
Set according to the expected maximum amplitude of the
measured signal.
(7) AC current measurement
To measure AC current using an optional clamp-on sensor,
connect the clamp-on sensor to the clamp terminals and set
the range selector to A. Also, set the A (CLAMP) selector
to match the input sensitivity of the clamp with the
expected maximum current to be measured.
(8) Printing waveforms
Either average or peak values can be selected for waveform
printing. The selection is made when turning the power on
(when the power is off, the standard condition is selected).
Unaveraged mode (standard setting)
The printed waveform consists of the minima and maxima
points of the data sampled between printing intervals. This
mode is useful for recording rapid changes in input signals,
such as instantaneous electrical faults.
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