25
DIGITAL MULTIMETER
OPERATING INSTRUCTION
4.14 AC CURRENT MEASURING (WITH CLAMP, OPTIONAL)
4.14.1 Connect the black
output lead of clamp to
the COM jack and the
red one to the INPUT
jack of the meter.
4.14.2 Set the transform
switch at the
range position.
4.14.3 Put down the ‘FUNC.’
to enter the AC
measurement. Auto
range or manual range
can be transformed by
putting the ‘RANGE’.
4.14.4 Clamp the circuit under measured.
4.14.5 You can get reading from LCD.
NOTE:
• Select the AC clamp to measure the AC current.
• At the manual range mode, when only the figure ‘OL’ is
displayed, it indicates overrange situation and the higher
range has to be selected.
• At the manual range mode, when the value scale to be
measured is unknown beforehand, set the range selector
at the highest position.
• Matching problem about the meter and the sensitivity of
the clamp:
a. The sensitivity of 200A range is 200mV, that of 2000A is
2V; the sensitivity of the matching clamp is 0.1A/0.1mV.
The present indicated value is same to the
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