Frequency And Duty Ratio Measurement - CPS AC750 Owner's Manual

4. OPERATING GUIDANCE

4.12 FREQUENCY AND DUTY RATIO MEASUREMENT

A) Clamp head measuring frequency (through AC current):
ELECTRIC SHOCK HAZARD. REMOVE PROBE FROM METER
BEFORE MEASURING WITH CURRENT CLAMP.
1. Set Selector Switch to position A .
2. Hold trigger, open clamp head, clip one lead of measurement
3. Press Hz/% key to switch to frequency measuring state.
4. Read current value on the LCD display.
5. Pressing Hz/% again enters duty ratio measuring state.
Note:
1. Clamping two or more leads of circuit to be tested simultaneously
2. Frequency measurement range is 10Hz~1kHz the frequency to
3. Duty ratio measuring range is 10 ~ 95%.
4. "
B) In Voltage Measurement Mode:
ELECTRIC SHOCK HAZARD. PAY SPECIAL ATTENTION TO AVOID
SHOCK WHEN MEASURING HIGH VOLTAGE. DO NOT INPUT
VOLTAGE MORE THAN AC 750 RMS.
1. Insert black probe to COM jack, insert red probe to INPUT jack.
2. Place Selector Switch to V or mV position, press FUNC to enter
3. Press Hz/% key to switch to frequency measuring state.
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1.800.561.8187
AC750RevA_Manual_091216.indd 22
WARNING
circuit to be tested in the clamp.
will not get correct measuring results.
be tested is less than 10Hz, or if frequency is higher than 10 kHz,
accuracy is not guarantee
y
"means that maximum input current is 1000A AC (RMS).
WARNING
AC voltage measurement state.
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2/14/2018 11:41:58 AM