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4.12 Frequency And Duty Ratio Measurement
Electric shock hazard.
Remove the probe from the meter before
measuring with current clamp.
Warning
(1) Measuring switch is placed to position A.
(2) Hold the trigger, open clamp head, clip one lead of
measurement circuit to be tested in the clamp.
(3) Press Hz/% key to switch to frequency measuring
state.
(4) Rad the current value on the LCD display.
(5) Pressing Hz/% again can enter duty ratio measuring
state.
1) Clamp head measuring frequency
(through AC current):
Note:
(1) Clamping two or more leads of circuit to be tested
simultaneously will not get the correct measuring results.
(2) Frequency measurement range is 10Hz~1kHz the
frequency to be tested is less than 10Hz, or if
frequency is higher than 10 kHz, accuracy is
not guarantee
(3) Duty ratio measuring range is 10 ~ 95%.
(4) “ ”means that maximum input current is 1000A AC
(RMS).
2) In Voltage Measurement Mode:
Electric shock hazard.
Pay special attention to avoid shock when
measuring high voltage.
Don't input voltage more than AC 750 RMS.
Warning
(1) Insert black probe to COM jack, insert red probe
to INPUT jack.
(2) Place transfer switch to or position, press
FUNC to enter AC voltage measurement state.
(3) Prss “Hz/%” key to switch to frequency measuring state.
(4) onnect the probe with signal or both ends of load in
parallel for measurement.
(5) VRead on the LCD.
(6) Pressing “Hz/%”again can enter duty ratio measurig
state.
(1) Frequency measurement range is 10Hz~1kHz
When the frequency to be tested is less than 10Hz,the
LCD will show “00.0”Masuring frequency higher than
10 kHz is possible, but ccuracy is ot guarantee
(2) Duty ratio measuring range is 10 ~ 95%.
(3) “ ”means that maximum input voltage is 750V AC
(RMS).
Note:
mV
V
3) In HZ/DUTY Measurement Mode:
Electric shock hazard.
Pay special attention to avoid shock when
measuring high voltage.
Don't input voltage more than AC 250V RMS.
Warning
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