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range.
2
）
Connect the red and black test leads to the
COM
and
input jack.
3) Press "
SEL
" key to switch to frequency measurement
status
4) Use the other two ends of the test pen and connect it to
the voltage source or both ends of the load for
measurement.
5) Read the measured frequency value from the LCD.
6) Press "
SEL
" again to enter the duty cycle measurement
status.
Note
：
⑴
The measurement range of frequency is 10Hz ~
10kHz. If the measured frequency is lower than 10Hz, the
LCD will display "00.0". It is possible to measure the
frequency below 10 kHz, but the measurement accuracy
is not guaranteed.
⑵
duty ratio measurement range of 10 to 95%.
⑶
“
” Indicates the maximum input voltage is 750V
AC (RMS).
2
）
Through the HZ / DUTY gear
：
Warning
Risk of electric shock.
Do not measure the frequency of any voltage
above 250V DC or ac RMS to prevent electric
shock or damage to the meter.
1) Set the switch to Hz%.
