4.14.2 By V range:
WARNING
Beware of Electrocution.
Pay special attention to avoid electric shock when measuring
high voltage.
Do not input the voltage which more than 750V rms AC.
4.14.2.1 Plug the black test lead into the COM jack and the red test
lead into the INPUT jack.
4.14.2.2 Set the rotary selector to the range position.
4.14.2.3 Press the "Hz/%" to switch to DUTY measurement.
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4.14.2.4 Connect test leads to the two end of the source or load for
measurement.
4.14.2.5 Take the reading on the LCD.
NOTE:
1) If the duty cycle is less than 10%, symbol ‘UL’ will be
displayed on LCD; if the duty cycle is more than 94.9%,
symbol ‘OL’ will be displayed on LCD.
3) The input signal frequency range is 10 – 10 kHz. It is possible
to test duty cycle of the higher than 10 kHz frequency signal,
but the tolerance of the test result can not be ensure.
3) “ ” means the maximum input voltage is 750V rms AC.
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