1) Frequency test range is 10Hz -10kHz. It is possible to test the
frequency which is higher than 10kHz but the tolerance of the
test result can not be ensure.
2) “ ” means the maximum input voltage is 750V rms AC.
4.13.3 By HZ/DUTY range:
WARNING
Beware of Electrocution. Pay special attention to avoid
electric shock when measuring high voltage. Do not input
the voltage which more than 250V rms AC.
4.13.3.1 Plug the black test lead into the COM jack and the red test
lead into the INPUT jack.
4.13.3.2 Set the rotary selector to the HZ/DUTY range position.
4.13.3.3 Connect test leads to the two ends of the source or load for
measurement.
4.13.3.4 Take the reading on the LCD.
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4.14 MEASURING DUTY
4.14.1 By A range ( from current clamp):
WARNING
Beware of Electrocution.
Ensure that the test leads are disconnected from the meter
before making current clamp measurements.
4.14.1.1 Set the rotary selector to the A
range position.
4.14.1.2 Press the trigger to open jaw. Fully enclose only one
conductor.
4.14.1.3 Press the "Hz/%" to switch to the DUTY measurement.
4.14.1.4 Take the reading on the LCD.
NOTE:
1) Do not put more than one cable into the jaw during test,
otherwise incorrect test value might be obtained.
2) 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 – 1kHz. It is possible to
test duty cycle of the higher than 1 kHz frequency signal, but
the tolerance of the test result can not be ensure.
4) “ ” means the maximum input current is 400A rms AC.
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