DER EE DE-5003, Руководство пользователя

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Frequency (Hz) + Duty (%) Measurements
Caution
To prevent possible personal injury or damage the meter,
do not apply the circuits exceed 1000V.
Range: 0.0Hz~20.00MHz
( 6 ranges: auto range & manual range mode for option )
1. Set rotary
to “
Hz %
”
position.
2. Plug black test lead into the COM terminal and red test
lead into the V terminal.
3. Connect test leads to the circuit to be tested. Allow time
for values stabilize and then read the frequency of AC
measurement on the LCD.
4. The corresponding duty of the frequency value syncs
displaying on sub-display.
5. When finished, turn rotary switch to OFF position to turn
off the meter.
Note:
1. The voltage detected is too small which will not allow
frequency to be detected and displayed properly.
2. Duty cycle range is variable at different Frequency range,
see below table for detail.
Duty
Hz range
Available Range
600.0Hz 5.0%
～
95.0%
6.000KHz 10.0%
～
90.0%
60.00KHz 20.0%
～
80.0%
600.0KHz
unavailable
6.000MHz
unavailable
20.00MHz
unavailable
Hz%