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8. OPERATING INSTRUCTIONS
18
8.16 DUTY CYCLE MEASUREMENT
MEASURED BY AC CURRENT PROFILE DUTY CYCLE (FROM THE CLAMP HEAD)
Warning
Risk of electric shock.
Remove the test leads from the meter when measuring with the clamp head.
1. Rotate the measurement function selection dial to the current measurement.
2. Press the trigger to open the clamp, pass the wire to be measured into the centre of the
clamp, and then slowly release the trigger until the clamp is fully closed.
3. The measurement result is read from the LCD.
Note: The instrument can measure only one current conductor at a time. If two or more
current conductors are clamped at the same time, the measurement result may be wrong.
The duty cycle measurement range is 10 ~ 95%. If the measured duty cycle is less than
10%, the LCD will display "UL". If the duty ratio is higher than 94.9%, "OL" will be
displayed. The input signal frequency measurement range is 10 ~ 1kHz, if the
measurement is higher than 1kHz frequency the measurement accuracy cannot be
guaranteed. The maximum input current is 600A AC (rms).
8.17 VOLTAGE MEASURED DUTY CYCLE
(THROUGH THE AC VOLTAGE RANGE)
Warning
Risk of electric shock.
When measuring high voltage, extra care should be taken to avoid electrical shock.
Do not attempt to use this meter on a voltage higher than the AC600V rms value
1. Rotate the measurement function selection dial to the AC voltage measurement.
2. Connect the black lead to the COM probe socket and the red lead to the VΩ probe
socket.
3. Press the "Hz /%" button to select the duty cycle measurement function.
4. Connect the test leads to the signal source.
5. The measurement result is read from the LCD.
Note: The duty cycle measurement range is 10 ~ 95%. If the measured duty cycle is less
than 10%, the LCD will display "UL". If the duty ratio is higher than 94.9%, "OL" will be
displayed.
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