KPS DCM4000T Manuel D'instructions page 23

DCM4000T
"
alarm.
4.12 Frequency And Duty Ratio Measurement
1) Clamp head measuring frequency (through AC current):
WARNING
Note:
measuring results.
"
2) In Voltage Measurement Mode:
WARNING
COM
state.
Press "Hz/%"
Pressing "Hz/%" again can enter duty ratio measurig state and press for 2 second can return
INPUT
or
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EN