DM600MAX
EN
The High Frequency Rejection mode equip a Low Pass Filter in the AC measurements.
The cut-off frequency (-3dB point) of Low Pass Filter is 800Hz.
To use the frequency function, press MODE in the AC measurements, and press HFR
key, once activated, will change color, and pressing it again will deactivate the function.
Duty Cycle and Pulse width Measurement
The meter measures the positive half-cycle of a square wave, Display the ratio(%) of
the positive half-cycle to the entire period or seconds(ms) as the main readings of Duty
Cycle and Pulse Width. The secondary reading show the frequency of the waveform at
the same time. If a reading shows as 0% , 0ms or is unstable, the input signal may be
below or near the trigger level. The detail of frequency trigger level refer to the electrical
specifications.
15