PPA45xx Quick User Guide
Page 51
Setting the frequency filter:
Press 2 times
Frequency filter parameter will be
selected
Press Drop down box will open
with all available frequency ranges
Press arrows to select
frequency filter parameter required
Press “ENTER” to confirm selection
By applying a 250Hz filter within PWM mode we can now see that the instrument
is locking onto the fundamental frequency this is required for correct signal
processing of the waveform