Frequency setting of the PW6001
QHow do the upper and lower frequency limits work?
The upper and lower frequency limits defines the limits of fundamental frequency to synchronize. It does not function like the low-pass filter to limit the band.
The maximum frequency 2MHz is fine for the most of measurement.
However, if the fundamental frequency and carrier frequency is close in PWM circuit, the PW6001 may synchronize to the carrier frequency instead of the fundamental.
To avoid that, it is recommended to set the uppper limit between the fundamental and carrier frequencies.
This is used to force the calculation period if the zero cross point is not detectable.