Sensing a 47pf cap, offset with 37.875 pf with EVM directly installed into computer USB port. The wires connecting cap are shielded but cap is bare.
Results display a very well defined sine wave of 25 cycles over 600 samples values. Settings are SPS 200, uC 100ms
Explored shielding the cap being sensed and puzzled for waveform became lower amplitude but much better defined.
Explored changing Sps to 100, uC 200 ms and again 25 cycles of sine wave in the 600 samples.
Surely appears to be a 60Hz coupling but how is Sps of 200 producing 25 cycle in output of 600 samples at 100 ms or Sps of 100 producing 25 cycle in output of 600 samples at 100 ms?
