Reply To: Power Spectral Density Measurement Discrepancy?

A.J.

For the Spike software, to get comparable measurements, ensure video units are set to power, detector is set to average, and disable spur reject in the settings file menu. With these settings, you should see similar readings.

Attached is a snapshot with the settings you suggested. Note that the measurement result is very nearly the same as before. This is a serious issue. Any other thoughts?

For a wide band signal like this, ultimately, you will want to compare channel power readout.

I am trying to make a PSD measurement for FCC part 15 compliance which requires that you measure the peak power in a 3khz RBW. How does the channel power readout help?

Attachments:

You must be logged in to view attached files.