ETS-Lindgren 7405 E & H Near Field Probe Set - Manual (Page 29)

www.ets-lindgren.com Common Diagnostic Techniques 29
S IGNAL D EMODULATION
To demodulate a signal:
1. Set the spectrum analyzer for a 0 Hz frequency span and tune to the
signal of interest. This essentially changes the spectrum analyzer into
a tuned receiver and makes the display a frequency filtered
oscilloscope.
2. Take the video output off the spectrum analyzer and run it to the
oscilloscope. Using the oscilloscope as the display allows greater
flexibility in adjusting the signal amplitude and in triggering.