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4.1.3 Trace Average
Taking the average is the digital processing. It is to plus current value in each trace
point and previous average value, and then take the average. Choose the operation
of taking average. When spectrum analyzer is doing the automatic coupling, it can
make the displayed noise level get smooth to change detection mode into sampling
mode.
1) Reset spectrum analyzer
2) Set the frequency of signal source and amplitude as 1 GHz and -80 dBm.
Connect the RF OUT port of signal source to the RF IN port of spectrum
analyzer and turn on the signal output.
3) Set center frequency, span and reference level:
l Press FREQ → 1GHz
l Press SPAN → 5MHz
l Press AMPT→ - 40dBm
4) Press TRACE →Average (ON) to turn on the average function.
l
Press 100 → ENTER, set the number of average as 100. Because the
operation of taking the average will make the trace be smooth, and the low
level signal will be clearer.
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