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89
Figure 5-17 Measure Small Signal by Reducing the Resolution Bandwidth
2
Measure Small Signals by Using Mean Detection and Increasing Sweep Time
When the noise base of the microwave analyzer covers small signals, the application of mean detection
method and increasing the sweep time can smooth the noise and improve the visibility of the signal. A
slower sweep speed results in a better average noise variance. Operation steps are as follow:
a)
Reset the microwave analyzer:
Press
【
Reset
】
, [Default State] .
b)
Set the center frequency, span and reference level of the microwave analyzer:
Press
【
Frep
】
, [Center Freq] , 1 [GHz] ;
Press [Span], 1 [MHz] ;
Press
【
Amplitude
】
, [Ref Level] , -40 [dBm]
c)
Select the detection method of the microwave analyzer as the mean detection:
Press
【
BW
】
, [Detector Auto Man] , [Avg] .
d)
Press [Peak] to place the marker on the peak of the large signal.
The measurement result is shown in Figure 5-18.
