R3131 Spectrum Analyzer Operation Manual
2.2.9 Dynamic Range
Performing the averaging function
This function can improve the S/N ratio faster than the VBW method shown above.
This function makes it possible to quantify random components and measure signals
buried in the noise.
10. Press TRACE, 1/2_more and A VG A.
AVG A (with a default setting of 20) has reduced the noise level considerably.
ADVANTEST R3131
Fri 19 Dec 1997Avg A
REF -40.0 dBm ATT 10dB A_avg
10cp/ $npl Snpl AVG A
ON /OFF
AV G TIMES
; #20
FAVGA -20/20
CENTER 200.0 MHz SPAN 100.0 MHz
*RBW 100 kHz *VBW 10 kHz SWP 200 ms
Figure 2-39 The Trace after Averaging
AV G A
PSE /CONT
AV G A
CONT /SGL
2-45
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