R3131 Spectrum Analyzer Operation Manual
2.2.8 Separating Two Signals
Setting the measurement conditions
This changes the analyzer settings so that the input signal is displayed more clearly.
6. Press FREQ, 2, 0, 0 and MHz.
A center frequency of 200 MHz is set.
7. Press SPAN, 1, 0 and MHz.
A frequency span of 10 MHz is set.
8. Press LEVEL, 1, 0 and MHz (-dBm).
The reference level of - 10 dBm is set.
9. Press A TT AUTO/MNL, 2, 0 and GHz (dB).
Attenuator level is set to 20 dB.
The spectrums are not fully separated because the RBW default setting is 100
MHz. As a result, the display shows only one input signal even though there are
actually two.
ADVANTEST 83131
REF -10.0 dBm
10d8/
ATT
20dB
Thu 11 Dec 1997Level
*ATT 20dB A_wrt B_Olnk
Norm Norm
Ref Level
-" ATT
AUTO /MK
CENTER 200.00 MHz SPAN 10.00 MHz
RBW 100 kHz VBW 100 kHz SWP SO ms
Figure 2-32 Two Superimposed Peaks
2-40
dB/div ▶
Linear
Units ▶
Offset
ON /OFF
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