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Making Basic Measurements Using Spectrum Analyzer Mode
Measuring low-level Signals Using Attenuation, Video Bandwidth, and Video Averaging
Example: The resolution bandwidth can be decreased to view low-level
signals.
1. As in the previous example, connect an antenna to the spectrum analyzer
input. Set the spectrum analyzer to view a low-level signal.
2. Press
IBW)
then
m.
The low-level signal appears more clearly because
the noise level is reduced. See Figure 4-17.
PEAK
LOG
10
dB/
WA SE
SC
FL
CORF
0.
16.32
JUL
30. IQ93
MKR
100.13
MHZ
#AT
20
dB
-2.78
dml”
30
CHZ
“EM
30
KHZ
SPAN
10
00
MHZ
SWP
33
3
m5et
“IO
BW
m
MAN
EM1
BW
Figure 4-17. Decreasing Resolution Bandwidth
A
“#”
mark appears next to the RES BW annotation at the lower-left corner of
the screen, indicating that the resolution bandwidth is uncoupled.
As the resolution bandwidth is reduced, the sweep time is increased to
maintain calibrated data.
4-25
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