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Chapter 10
Measure Mode – Spectrum Tab
Downstream Spectrum
DSAM Help User Guide
Rev. 001
253
frequency spans. The Downstream Spectrum measurement mode
allows for a very comprehensive troubleshooting utility that reveals
ingress spikes on the forward path as brief as 1 ms.
Running a
Downstream
Spectrum
To run a downstream spectrum
1
Press
Measure
.
2
Press the
Spectrum
softkey.
3
Using the arrow keys, select
Downstream Spectrum
.
4
Press
ENTER
.
5
Press the
Settings
softkey.
6
Using the arrow keys, select
Center Frequency
.
Figure 229
Spectrum – Downstream Spectrum
Figure 230
Spectrum – Downstream Spectrum
21128026 R001 DSAM Help User Guide.book Page 253 Thursday, February 5, 2009 2:02 PM