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show controllers cable upstream spectrum
02:16:49: 9987 :
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Router#
The output for each frequency range includes a time-stamp, the ending frequency for each range
Note
(in KHz), the historical average power level for that range (in dBmV), and a series of asterisks that
provides a graphical representation of the noise floor level for the signal (a stronger signal is indicated
by more asterisks).
The following example shows a partial display of the background noise data for upstream 4 of cable
interface slot 6/0. The command covers the entire upstream spectrum (5–42 MHz) at the minimum
resolution of 12 KHz.
Router# show controller cable 6/0 upstream 4 spectrum 5000 42000 12
02:15:54: Spectrum DATA(@0x4B060004) for u5: 4995-41991KHz(resolution 12KHz, sid 1):
02:15:54: Freq(KHz) dBmV Chart
02:15:54: 4995 :
02:15:54: 5007 :
02:15:54: 5019 :
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...
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Cisco Broadband Cable Command Reference Guide
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Chapter 3
Cisco CMTS Show Commands
OL-1581-08
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