Specifications

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Cisco Cable Modem Termination System Feature Guide
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Chapter 3 Spectrum Management for the Cisco Cable Modem Termination System
Configuration Tasks
Setting Input Power Level
When you set the frequency, you may also set the input power level. To set upstream input power levels,
use one of the following commands in global configuration mode.
For an example of setting input power levels, see the “Input Power Level Examples” section on
page 3-66.
Command Purpose
CMTS01(config)# cable spectrum-group group-number
[{frequency up-freq-hz [ power-level-dbmv ]|band up-freq-hz
up-freq2-hz [ power-level-dBmV ]}]
or
CMTS01(config)# cable spectrum-group group-number [time
day hh:mm:ss ] [{frequency up-freq-hz
[ power-level-dbmv ]|band up-freq-hz up-freq2-hz
[ power-level-dBmV ]}]
The power-level-dBmV argument sets the input power
level for the frequency or band you are adding. The
standard power level is 0 dBmV. The valid range is –10
to +10dBmV.
The frequency option adds an upstream frequency to
the list of valid frequencies for a spectrum group.
Specifies the center frequency for the given spectrum
group for a frequency hop. The band option adds a
band to the spectrum group. The band is a range of
center frequencies that the CMTS can scan in order to
find an acceptable channel to which the spectrum
group may hop.
The power-level-dbmv option sets an input power level
for the frequency or band you are adding at a particular
time. The standard power level is 0 dBmV. The valid
range is –10 to +10dBmV.
The frequency option adds an upstream frequency to
the spectrum group at a particular time. The band
option adds a band to the spectrum group. The time
option specifies a time of day that the CMTS should
automatically perform a frequency hop for the given
spectrum group.