Cisco SR2016T-NA Reference Manual page 243

Chapter 2 Cisco CMTS Configuration Commands
cable spectrum-group (global configuration)
To create and configure a spectrum group, use the cable spectrum-group command in global
configuration mode. To disable this spectrum group, use the no form of this command.
Syntax Description
group-number
time day
hh:mm:ss
frequency up-
freq-hz
band up-freq1-
hz up-freq2-hz
pwr-lvl-dbmv
Defaults If not specified, the group is set for a nominal input power level of 0 dBmV and the group is not
scheduled for automatic frequency or power changes.
Command Modes Global configuration
Command History Release
11.3 NA
12.0(7)XR2
OL-1581-08
cable spectrum-group group-number [time day hh:mm:ss] frequency up-freq-hz [pwr-lvl-dbmv]
cable spectrum-group group-number [time day hh:mm:ss] band up-freq1-hz up-freq2-hz [pwr-lvl-
dbmv]
no cable spectrum-group group-number
Specifies the spectrum group for which you are specifying a parameter value or
specifies the number of the spectrum group you wish to remove from your router
configuration. Valid range is from 1 to 32, or from 1 to 40, depending on the
Cisco IOS software release.
(Optional) for scheduled spectrum groups, enter the day of the week (Sun—Sat) and
the time of day that the frequency and input power level should change.
Specifies a center frequency for the upstream group. The valid range is 5,000,000 Hz
to 42,000,000 Hz (DOCSIS), 55,000,000 Hz (Japan), or 65,000,000 (EuroDOCSIS).
You can enter this command multiple times for the same spectrum group to
Note
create a group of individual frequencies to be used for frequency hopping.
Specifies a range of center frequencies the Cisco CMTS can scan to find an
acceptable channel to which the spectrum group may hop. The valid range for up-
freq1-hz is 5,000,000 Hz to 42,000,000 Hz (DOCSIS), 55,000,000 Hz (Japan), or
65,000,000 (EuroDOCSIS), but up-freq2-hz must be greater than up-freq1-hz.
Cisco recommends using the band option, and not the frequency option,
Note
when creating spectrum groups for the Cisco uBR-MC16S cable interface
line card because this allows the card to scan the entire range of frequencies
for its automatic frequency hopping feature.
(Optional) Specifies the nominal input power level. The valid range is –10 to
+25 dBmV, with a default of 0 dBmV. Some cable plants might want to change only
the input power level, and not the frequency, on a daily time schedule.
Modification
This command was introduced.
The band parameter for this command was added to enable
frequency range scanning capabilities in the Cisco uBR-MC16S
cable interface line card.
Cisco Broadband Cable Command Reference Guide
cable spectrum-group (global configuration)
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