Chapter 9: Upstream Cable Access Modules (UCAMs)
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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upstream provisioning. Refer to the tables in see "
24U CAM Upstream Power Level Groups
(page 282), to make
sure your settings fall within the proper table.
1.
If desired, change the maximum power adjustment parameter using the following command (range = 1–48; default =
24 units, which equals 6 dBmV):
configure interface cable-upstream <slot>/<port> cable max-power-adj <power adjustment>
Where: <power adjustment> = Maximum size of the CMTS range , and response power adjustments in units of 0.25
dBmV.
2.
If desired, set the start and end values for databackoff parameter (default = 2-8):
configure interface cable-upstream <slot>/<port> cable databackoff <0-16>-<0-16>
Where: the first <0-16> is the valid range for the start value, the second <0-16> is the valid range for the end value,
and the start value must be less than or equal to the end value.
3.
If desired, enable or disable the sending of pre-equalization coefficients to the CMs:
configure interface cable-upstream <slot>/<port> cable pre-eq-enable <true|false>
Where true = enabled and false = disabled.
4.
If desired, select modulation profile ID (default = 2):
configure interface cable-upstream <slot>/<port> cable modulation-profile <profile id>
Where: <profile ID> = the modulation profile numeric identifier
5.
If desired, set the start and end values for range backoff parameter (default = 2-7):
You must enter the start and end values separated by a dash.
configure interface cable-upstream <slot>/<port> cable rangebackoff <0-16>-<0-16>
Where: the first <0-16> is the valid range for the start value, the second <0-16> is the valid range for the end value, and
the start value must be less than or equal to the end value.
6.
If desired, put US port in service:
configure interface cable-upstream <slot>/<port> no shutdown
7.
If desired, put US logical channel in service:
configure interface cable-upstream <slot>/<port[.0]> no shutdown
8.
If desired, modify some or all of the following parameters for this US channel:
configure interface cable-upstream <slot/port> cable ?