Chapter 8: Downstream Cable Access Modules (DCAMs)
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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For example, if the power level is set to 60 dBmV, and if you try to add a second channel to the same F-connector, then the
CLI will allow this second channel to be added to the same F-connector as long as it has not been added to a cable-mac.
But the command to add this second channel to a cable-mac will fail because 60dBmV is not a valid power level for two
channels on the same connector. If the power level for the first channel has been set to 60 dBmV and the second channel
has already been assigned to a cable-mac, then the CLI will reject the command to assign this second channel to the 60
dBmV F-connector.
Other operational notes:
If the power level is changed for one channel, the power level for all other channels associated with the same F-
connector is also changed.
The command to reconfigure the power level fails if the chosen power level is outside of the range shown in the table
above.
16D Physical Interface Cards (PICs)
There are two types of 16D CAM PIC. The normal 16D CAM PIC is equipped with four F-connectors, each labeled for the
appropriate DS channels it carries. Each connector is capable of carrying up to four downstream channels. The 16D CAM
sparing PIC does not have any F-connectors. The chassis back slot of the downstream CAM sparing group leader must be
equipped with a sparing PIC. In a 16D sparing group, the sparing CAM PIC is to the left of the 16D CAM PICs for which it
provides redundancy, as seen from the rear of the chassis.
16D CAM PIC LED Status
Each F-connector of the 16D CAM PIC has an LED next to it. The LED status descriptions for the 16D CAM PIC are listed in
the following table:
Table 25.
CAM PIC LED Descriptions
If CAM PIC LED Is…
Then F-Connector Is Supporting…
On (green)
At least one active downstream channel.
Off
No active channels on this connector.