Cisco PowerKEY CableCARD Module

4002025 Rev G 

 

5 

 

This section outlines the solutions implemented to correct several issues discovered 
in previous releases of CableCARD module software. 

Split channels are channels that change content during the broadcast day by sending 
updated SAM tables when the content change occurs. For example, channel 100 
broadcasts CNN from 8 a.m. to 8 p.m. and then broadcasts Fox News from 8 p.m. to 
8 a.m. Previously, when this content change occurred, the CableCARD module 
would reset. This reset caused a brief interruption in service. Now, out-of-band SAM 
table updates related to split channels occur without resetting the CableCARD 
module. 

This fix allows the CableCARD module to detect and recover from a data channel 
error condition in order to avoid a lock-up condition that could occur with certain 
hosts. Previously, subscribers had to unplug the TV or remove the CableCARD 
module in order to recover from this condition. 

This enhancement improved scheduling of the SAM table version check and added 
better error handling in the SAM table loading procedure.  

Previously, the CableCARD module could become "stuck" in download mode if a 
OSM UNConfig trigger was inadvertently sent from the DNCS. Now the 
CableCARD module ignores OSM download requests.  

Note: The CableCARD module fully supports CVT downloads.