Cisco Headend System Release 2.7 Design Guide

Page of 124
 
Chapter 5    SDV Troubleshooting Flowcharts 
 
 
 
86 
4002915 Rev B 
Macroblocking on an SDV Channel 
When a subscriber tunes to an SDV channel, a video issue or macroblocking occurs 
and may result in tiling, blocking, or channel freezing. This issue may occur on a 
single channel, as well as on multiple channels. To view the sequence of flowcharts 
for Macroblocking, go to one of the following sections: 
 
Macroblocking: Single Channel (on page 86) 
 
Macroblocking: Multiple Channels (on page 91) 
 
Macroblocking: Single Channel 
Each flowchart within this sequence is a possible cause for Macroblocking on a 
single SDV channel. Each individual flowchart provides steps to determine whether 
or not a possible cause is, in fact, causing this issue.