Cisco DNCS System Release 2.7 3.7 4.2 Design Guide

 

58 

78-4001708-01 Rev B 

This section provides an overview diagram and field descriptions of the DMA 

Channel Status diagnostic screen. You can view this screen to review the status of 

various Direct Memory Access (DMA) channels for these set-tops. 

 

By accessing this diagnostic screen, you can perform the following tasks: 

 

 

Check the integrity of the signals 

 

Determine the current capacity of the DMA buffer 

 

Verify the total number of packets received since a DMA channel became active 

 

Determine the status of a DMA channel 

 

The color of each row on the DMA Channel Status diagnostic screen represents one 

of the following status types for the channel: 

 

Gray—indicates an inactive channel 

 

White—indicates an active channel with a nominal current condition and no 

previous errors 

 

Amber—indicates an active channel with a nominal current condition, but 

previously had overflow errors 

 

Red—indicates an active channel that is presently in an overflow condition