Cisco Headend System Release 2.7 User Guide
Chapter 1 Preparations to Add a BFS Carousel
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4 Type doctor -bv and then press Enter. The inband and out-of-band data rates on
the BFS carousel appear.
5 Are you determining the bandwidth for an inband or an out-of-band carousel?
If inband, go to step 6.
If out-of-band, go to step 8.
6 Locate the total bandwidth for inband carousels and then add 1 Mbps to the total
to account for any overhead.
Example: In the example in step 4, the bandwidth is 16 Mbps. Add 1 to the 16
Mbps for a total of 17 Mbps.
Example: In the example in step 4, the bandwidth is 16 Mbps. Add 1 to the 16
Mbps for a total of 17 Mbps.
7 Perform the calculation to determine the unused inband bandwidth on the BFS
and then go to step 10.
Note: The data rate for a 64-QAM and 256-QAM modulator is 27 Mbps and 38
Mbps, respectively.
Result: In this example, a 64-QAM would have 8 Mbps of unused bandwidth; a
256-QAM would have 19 Mbps of unused bandwidth.
Note: The data rate for a 64-QAM and 256-QAM modulator is 27 Mbps and 38
Mbps, respectively.
Result: In this example, a 64-QAM would have 8 Mbps of unused bandwidth; a
256-QAM would have 19 Mbps of unused bandwidth.
8 Locate the total bandwidth for out-of-band carousels (0.32 Mbps).