STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
267
Chapter 9
Upstream Cable Access Modules (UCAMs)
Overview .......................................................................................... 268
12U Cable Access Module (12U CAM) ............................................. 268
Basic Command Set for Bringing Up a 12U CAM ............................. 274
24U Cable Access Module (24U CAM) ............................................. 277
Rules and Restrictions for 12U/24U CAM Configuration ................. 281
24U CAM Upstream Power Level Groups ........................................ 282
Basic Command Set for Bringing Up a 24U CAM ............................. 286
Measuring SNR in the 12U/24U CAM .............................................. 289
Modulation Profiles .......................................................................... 292
Adjusting Channel Settings in Response to Increased CM
Scaling .............................................................................................. 298
Explanation of Upstream Parameters .............................................. 299
Modulation Profiles: Default and User-defined ............................... 309
Optimizing a Modulation Profile ...................................................... 311