Arris C4 - Page 14

STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 14
Shuffle Network ....................................................................................................................................... 280
Rules and Restrictions for 12U/24U CAM Configuration .................................................................................. 281
Slot Provisioning ....................................................................................................................................... 281
Annex ........................................................................................................................................................ 282
Upstream (US) Channel to Physical Connector Mapping......................................................................... 282
24U CAM Upstream Power Level Groups ......................................................................................................... 282
Default Admin States ............................................................................................................................... 286
Basic Command Set for Bringing Up a 24U CAM .............................................................................................. 286
Measuring SNR in the 12U/24U CAM ............................................................................................................... 289
Channel SNR Calculations ......................................................................................................................... 289
Modem SNR Calculation ........................................................................................................................... 291
Modulation Profiles .......................................................................................................................................... 292
Default Modulation Profile ...................................................................................................................... 292
Valid Center Frequencies ......................................................................................................................... 294
Setting the Rx Power Levels ..................................................................................................................... 295
Adjusting Channel Settings in Response to Increased CM Scaling ................................................................... 298
Explanation of Upstream Parameters ............................................................................................................... 299
Modulation Profile Values ........................................................................................................................ 300
12U/24U Ingress Noise Cancellation ........................................................................................................ 308
Notes on DOCSIS 3.0 Upstream Frequency Range................................................................................... 308
Modulation Profiles: Default and User-defined................................................................................................ 309
Displaying Modulation Profiles ................................................................................................................ 311
Optimizing a Modulation Profile ....................................................................................................................... 311
Noise and SNR versus Modulation Symbol Rate ...................................................................................... 312
10. Control Complex Redundancy ............................................................................................................... 322
Overview ........................................................................................................................................................... 322
Add Control Complex ........................................................................................................................................ 323