CDM-840 Remote Router MN-CDM840 / CD-CDM840
Table of Contents Revision 3
xii
L.5 Summary .......................................................................................................................... L–11
APPENDIX M. DPC (VMS DYNAMIC POWER CONTROL) ............................................... M–1
M.1 Overview .......................................................................................................................... M–1
M.1.1 Background .............................................................................................................................. M–2
M.2 Theory of Operation .......................................................................................................... M–2
M.2.1 About DPC ................................................................................................................................ M–2
M.2.2 DPC Functionality ..................................................................................................................... M–3
M.2.2.1 Entrance Link Cabling ................................................................................................... M–3
M.2.2.2 Operational Essentials .................................................................................................. M–4
M.2.2.2.1 Power Reference ...................................................................................................... M–4
M.2.2.2.2 Reference Calibration ............................................................................................... M–5
M.2.2.2.3 Rated Maximum Power ............................................................................................ M–5
M.2.2.2.4 Terminal Maximum Power ....................................................................................... M–5
M.2.2.2.5 Target Power ............................................................................................................ M–5
M.2.3 DPC Operational Considerations ............................................................................................. M–7
M.2.3.1 Adaptive Control Loop (ACL) Components .................................................................. M–8
M.2.3.1.1 Closed Loop Mechanism ........................................................................................... M–9
M.2.3.1.2 ACL Timers .............................................................................................................. M–10
M.2.3.2 LQRM Failure and Recovery Steps ............................................................................. M–11
M.2.3.3 DPC with ACM ............................................................................................................ M–12
M.2.3.4 Terminal Maximum Power ......................................................................................... M–13
M.2.3.5 DPC with ACM and Hub Backoff ................................................................................ M–14
M.2.3.6 Hub Fade Control ....................................................................................................... M–15
M.2.4 Roaming with DPC ................................................................................................................. M–16
M.3 DPC Operation ................................................................................................................. M–17
M.3.1 DPC Operation Using the HTTP Interfaces............................................................................. M–18
M.3.1.1 Configure DPC ............................................................................................................ M–19
M.3.1.2 Power Reference in DPC Operation ........................................................................... M–20
M.3.1.2.1 Set P
ower Reference .............................................................................................. M–20
M.3.1.3 DPC – Status Reporting .............................................................................................. M–24
M.3.1.4 DPC – Operational Changes ....................................................................................... M–24
M.4 Firmware Update ............................................................................................................. M–25
M.5 Final Considerations ......................................................................................................... M–25
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