Comtec CDM-840 Installation And Operation Manual page 12

CDM-840 Remote Router
Table of Contents
7.3.10 Bulk Configuration String Commands ..................................................................................... 7-29
7.3.11 Redundancy Commands and Queries .................................................................................... 7-30
7.3.12 Vipersat Management System (VMS) Commands and Queries ............................................. 7-31
7.3.13 Entry Channel Mode (ECM) Commands and Queries............................................................. 7-32
7.3.14 Miscellaneous Utility Commands and Queries ....................................................................... 7-33
APPENDIX A. REFERENCE DOCUMENTATION .............................................................. A-1
A.1 Overview ........................................................................................................................... A-1
A.2 FEC (Forward Error Correction) Options .............................................................................. A-2
A.3 ACM/VCM (Adaptive Coding and Modulation / Variable Coding and Modulation) Operation .....
.......................................................................................................................................... A-3
A.4 BPM (Bridge Point-to-Multipoint) Operation ...................................................................... A-4
A.5 ECM (Entry Channel Mode) Operation ................................................................................ A-5
A.6 dMesh (VMS Dynamic Mesh) Connectivity .......................................................................... A-6
A.7 DPC (VMS Dynamic Power Control) Operation .................................................................... A-7
APPENDIX B. FEC (FORWARD ERROR CORRECTION) OPTIONS ................................ B-1
B.1 FEC Overview ...................................................................................................................... B-1
B.2 DVB-S2: LDPC and BCH ........................................................................................................ B-1
B.2.1 Range of Data Rates.................................................................................................................. B-2
B.2.2 BER, QEF, Eb/No, Es/No Spectral Efficiency, and Occupied Bandwidth .......................................... B-2
B.3 VersaFEC (Short-block LDPC) ............................................................................................... B-3
B.3.1 Range of Data Rates.................................................................................................................. B-4
B.4 CDM-840 Rx/Tx Error Performance Characteristics ............................................................... B-4
APPENDIX C. DATA COLLECTION ................................................................................... C-1
C.1 Data Collection Overview .................................................................................................... C-1
C.2 Initial Setup of Communications Between the CDM-840 and the User PC ............................. C-3
C.3 Collect the Pre-Reboot Diagnostic Information from the CDM-840 ....................................... C-4
C.4 Collect and Report the Post-Reboot Diagnostic Information from the CDM-840 .................... C-5
C.5 Serial Adapter Cable Fabrication Specifications Reference.................................................... C-7
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