Comtech EF Data CDM-840 - Manual (Page 11)

CDM-840 Remote Router Revision 2
Table of Contents MN-CDM840
vii
CHAPTER 7.
SERIAL-BASED REMOTE PRODUCT MANAGEMENT ............................... 7–1
7.1 Introduction ....................................................................................................................... 7–1
7.2 Remote Commands and Queries Overview .......................................................................... 7–3
7.2.1 Basic Protocol ........................................................................................................................... 7–3
7.2.2 Packet Structure ....................................................................................................................... 7–4
7.2.2.1 Start of Packet ................................................................................................................... 7–4
7.2.2.2 Target Address .................................................................................................................. 7–5
7.2.2.3 Address Delimiter .............................................................................................................. 7–5
7.2.2.4 Instruction Code ................................................................................................................ 7–5
7.2.2.5 Instruction Code Qualifier ................................................................................................. 7–6
7.2.2.6 Optional Message Arguments ........................................................................................... 7–7
7.2.2.7 End of Packet .................................................................................................................... 7–7
7.3 Remote Commands and Queries ......................................................................................... 7–8
7.3.2 Transmit (Tx) Parameters Commands and Queries................................................................ 7–11
7.3.3 Receive (Rx) Parameters Commands and Queries ................................................................. 7–13
7.3.4 Demodulator Status Commands and Queries ........................................................................ 7–15
7.3.5 Transmit (Tx) BERT Command or Query ................................................................................. 7–16
7.3.6 Receive (Rx) BERT Command or Query .................................................................................. 7–16
7.3.7 BUC (Block Upconverter) Parameters Commands and Queries ............................................. 7–17
7.3.8 LNB (Low-Noise Block Downconverter) Parameters Commands and Queries ...................... 7–18
7.3.9 Unit Parameters Commands and Queries .............................................................................. 7–19
7.3.10 Bulk Configuration String Commands ..................................................................................... 7–27
7.3.11 Redundancy Commands and Queries .................................................................................... 7–27
7.3.12 Miscellaneous Utility Commands and Queries ....................................................................... 7–28
APPENDIX A.
REFERENCE DOCUMENTATION .............................................................. A–1
A.1 FEC (FORWARD ERROR CORRECTION) OPTIONS .................................................................. A–2
A.2 Adaptive Coding and Modulation / Variable Coding and Modulation (ACM/VCM) ............... A–3
A.3 Bridge Point-to-Multipoint (BPM) Operation ...................................................................... A–4
A.4 E1 WAN/RAN Optimization ................................................................................................ A–4
A.5 Entry Channel Mode (ECM) ................................................................................................ A–5
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