Comtech EF Data SDM-300A Installation And Operation Manual page 8

Preface
A.1.3.2.6 Backward Alarm ................................................................................................................. A-14
A.1.3.3 D&I Framing Formats ............................................................................................................. A-15
A.1.3.4 D&I Modem Defaults.............................................................................................................. A-18
A.1.4 Asynchronous Interface/AUPC........................................................................................................ A-19
A.1.4.1 AUPC ...................................................................................................................................... A-21
A.1.4.1.1 Self-Monitoring Local Modem AUPC Control................................................................... A-22
A.1.4.2 Remote AUPC......................................................................................................................... A-23
A.1.4.3 Theory of Operation ................................................................................................................ A-23
A.1.4.3.1 Terrestrial Data Interfaces................................................................................................... A-23
A.1.4.3.2 ASYNC Data Interfaces...................................................................................................... A-23
A.1.4.3.3 MUX Operation .................................................................................................................. A-24
A.1.4.3.4 DEMUX Operation ............................................................................................................. A-24
A.1.4.3.5 Buffer Operation ................................................................................................................. A-24
A.1.4.3.6 Loop Timing Operation....................................................................................................... A-25
A.1.4.3.7 Baseband Loopback Operation ........................................................................................... A-25
A.1.4.3.8 Non-ASYNC Operation ...................................................................................................... A-26
A.1.4.3.9 ASYNC Channel EIA-485 2- and 4-Wire Operation.......................................................... A-26
A.1.4.3.10 Valid ASYNC Baud Rates ................................................................................................ A-27
A.1.4.4 Front Panel Operation.............................................................................................................. A-27
A.1.4.5 ASYNC Remote Operation ..................................................................................................... A-28
A.1.4.5.1 Configuration #1 (Local EIA-232 to Remote EIA-232) ..................................................... A-30
A.1.4.5.2 Configuration #2 (Local EIA-232 to Remote EIA-485 [4-Wire]) ...................................... A-31
A.1.4.5.3 Configuration #3 (Local EIA-232 to Remote EIA-485 [2-Wire]) ...................................... A-32
A.1.4.5.4 Configuration #4 (Local EIA-485 [4-Wire] to Remote EIA-232) ...................................... A-33
A.1.4.5.5 Configuration #5 (Local EIA-485 [4-Wire] to Remote EIA-485 [4-Wire])....................... A-34
A.1.4.5.6 Configuration #6 (Local EIA-485 [4-Wire] to Remote EIA-485 [2-Wire])........................ A-35
A.1.4.5.7 Configuration #7 (Local EIA-485 [2-Wire] to Remote EIA-232) ...................................... A-36
A.1.4.5.8 Configuration #8 (Local EIA-485 [2-Wire] to Remote EIA-485 [4-Wire])........................ A-38
A.1.4.6 ASYNC/AUPC Modem Defaults............................................................................................ A-40
A.1.4.7 Sequential Decoder.................................................................................................................. A-41
A.1.4.7.1 Theory of Operation............................................................................................................ A-42
A.1.4.8 Viterbi Decoder ....................................................................................................................... A-43
A.1.4.8.1 Specifications ...................................................................................................................... A-44
A.1.4.8.2 Theory of Operation............................................................................................................ A-44
A.1.4.9 Reed-Solomon Decoder........................................................................................................... A-45
A.1.5 IDR................................................................................................................................................... A-46
A.1.5.1 IDR Specifications................................................................................................................... A-49
A.1.5.2 IDR Modem Defaults .............................................................................................................. A-50
A.1.5.3 IBS Specification s .................................................................................................................. A-53
A.1.5.4 IBS Modem Defaults............................................................................................................... A-54
A.1.6 Asymmetrical Loop Timing ............................................................................................................. A-55
A.1.7 G.703................................................................................................................................................ A-58
A.1.7.1 G.703 Specifications................................................................................................................ A-59
A.1.8 Variable Data Rates.......................................................................................................................... A-59
A.2 Conventional Options......................................................................................................................... A-60
A.2.1 Reed-Solomon Codec....................................................................................................................... A-60
A.2.1.1 Specifications .......................................................................................................................... A-61
A.2.1.2 Theory of Operation ................................................................................................................ A-62
A.2.1.3 Reed-Solomon Encoder........................................................................................................... A-62
A.2.1.4 Reed-Solomon Decoder........................................................................................................... A-65
A.2.1.5 Unpacking ............................................................................................................................... A-67
A.2.1.6 Installation ............................................................................................................................... A-67
A.3 Software and Hardware Installation/Upgrades ............................................................................... A-69
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SDM-300A
Rev. 4