Comtech EF Data SDM-100A - Manual (Page 12)

Table of Contents SDM-100A Satellite Modem
viii Rev. 0
A.2.2 Device Address .....................................................................................................................................A–2
A.2.3 Command/Response .............................................................................................................................A–3
A.2.4 End Character .......................................................................................................................................A–3
A.3 Configuration Commands/Responses.......................................................................................................A–4
A.3.1 Modulator..............................................................................................................................................A–4
A.3.2 Demodulator .........................................................................................................................................A–6
A.3.3 Interface ................................................................................................................................................A–8
A.3.4 System.................................................................................................................................................A–12
A.3.5 AUPC..................................................................................................................................................A–12
A.4 Status Commands/Responses ..................................................................................................................A–14
A.4.1 Configuration ......................................................................................................................................A–14
A.4.2 Error Performance...............................................................................................................................A–27
A.5 Stored Faults.............................................................................................................................................A–28
APPENDIX B. OPTIONS ...........................................................................................B–1
B.1 AUPC Interface .......................................................................................................................................... B–1
B.1.1 Theory of Operation.............................................................................................................................. B–4
B.1.1.1 Terrestrial Data Interfaces ............................................................................................................. B–4
B.1.1.2 ASYNC Data Interfaces................................................................................................................. B–4
B.1.1.3 Multiplexer Operation.................................................................................................................... B–4
B.1.1.4 Demultiplexer Operation ............................................................................................................... B–5
B.1.1.5 Buffer Operation............................................................................................................................ B–5
B.1.1.6 Loop Timing Operation ................................................................................................................. B–6
B.1.1.7 Baseband Loopback Operation...................................................................................................... B–6
B.1.1.8 Non-ASYNC Operation................................................................................................................. B–6
B.1.1.9 ASYNC Channel RS-485 2- and 4-Wire....................................................................................... B–6
B.1.1.10 Valid ASYNC Baud Rates........................................................................................................... B–7
B.1.2 Installation Instructions......................................................................................................................... B–7
B.1.2.1 Top Cover Removal....................................................................................................................... B–8
B.1.2.2 Interface Mounting Bracket Removal............................................................................................ B–8
B.1.2.3 EPROM Installation....................................................................................................................... B–8
B.1.2.4 ASYNC Interface........................................................................................................................... B–8
B.1.2.5 Installing Top Cover ...................................................................................................................... B–8
B.1.3 Front Panel Operation ........................................................................................................................... B–9
B.1.3.1 Interface Configuration.................................................................................................................. B–9
B.1.3.2 Modulation Configuration ........................................................................................................... B–10
B.1.3.3 Demodulation .............................................................................................................................. B–10
B.1.3.4 Utility/Interface............................................................................................................................ B–10
B.1.3.5 Specifications............................................................................................................................... B–11
B.1.3.6 Mechanical Specifications for Connector J1 ............................................................................... B–11
B.2 ADPCM Voice Interface .......................................................................................................................... B–12
B.2.1 Theory of Operation............................................................................................................................ B–12
B.2.1.1 Multiplexer .................................................................................................................................. B–14
B.2.1.2 Demultiplexer .............................................................................................................................. B–14
B.2.1.3 Protection Switch......................................................................................................................... B–15
B.2.1.4 RS-422 Interface.......................................................................................................................... B–15
B.2.2 Front Panel Operation ......................................................................................................................... B–16
B.2.2.1 Interface ....................................................................................................................................... B–16