Comtech EF Data SDM-300A - Manual (Page 10)

SDM-300A Satellite Modem Revision 6
Preface MN/SDM300A.IOM
vi
5.4.6.8 Utility: Factory Set-Up..............................................................................................................5–109
5.5 Custom Modem Defaults........................................................................................................................5–110
CHAPTER 6. MODEM TYPES..........................................................................................................................6–1
6.1 Modem Types..............................................................................................................................................6–1
6.1.1 IDR Operation ......................................................................................................................................6–2
6.1.2 IBS Operation.......................................................................................................................................6–3
6.1.3 D&I Operation ......................................................................................................................................6–4
6.1.4 ASYNC/AUPC Operation .....................................................................................................................6–5
6.1.5 EFD Closed Network Configuration .....................................................................................................6–6
6.1.6 Custom Operation ................................................................................................................................6–7
6.1.7 SDM-100 Emulation Operation ............................................................................................................6–8
6.1.8 SDM-6000 Emulation Operation ..........................................................................................................6–9
6.2 Reed-Solomon Modes ..............................................................................................................................6–10
CHAPTER 7. CLOCKING OPTIONS ................................................................................................................7–1
7.1 Clocking Options ........................................................................................................................................7–1
7.1.1 EIA-232, EIA-422, or V.35 Master/Master............................................................................................7–1
7.1.2 EIA-232, EIA-422, or V.35 Master/Slave..............................................................................................7–1
7.1.3 IDR/IBS G.703 Master/Master..............................................................................................................7–2
7.1.4 IDR/IBS G.703 Master/Slave................................................................................................................7–2
7.1.5 D&I G.703 Master/Master.....................................................................................................................7–7
CHAPTER 8. BUFFERING................................................................................................................................8–1
8.1 Buffering......................................................................................................................................................8–1
8.2 Buffer Size ...................................................................................................................................................8–4
8.3 Doppler ........................................................................................................................................................8–4
8.4 Plesiochronous...........................................................................................................................................8–5
8.5 Frame/Multiframe Length ...........................................................................................................................8–6
8.5.1 Multiples of the Frame Length..............................................................................................................8–6
8.5.2 Total Buffer Length...............................................................................................................................8–6
8.6 Converting Between Bits and Seconds ....................................................................................................8–6
8.6.1 Bits to Seconds ..................................................................................................................................8–6
8.6.2 Seconds to Bits ....................................................................................................................................8–6