Comtech EF Data SDM-300A Installation And Operation Manual page 6

Preface
3.3.10.4 Receive Interface Faults ........................................................................................................... 3-41
3.3.10.5 Common Equipment Faults ...................................................................................................... 3-42
3.3.10.6 Backward Alarms ..................................................................................................................... 3-42
3.3.11 Stored Faults/Alarms .................................................................................................................... 3-45
3.3.11.1 Unavailable Seconds Fault ....................................................................................................... 3-45
3.3.12 Remote AUPC .............................................................................................................................. 3-47
3.3.12.1 Remote AUPC Configuration................................................................................................... 3-47
3.3.12.2 Remote AUPC Monitor............................................................................................................ 3-47
3.3.13 Utility............................................................................................................................................ 3-49
3.3.13.1 Utility Modulator...................................................................................................................... 3-51
3.3.13.2 Utility Demodulator ................................................................................................................. 3-54
3.3.13.3 Utility Interface ........................................................................................................................ 3-58
3.3.13.4 Utility System........................................................................................................................... 3-62
3.3.13.5 Utility Modem Type Functions ................................................................................................ 3-68
3.3.13.6 Utility Factory Setup ................................................................................................................ 3-71
3.3.14 SDM-300A Custom Modem Defaults .......................................................................................... 3-74
3.4 Software Configuration ........................................................................................................................... 3-76
3.4.1 Modem Types.................................................................................................................................... 3-76
3.4.2 Operation........................................................................................................................................... 3-77
3.4.2.1 IDR Operation .......................................................................................................................... 3-77
3.4.2.2 IBS Operation........................................................................................................................... 3-78
3.4.2.3 D&I Operation.......................................................................................................................... 3-79
3.4.2.4 ASYNC/AUPC Operation........................................................................................................ 3-80
3.4.2.5 EFD Closed Network Operation............................................................................................... 3-81
3.4.2.6 Custom Operation..................................................................................................................... 3-82
3.4.2.7 SDM-100 Emulation Operation................................................................................................ 3-83
3.4.2.8 SDM-6000 Emulation Operation.............................................................................................. 3-84
3.4.2.9 Revision Emulation Operation ................................................................................................. 3-85
3.5 Clocking Options...................................................................................................................................... 3-86
3.5.1 EIA-232, EIA-422, or V.35 Master/Master....................................................................................... 3-86
3.5.2 EIA-232, EIA-422, or V.35 Master/Slave......................................................................................... 3-86
3.5.3 IDR/IBS G.703 Master/Master ......................................................................................................... 3-87
3.5.4 IDR/IBS G.703 Master/Slave............................................................................................................ 3-87
3.5.5 D&I G.703 Master/Master ................................................................................................................ 3-93
3.6 Buffering ................................................................................................................................................... 3-93
3.6.1 .................................................................................................................................................................... 3-96
3.6.1 Buffer Size ........................................................................................................................................ 3-96
3.6.1.1 Doppler..................................................................................................................................... 3-96
3.6.1.2 Plesiochronous.......................................................................................................................... 3-97
3.6.1.3 Frame/Multiframe Length ........................................................................................................ 3-98
3.6.1.4 Multiples of the Frame Length ................................................................................................. 3-98
3.6.1.5 Total Buffer Length.................................................................................................................. 3-98
3.6.2 Converting Between Bits and Seconds.............................................................................................. 3-98
3.6.2.1 Bits to Seconds ......................................................................................................................... 3-98
3.6.2.2 Seconds to Bits ......................................................................................................................... 3-98
CHAPTER 4. THEORY OF OPERATION ...................................................................4-1
4.1 Monitor and Control (M&C) .................................................................................................................... 4-1
4.1.1 Theory of Operation ............................................................................................................................ 4-2
4.1.2 Remote Baud Rate............................................................................................................................... 4-4
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SDM-300A
Rev. 4