Comtech EF Data CDM-600L, Installation And Operation Manual

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CDM-600L Satellite Modem Revision 0
Preface MN/CDM600.IOM
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9.3.2 D&I Framing............................................................................................................9–3
9.4 IDR .................................................................................................................................9–4
9.4.1 IDR Primary Data Interfaces ...................................................................................9–5
9.4.2 IDR Engineering Service Channel ..........................................................................9–5
CHAPTER 10. CLOCK MODES AND DROP AND INSERT (D&I) ....................................10–1
10.1 TRANSMIT CLOCKING ...........................................................................................10–1
10.1.1 Internal Clock ........................................................................................................10–1
10.1.2 Tx Terrestrial.........................................................................................................10–2
10.1.3 Rx Loop-Timed, RX=TX........................................................................................10–2
10.1.4 Rx Loop-Timed, RX<>TX (Asymmetric Loop Timing)...........................................10–2
10.1.5 External Clock.......................................................................................................10–2
10.1.6 External Reference ...............................................................................................10–3
10.2 RECEIVE CLOCKING ..............................................................................................10–3
10.2.1 Buffer Disabled (RX Satellite) ...............................................................................10–3
10.2.2 Buffer Enabled, TX=RX (TX Terrestrial or External Reference) ...........................10–3
10.2.3 Buffer Enabled, RX<>TX (TX Terrestrial or External Reference) .........................10–3
10.3 X.21 NOTES.............................................................................................................10–3
10.4 DROP AND INSERT ................................................................................................10–6
10.5 FRAME FORMATS ..................................................................................................10–6
10.6 TIME SLOT SELECTION .........................................................................................10–7
10.7 DROP AND INSERT CLOCKING.............................................................................10–7
10.8 RX BUFFER CLOCK = INSERT (D&I ONLY) ..........................................................10–8
CHAPTER 11. EDMAC CHANNEL ......................................................................................11–1
11.1 THEORY OF OPERATION ......................................................................................11–1
11.2 M&C CONNECTION ................................................................................................11–2
11.3 SETUP SUMMARY ..................................................................................................11–3
CHAPTER 12. AUTOMATIC UPLINK POWER CONTROL................................................12–1
12.1 INTRODUCTION ......................................................................................................12–1
12.2 SETTING AUPC PARAMETERS .............................................................................12–2
12.2.1 Target Eb/No.........................................................................................................12–2
12.2.2 Max Range............................................................................................................12–2
12.2.3 Alarm.....................................................................................................................12–3
12.2.4 Demod Unlock ......................................................................................................12–3
12.3 COMPENSATION RATE..........................................................................................12–3
12.4 MONITORING ..........................................................................................................12–4
CHAPTER 13. FLASH UPGRADING ...................................................................................13–1
CHAPTER 14. SUMMARY OF SPECIFICATIONS ..............................................................14–1
14.1 MODULATOR...........................................................................................................14–1
14.2 DEMODULATOR......................................................................................................14–4