Comtech EF Data CDM-570L Installation And Operation Manual page 11

CDM-570L Satellite Modem with IP Module
7.5.2 TPC modes available in the CDM-570L ........................................................................ 89
7.5.3 End-to-End Processing Delay........................................................................................ 90
7.5.4 Comparison of all TPC Modes....................................................................................... 91
7.6 UNCODED OPERATION (NO FEC) .................................................................................... 92
CHAPTER 8. OFFSET QPSK OPERATION ........................................................................... 103
CHAPTER 9. CLOCKING MODES.......................................................................................... 105
9.1 TRANSMIT CLOCKING ..................................................................................................... 105
9.1.1 Internal Clock............................................................................................................... 105
9.1.2 Tx Terrestrial................................................................................................................ 106
9.1.3 Rx Loop-Timed, Rx=Tx................................................................................................ 106
9.1.4 Rx Loop-Timed, Rx<>Tx (Asymmetric Loop Timing)................................................... 106
9.2 RECEIVE CLOCKING........................................................................................................ 107
9.2.1 Buffer Disabled (Rx Satellite)....................................................................................... 107
9.2.2 Buffer Enabled, Tx=Rx ................................................................................................ 107
9.2.3 Buffer Enabled, Rx<>Tx .............................................................................................. 107
9.3 X.21 NOTES....................................................................................................................... 107
CHAPTER 10. EDMAC CHANNEL ......................................................................................... 111
10.1 THEORY OF OPERATION .............................................................................................. 111
10.2 M&C CONNECTION ........................................................................................................ 112
10.3 SETUP SUMMARY .......................................................................................................... 113
CHAPTER 11. AUTOMATIC UPLINK POWER CONTROL................................................... 115
11.1 INTRODUCTION.............................................................................................................. 115
11.2 SETTING AUPC PARAMETERS ..................................................................................... 116
11.2.1 Target Eb/No ............................................................................................................. 116
11.2.2 Max Range ................................................................................................................ 116
11.2.3 Alarm ......................................................................................................................... 117
11.2.4 Demod Unlock ........................................................................................................... 117
11.3 COMPENSATION RATE.................................................................................................. 117
11.4 MONITORING .................................................................................................................. 118
CHAPTER 12. SUMMARY OF SPECIFICATIONS ................................................................. 119
12.1 MODULATOR .................................................................................................................. 119
12.2 DEMODULATOR ............................................................................................................. 121
12.3 DATA AND MISCELLANEOUS INTERFACES................................................................ 123
12.4 AUTOMATIC UPLINK POWER CONTROL ..................................................................... 124
12.5 DATA RATE RANGES ..................................................................................................... 124
12.6 MISCELLANEOUS........................................................................................................... 125
12.7 APPROVALS.................................................................................................................... 125
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MN/CDM570L.IOM