Comtech EF Data CDM-570L - Page 85

CDM-570/570L Satellite Modem with Optional IP Module Revision 4
Preface MN/CDM570L.IOM
vii
Chapter 9. CLOCKING MODES ...........................................................................................9–1
9.1 TRANSMIT CLOCKING .................................................................................................9–1
9.1.1 Internal Clock ..........................................................................................................9–1
9.1.2 Tx Terrestrial...........................................................................................................9–2
9.1.3 Rx Loop-Timed, Rx=Tx ...........................................................................................9–2
9.1.4 Rx Loop-Timed, Rx<>Tx (Asymmetric Loop Timing)..............................................9–2
9.2 RECEIVE CLOCKING....................................................................................................9–3
9.2.1 Buffer Disabled (Rx Satellite)..................................................................................9–3
9.2.2 Buffer Enabled, Tx=Rx............................................................................................9–3
9.2.3 Buffer Enabled, Rx<>Tx..........................................................................................9–3
9.3 X.21 NOTES ..................................................................................................................9–3
Chapter 10. EDMAC CHANNEL .......................................................................................10–1
10.1 THEORY OF OPERATION ......................................................................................10–1
10.2 M&C CONNECTION ................................................................................................10–2
10.3 SETUP SUMMARY ..................................................................................................10–3
Chapter 11. AUTOMATIC UPLINK POWER CONTROL.................................................11–1
11.1 INTRODUCTION ......................................................................................................11–1
11.2 SETTING AUPC PARAMETERS .............................................................................11–2
11.2.1 Target Eb/No.........................................................................................................11–2
11.2.2 Max Range............................................................................................................11–2
11.2.3 Alarm.....................................................................................................................11–3
11.2.4 Demod Unlock ......................................................................................................11–3
11.3 COMPENSATION RATE..........................................................................................11–3
11.4 MONITORING ..........................................................................................................11–4
Chapter 12. SUMMARY OF SPECIFICATIONS ...............................................................12–1
12.1 MODULATOR...........................................................................................................12–1
12.2 DEMODULATOR......................................................................................................12–3
12.3 AUTOMATIC UPLINK POWER CONTROL .............................................................12–5
12.4 DATA AND MISCELLANEOUS INTERFACES ........................................................12–6
12.5 DATA RATE RANGES .............................................................................................12–6
12.6 MISCELLANEOUS ...................................................................................................12–7
12.7 APPROVALS............................................................................................................12–7