Specifications

Preface CDM-500 Satellite Modem
iv Rev. 1.3
6.10 UTIL (Utility) ............................................................................................................................................. 6–25
6.10.1 (UTIL) SET-RTC (Set real-time clock) ............................................................................................ 6–25
6.10.2 (UTIL) DISPLAY (Display brightness)............................................................................................ 6–25
6.10.3 (UTIL) MAN-1:1 (Manual 1:1 switchover)...................................................................................... 6–25
6.10.4 (UTIL) RECENTER-BUF (re-center buffer).................................................................................... 6–25
6.10.5 (UTIL) ID (Circuit ID)...................................................................................................................... 6–26
CHAPTER 7.
CLOCKING .........................................................................................7–1
7.1 Transmit Clocking........................................................................................................................................ 7–1
7.1.1 Internal Clock.......................................................................................................................................... 7–1
7.1.2 External Clock......................................................................................................................................... 7–1
7.1.3 Loop-Timed............................................................................................................................................. 7–2
7.2 Receive Clocking .......................................................................................................................................... 7–2
7.2.1 Buffer Disabled ....................................................................................................................................... 7–2
7.2.2 Buffer Enabled, Rx=Tx ........................................................................................................................... 7–2
7.2.3 Buffer Enabled, Rx<>Tx......................................................................................................................... 7–2
7.3 X.21 Notes ..................................................................................................................................................... 7–2
CHAPTER 8.
EDMAC CHANNEL.............................................................................8–1
8.1 Theory Of Operation ................................................................................................................................... 8–1
8.2 M&C Connection ......................................................................................................................................... 8–2
8.3 Setup Summary ............................................................................................................................................ 8–3
APPENDIX A.
SUMMARY OF SPECIFICATIONS .................................................... A–1
A.1 Modulator .....................................................................................................................................................A–1
A.2 Demodulator.................................................................................................................................................A–2
A.3 Data Interfaces..............................................................................................................................................A–3
A.4 Miscellaneous................................................................................................................................................A–3
A.5 Approvals......................................................................................................................................................A–3
APPENDIX B.
REMOTE CONTROL.......................................................................... B–1
B.1 Introduction..................................................................................................................................................B–1
B.2 EIA-485 .........................................................................................................................................................B–1
B.3 EIA-232 .........................................................................................................................................................B–2
B.4 Basic Protocol...............................................................................................................................................B–2