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CDM-Qx Satellite Modem Revision 5
External Connections MN/CDMQx.IOM
4–5
Table 4-1. Modem Rear Panel Connectors
Name Ref. Desig. Connector Type Function
Configuration #1 - Modem1 with G.703 T1/E1 Balanced (DB-15) Modem2 with EIA-422 (DB-25)
M&C 10/100BaseT RJ-45 Remote Interface
485/232 9-Pin D Male Remote Interface
Slot #1 Mod:
Alarms 15-Pin Male Form-C Alarms
G.703 15-Pin Female Balanced G.703 Data Input
Slot #2 Demod:
Alarms 15-Pin Male Form-C Alarms
G.703 15-Pin Female Balanced G.703 Data Output, or Input/Output
Slot #3 Mod:
Alarms 15-Pin Male Form-C Alarms
EIA-530 25-Pin Female Data Input
Slot #4 Demod:
Alarms 15-Pin Male Form-C Alarms
EIA-530 25-Pin Female Data Output, or Input/Output
70/140 Tx /Rx:
Tx BNC
RF Output 75 or 50Ω
Rx BNC
RF Input 75 or 50Ω
Ref BNC External Reference for Modem Synthesizers
AC Plug IEC Modem Power
Ground #10-32 Stud Grounding
Configuration #2 - Modem 1 with G.703 EIA-422(DB-25) Modem2 with G.703 T1/E1 Unbalanced (BNC)
M&C 10/100BaseT RJ-45 Remote Interface
485/232 9-Pin D Male Remote Interface
Slot #1 Mod:
Alarms 15-Pin Male Form-C Alarms
G.703 BNC Unbalanced G.703 Data Output (incorrect slot for IO)
Slot #2 Demod:
Alarms 15-Pin Male Form-C Alarms
G.703 BNC Unbalanced G.703 Data input
Slot #3 Mod:
Alarms 15-Pin Male Form-C Alarms
EIA-530 25-Pin Female Data Input
Slot #4 Demod:
Alarms 15-Pin Male Form-C Alarms
EIA-530 25-Pin Female Data Output, or Input/Output
70/140 Tx /Rx:
Tx BNC
RF Output 75 or 50Ω
Rx BNC
RF Input 75 or 50Ω
Ref BNC External Reference for Modem Synthesizers
AC Plug IEC Modem Power
Ground #10-32 Stud Grounding