Product specifications

CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7
Rear Panel Connectors MN/CDMQX.IOM
3–3
Table 3-1. Rear Panel External Connections
Name
Ref
Des
Conn Type Function
Base Chassis: TYPICAL ALL CONFIGURATIONS (See Sect. 3.2)
AC Plug IEC Modem Power
DC Plug (Optional – CDM-QxL) Terminal Block Modem Power
Ground #10-32 Stud Grounding
M&C 10/100BaseT RJ-45 Remote Interface
485/232 9-Pin Male Remote Interface
70/140 Tx /Rx
(CDM-Qx)
Tx BNC
RF Output 75Ω or 50Ω
Rx BNC
RF Input 75Ω or 50Ω
L-Band Tx/Rx
(CDM-QxL)
Tx Type ‘N’
RF Output 50Ω
Rx Type ‘N’
RF Input 50Ω
Ref BNC External Reference for Modem Synthesizers
Configuration #1: Modem1 with G.703 T1/E1 Balanced (DB-15); Modem2 with EIA-422 (DB-25)
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
Configuration #2: Modem 1 with G.703 EIA-422(DB-25); Modem2 with G.703 T1/E1 Unbalanced (BNC)
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
Configuration #3: Modem 1 with G.703 T1/E1 Balanced (DB-15) and Quad E1 Interface (1-4 Ports E1,w/ D&I)
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 and
Slot#4 Quad
E1
Port 1 J1 RJ-45 Balanced E1 (Full E1 or Fractional D&I)
Port 2 J2 RJ-45 Balanced E1 (Full E1 or Fractional D&I)
Port 3 J3 RJ-45 Balanced E1 (Full E1 or Fractional D&I)
Port 4 J4 RJ-45 Balanced E1 (Full E1 or Fractional D&I)
Ext Ref J5 9-Pin Female Balanced E1 clock input and output
Note: The European EMC Directive (EN55022, EN50082-1) requires using properly shielded cables for DATA I/O.