Comtech EF Data CDM-710G - Manual (Page 68)

CDM-710G High-Speed Satellite Modem Revision 1
Rear Panel Connector Pinouts MN-CDM710G
4–2
CA UTIO N
Table 4-1. CDM-710G Rear Panel Connectors Reference
Connector Group Ref Des / Name Connector Type Function
IF
Sect. 4.2
J1 Tx
CDM-710G (70/140 MHz band):
BNC female
IF Output
CDM-710GL (L-Band):
Type ’N’ female
J3 Rx
CDM-710G (70/140 MHz band):
BNC female
IF Input
CDM-710GL (L-Band):
Type ’N’ female
Terrestrial Data
Sect. 4.3
J4 Ethernet RJ-45 Female 10/100 BaseT Remote Interface
J6 Async Channel
(non-operational)
9-pin Type ‘D’ female Asynchronous Engineering Channel
Utility
Sect. 4.4
P1 Alarms 15-pin Type ‘D’ male Form C Alarms (relay closures)
P2 Remote 9-pin Type ‘D’ male Serial Remote Interface (RS232/485)
J7 Ext Ref BNC female External Reference Input
Power/Ground
AC IEC Chassis prime power input
DC Terminal block Chassis prime power input
Ground #10-32 stud Common Chassis Ground
4.2 IF Connections
There may be DC voltages present on the Type ‘N’ Rx and Tx IF connectors, up to
a maximum of 48 volts.
4.2.1 J1 Tx IF Connectors
Ref Des Connector Type Description Direction
J1
CDM-710G (70/140 MHz band):
BNC female 70/140 MHz Tx IF
signal
Out
CDM-710GL (L-Band):
Type ’N’ female
L-Band Tx IF signal
4.2.2 J3 Rx IF Connectors
Ref Des Connector Type Description Direction
J2
CDM-710G (70/140 MHz band):
BNC female 70/140 MHz Rx IF
Signal
In
CDM-710GL (L-Band):
Type ’N’ female
L-Band Rx IF Signal