Connectors; Balanced G.703 (Db-9F); Aux G.703 (Db-9F) - Comtech EF Data CDM-625A Installation And Operation Manual

CDM-625A Advanced Satellite Modem
Rear Panel Connectors and Pinouts
3.2.2.2 G.703 Connectors

3.2.2.2.1 Balanced G.703 (DB-9F)

3.2.2.2.2 Aux G.703 (DB-9F)

The Balanced G.703 connector is a 9-pin Type 'D' female connector. It is
used for single port G.703, D&I or D&I++. When used with Quad E1
operations, this connector serves Ports 1 and 2 of the Quad E1 interface.
Table 3-3. Balanced G.703 Connector Pinouts
(R>L)
Signal Function
Pin #
Serial G.703
Tx in (+)
5
Tx in (-)
9
–
4
–
8
3 GND
–
7
–
2
Rx Out (+)
6
1 Rx Out (–)
The Auxiliary G.703 connector is a 9-pin Type 'D' female connector. When
used with Quad E1 operations, this connector serves Ports 3 and 4 of the
Quad E1 interface.
Table 3-4. Auxiliary G.703 Connector Pinouts
(R>L)
Signal Function
Pin #
Serial G.703
Tx in (+)
5
Tx in (-)
9
4
8
3 GND
7
2
Rx Out (+)
6
Rx Out (–)
1
3–9
Signal Function Signal Function
D&I or D&I++ Quad D&I
DDI (+) Port 1 Tx In (+)
DDI (–) Port 1 Tx In (–)
DDO (–) Port 1 Rx Out (–)
DDO (+) Port 1 Rx Out (+)
GND
IDI (+) Port 2 Tx In (+)
IDI (–) Port 2 Tx In (–)
IDO (+) Port 2 Rx Out (+)
IDO (–) Port 2 Rx Out (–)
Signal Function
Quad D&I
Port 3 Tx in (+)
Port 3 Tx in (–)
– Port 3 Rx Out (+)
–
Port 3 Rx Out (–)
GND
– Port 4 Tx in (+)
–
Port 4 Tx in (–)
Port 4 Rx Out (+)
Port 4 Rx Out (–)
MN-CDM625A
Revision 4
GND