G.703 Connectors; Balanced G.703 (Db-9F); Aux G.703 (Db-9F); Table 3-4. Balanced G.703 Connector Pinouts - Comtech EF Data CDM-625 Installation And Operation Manual

CDM-625 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 3-4. Balanced G.703 Connector Pinouts

Pin # Signal Function
(R-L) Serial G.703
1 Rx out -
Rx out +
6
2
7
3 GND
8
4
9
5 Tx in +
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 3-5. Auxiliary G.703 Connector Pinouts

Pin # Signal Function
(R-L) Serial G.703
–
1
–
6
–
2
–
7
–
3
–
8
–
4
–
9
5 –
Signal Function Signal Function
D&I or D&I++ Quad D&I
IDO - Port 2 Rx Out -
IDO + Port 2 Rx Out +
IDI - Port 2 Tx In -
IDI + Port 2 Tx In +
GND
DDO + Port 1 Rx Out +
DDO - Port 1 Rx Out -
DDI - Port 1 Tx In -
DDI + Port 1 Tx In +
Signal Function Signal Function
D&I or D&I++ Quad D&I
–
Port 4 Rx out -
–
Port 4 Rx out +
–
Port 4 Tx in -
–
Port 4 Tx in +
–
–
Port 3 Rx out -
–
Port 3 Rx out +
–
Port 3 Tx in -
– Port 3 Tx in +
3–7
Revision 13
MN-CDM625
GND
GND