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CDM-625 Advanced Satellite Modem
Rear Panel Connector Pinouts
3.3.2
G.703 Connectors
3.3.2.1 Balanced G.703 Connector, DB-9F
Table 3-4. Balanced G.703 Connector Pin Assignments
Pin #
5
9
4
8
7
2
6
1
3
3.3.2.2 Auxiliary G.703 Connector, DB-9F
Table 3-5. Auxiliary G.703 Connector Pin Assignments
Pin #
5
9
4
8
7
2
6
1
3
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.
Refer to Table 3-4 for pin assignments.
Signal Function
Signal Function
Serial G.703
D&I or D&I++
Tx in +
Tx in -
Rx out +
Rx out -
GND
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. Refer to Table 3-5 for pin assignments.
Signal Function
Signal Function
Serial G.703
D&I or D&I++
-
-
-
-
-
-
-
-
-
3–7
MN-0000036 (Ref MN/CDM625.IOM)
Signal Function
Quad D&I
DDI +
Port 1 Tx In +
DDI -
Port 1 Tx In -
DDO +
Port 1 Rx Out +
DDO -
Port 1 Rx Out -
IDI +
Port 2 Tx In +
IDI -
Port 2 Tx In -
IDO +
Port 2 Rx Out +
IDO -
Port 2 Rx Out -
GND
GND
Signal Function
Quad D&I
-
Port 3 Tx in +
-
Port 3 Tx in -
-
Port 3 Rx out +
-
Port 3 Rx out -
-
Port 4 Tx in +
-
Port 4 Tx in -
-
Port 4 Rx out +
-
Port 4 Rx out -
-
GND
Revision 1
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