Aux G.703 (Db-9F); Table 3-4. Auxiliary G.703 Connector Pinouts; Table 3-5. Data Cabling Accessories - Comtech EF Data CDM-425 Installation And Operation Manual

3.2.2.2.2

Aux G.703 (DB-9F)

(R>L)
Pin #
5
9
4
8
3
7
2
6
1
3.2.2.2.3 Quad E1 Operation via the Balanced G.703 / Aux G.703
Connectors
Each adapter cable option provides for two of the four ports of the Quad E1
interface. If all four ports of Quad E1 are needed, the user will need to obtain a
quantity of (2X) of any adapter option.
For Quad E1 operation, optional Comtech EF Data cabling accessories may be purchased from
Comtech EF Data to adapt the Balanced G.703 or Auxiliary G.703 connectors as follows:
Figure CEFD Part No.
3-5 CA-0000163
3-6 CA-0000164
KT-0000122 or
3-7
KT-0020570
Rear Panel Connectors and Pinouts
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

Signal Function
Serial G.703
Tx in (+)
Tx in (-)
–
–
GND
–
–
Rx Out (+)
Rx Out (–)

Table 3-5. Data Cabling Accessories

Converts (1) 9-pin Type 'D' Connector (DB-9F) to:
(2) DB-15F connections – see Table 3-6 for the connector pinout
(2) RJ-48 F connections – see Table 3-7 for the connector pinout
(2) BNC 75Ω BNC-F connections – see Table 3-9 for the connector pinout
3–9
CDM-425 Advanced Satellite Modem
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-CDM-425
Revision 0