Connections; Unbal E1 Out/In G.703 Connectors (Tx/Rx), 75Ω Bnc; Balanced E1/T1 G.703 Connector, Db-15F; Table 3-4. Balanced E1/T1 G.703 Connector Pin Assignments - Comtech EF Data CDM-570A Installation And Operation Manual

3.2.2.3 G.703 Connections
Unbal E1 Out/In G.703 Connectors (Tx/Rx), 75Ω BNC
3.2.2.3.1
Two female 75Ω BNC connectors are provided for G.703 unbalanced operation at
the E1 data rate (2.048 Mbps):
Unbal E1 |Out
Unbal E1 | In
3.2.2.3.2

Balanced E1/T1 G.703 Connector, DB-15F

Rear Panel Connectors and Pinouts
CDM-570A/570AL Satellite Modem with Optional Packet Processor
BNC Connector
Rx G.703 (Unbalanced E1)
Tx G.703 (Unbalanced E1)
This 15-pin 'D' type female (DB-15F) connector is used for G.703 balanced
operation at the data rates of E1 (2.048 Mbps) or T1 (1.544 Mbps).

Table 3-4. Balanced E1/T1 G.703 Connector Pin Assignments

Pin # Signal Function
8 Not Used
15 Not Used
7 Not Used
14 Not Used
6 Not Used
13 Not Used
5 Not Used
12 Not Used
4 Ground
11 Rx G.703 +
3 Rx G.703 -
10 Not Used
2 Ground
9 Tx G.703 +
1 Tx G.703 -
Description
Name
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
GND ---
Rx G.703 Out Out
Rx G.703 Out Out
--- ---
GND ---
Tx G.703 In In
Tx G.703 In In
3–9
Revision 5
Direction
Out
In
Direction
MN-CDM570A