3 g.703 connections, 2 balanced e1/t1 g.703 connector, db-15f – Comtech EF Data CDM-570A User Manual
Page 71
CDM-570A/570AL Satellite Modem with Optional Packet Processor
MN-CDM570A
Rear Panel Connectors and Pinouts
Revision 2
3–9
3.2.2.3 G.703 Connections
3.2.2.3.1 Unbal E1 Out/In G.703 Connectors (Tx/Rx), 75Ω BNC
Two female 75Ω BNC connectors are provided for G.703 unbalanced operation at
the E1 data rate (2.048 Mbps):
BNC Connector
Description
Direction
Unbal E1 |Out
Rx G.703 (Unbalanced E1)
Out
Unbal E1 | In
Tx G.703 (Unbalanced E1)
In
3.2.2.3.2 Balanced E1/T1 G.703 Connector, DB-15F
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
Name
Direction
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
GND
---
11
Rx G.703 +
Rx G.703 Out
Out
3 Rx G.703 -
Rx G.703 Out
Out
10
Not Used
---
---
2 Ground
GND
---
9
Tx G.703 +
Tx G.703 In
In
1 Tx G.703 -
Tx G.703 In
In