E1/T1 Rj-48 Connection Via G.703 Balanced Interface Connector; Unbalanced Interface Connectors (Tx/Rx), 75Ω Bnc - Comtech EF Data CDM-570 Installation And Operation Manual

CDM-570/570L Satellite Modem with Optional IP Module
Rear Panel Connectors and Pinouts
3.3.2.2 G.703 E1/T1 RJ-48 Connection via G.703 Balanced Interface
Connector
The optional CN-0000268 Adapter, shown in
Data to adapt the G.703 Balanced E1/T1 DB-15F connector for E1/T1 operation via an RJ-48
female user interface.
Figure 3-2. CN-0000268 DB-15M
3.3.2.3 G.703 Unbalanced Interface Connectors (Tx/Rx), 75Ω BNC
Two female 75Ω BNC connectors are provided for unbalanced operation at the
G.703 data rates of E1 (2.048 Mbps):
Unbal E1 Out
Unbal E1 In
CN-0000268 Adapter Pin Assignments
Pin #
RJ-48 (User Side)
1
2
3
4
5
6
Pins 7 and 8 on the RJ-48 side, and pins 5-8, 10, and 12-15 on the
DB-15 side, are not used.
BNC Connector
Rx G.703 (Unbalanced E1)
Tx G.703 (Unbalanced E1)
F igure 3-2, may be purchased from Comtech EF
2 1
DB-15M (Modem Side)
9
1
2
11
3
4
RJ-48F Adapter for E1/T1 Operation
Description
3–6
Revision 12
MN/CDM570L.IOM
Signal Name
Tx+
Tx-
GND
Rx+
Rx-
GND
Direction
Out
In