Table 2-9. G.703 T1/E1/Async Interface Adapter - Comtech EF Data SLM-3650 Installation And Operation Manual

SLM-3650 Satellite Modem
Installation
2.3.3.2 G.703 T1 E1/ASYNC Interface Adapter
The G.703 T1, E1/ASYNC Interface Adapter has three BNC connectors and a 15-pin
sub-miniature D connector.
J2
BNC Connectors
•
BNC connector SD and RD support G.703 unbalanced 75Ω TX and RX data
interfaces.
•
BNC connector MC supports the 75Ω unbalanced Master Clock interface.
15-Pin Connector
The 15-pin D connector supports:
•
G.703 balanced TX and RX data.
•
Balanced Master Clock.
•
Open collector Mod and Demod fault.
•
Asynchronous overhead data interfaces.
Pinouts for the 15-pin D connector are as follows:

Table 2-9. G.703 T1/E1/ASYNC Interface Adapter

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J3 J4
Pin # Signal
1 SD-
2 GND
3 RD-
4 GND
5 ETXB
6 ERXB
7 MC-
8 MC+
9 SD+
10 N.C.
11 RD+
12 ETXA
13 ERXA
14 MODFLT
15 DMSFLT
2-17
MN/SLM3650.IOM
J5
Revision 3