SLM-3650 Satellite Modem
Revision 3
Installation
MN/SLM3650.IOM
2-17
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.
BNC Connectors
•
BNC connector SD and RD support G.703 unbalanced 75
Ω
TX and RX data
interfaces.
•
BNC connector MC supports the 75
Ω
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
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
J2
J3
J4
J5
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com