
DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem
Electrical Interfaces
TM065 - Rev. 3.3
5-15
5.5.11 ASYNC (J15)
The Asynchronous Interface Port (J15) is a 9-Pin Female “D” Connector. Refer to Table 5-13 for
connector pinouts. Refer to Section 5.8 for configuration switch settings.
Table 5-13. Asynchronous Interface - 9-Pin Female “D” Connector (J15)
Pin Number
Signal
Description
Direction
1
TX-485-B
Transmit Data RS485 (+)
Input
2
TXD-232
Transmit Data RS232
Input
3
RXD-232
Receive Data RS232
Output
5
GND
Ground
–
4
NC
Not Connected
–
9
RX-485-A
Receive Data 485 (-)
Output
8
RX-485-B/CTS
Receive Data 485 (+)
Output
6
TX-485-A
Transmit Data 485 (-)
Input
7
RTS
Request to Send
Input
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