Comtech EF Data DMD2401/DMD2401L - Manual (Page 154)

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