Comtech EF Data MM200 - Manual (Page 79)

MM200 High-Speed Microwave Modem Electrical Interfaces
TM086 - Rev. 4.1 5-3
5.3 Terminal Port (I/O)
The Terminal Port (J2) can be used for the monitor & control functions of the unit. The physical
interface is a female 9-Pin D-Sub Connector. This bi-directional port complies with RS-232
Electrical Specifications. The pinouts are listed in Table 5-4a and 5-4b. S3 can be found on the
M&C Card by removing the top cover.
Table 5-4a. J2 - RS-232 Terminal Port - 9-Pin ‘D’ Female
S3 – Switch 1 & 2 Off, Switch 3 & 4 On
Pin No. Signal Name Description Direction
2 TxD Transmit Data Output
3 RxD Receive Data Input
5 GND Ground ---
Table 5-4b. J2 - RS-232 Terminal Port - 9-Pin ‘D’ Female
S3 – Switch 1 & 2 On, Switch 3 & 4 Off
Pin No. Signal Name Description Direction
2 RxD Receive Data Input
3 TxD Transmit Data Output
5 GND Ground ---
5.4 Remote Port (I/O)
The Remote Port (J3) can be used for the monitor & control functions of the unit. The physical
interface is a female 9-Pin D-Sub Connector. This bi-directional port complies with RS-485
Electrical Specifications. Pin-outs are listed in Table 5-5.
Table 5-5. J3 - RS-485 Remote Control - 9-Pin ‘D’ Female
Pin No. Signal Description Direction
1 Tx (B) Transmit Data (+) Output
5 GND Ground -
6 Tx (A) Transmit Data (-) Output
8 Rx (B) Receive Data (+) Input
9 Rx (A) Receive Data (-) Input