User`s guide

MS-4900, Rev. A B-1
Appendix B. Pin-out Tables
The pin-out tables describe the signal functions of the pin sockets for the
asynchronous and synchronous serial output ports on the basic, Reed-Solomon, and
the 4-port models, and the synchronous and 10Base T output connections on the
Ethernet model.
Asynchronous
Serial Port
(RS-232)
Pin Function Signal Direction
1 +12 volts output from receiver output
2 Data output
3 Data input
4 No Connect n/a
5 Ground n/a
6 +12 volts output from receiver output
7 Request to Send input
8 Clear to Send output
9 No Connect n/a
Synchronous
Serial Port
Pin Function Signal Direction
(RS-422 on 4-Port
Daughtercard)
1 No Connect n/a
2 Data + output
DB-9 Male
Connector
3 Clock out + output
4 No connect n/a
5 Signal ground n/a
6 No Connect
7 Data - output
8 Clock - output
9 No Connect n/a