RAD DATA COMMUNICATIONS
=======================

   SRM-6FC

   Modem Type               Data (Asynchronous)                   
   Maximum Data Rate        9600bps                               
   Data Bus                 External                              
   Data Modulation Protocol Proprietary                           

<gopher://bitreich.org/I/th99/t/P-R/51508-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Purpose      | Location |      Purpose      | Location |
   |------------------+----------+-------------------+----------|
   | RS-232/422       |   CN1    | Ground            |   GND    |
   |------------------+----------+-------------------+----------|
   | Receive positive |   +RCV   | Transmit positive |   +XMT   |
   |------------------+----------+-------------------+----------|
   | Receive negative |   -RCV   | Transmit negative |   -XMT   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    ASYNCHRONOUS LENGTH                     |
   |------------------------------------------------------------|
   | Setting    |         JP1/A         |         JP1/B         |
   |------------+-----------------------+-----------------------|
   | 8-bits     | Position 1 & 2 closed | Position 1 & 2 closed |
   |------------+-----------------------+-----------------------|
   | 9-bits     | Position 1 & 2 closed | Position 2 & 3 closed |
   |------------+-----------------------+-----------------------|
   |>> 10-bits  | Position 2 & 3 closed | Position 1 & 2 closed |
   |------------+-----------------------+-----------------------|
   | 11-bits    | Position 2 & 3 closed | Position 2 & 3 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         BAUD RATE                          |
   |------------------------------------------------------------|
   | Setting                       |            SW1             |
   |-------------------------------+----------------------------|
   |>> 9600bps                     |             0              |
   |-------------------------------+----------------------------|
   | 7200bps                       |             1              |
   |-------------------------------+----------------------------|
   | 4800bps                       |             2              |
   |-------------------------------+----------------------------|
   | 3600bps                       |             3              |
   |-------------------------------+----------------------------|
   | 2400bps                       |             4              |
   |-------------------------------+----------------------------|
   | 1800bps                       |             5              |
   |-------------------------------+----------------------------|
   | 1200bps                       |             6              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      DCE/DTE SELECTOR                      |
   |------------------------------------------------------------|
   | Setting                       |            SW2             |
   |-------------------------------+----------------------------|
   |>> DCE                         |             On             |
   |-------------------------------+----------------------------|
   | DTE                           |            Off             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        FLOW CONTROL                        |
   |------------------------------------------------------------|
   | Setting    |         JP1/C         |         JP1/D         |
   |------------+-----------------------+-----------------------|
   |>> RTS/DCD  | Position 2 & 3 closed | Position 1 & 2 closed |
   |------------+-----------------------+-----------------------|
   | DTR/DSR    | Position 1 & 2 closed | Position 2 & 3 closed |
   |------------+-----------------------+-----------------------|
   | Illegal    | Position 2 & 3 closed | Position 2 & 3 closed |
   |------------+-----------------------+-----------------------|
   | Illegal    | Position 1 & 2 closed | Position 1 & 2 closed |
   +------------------------------------------------------------+