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

   SRM-8H (RJ-11)

   Card Type         Short Range Modem                            
   Chip Set          Unidentified                                 
   I/O Options       25-pin DTE port, RJ-11 connector, terminal   
                     block                                        
   Wiring Type       Unshielded twisted pair                      
   Maximum Data Rate 64Kbps                                       
   Data Bus          External                                     

<gopher://bitreich.org/I/th99/t/P-R/54935-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |        Function         |     Label     | Function | Label |
   |------------------------------------------------------------|
   | DTE serial port     |   CN1   | Terminal block   |   CN3   |
   | (25-pin connector)  |         |                  |         |
   |---------------------+---------+------------------+---------|
   | RJ-11 connector     |   CN2   |                  |         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                 Setting                 | Label | Position |
   |-----------------------------------------+-------+----------|
   | i 64Kbps connection speed enabled       | SW2/4 |   Off    |
   |-----------------------------------------+-------+----------|
   | 56Kbps connection speed enabled         | SW2/4 |    On    |
   |-----------------------------------------+-------+----------|
   | i Asynchronous stop bit shortening set  | SW2/5 |   Off    |
   | to 25%                                  |       |          |
   |-----------------------------------------+-------+----------|
   | Asynchronous stop bit shortening set to | SW2/5 |    On    |
   | 12.5%                                   |       |          |
   |-----------------------------------------+-------+----------|
   | i Carrier forced high                   | SW3/2 |    On    |
   |-----------------------------------------+-------+----------|
   | Carrier follows RTS signal              | SW3/2 |   Off    |
   |-----------------------------------------+-------+----------|
   | i DTE control of analog loop disabled   | SW3/3 |   Off    |
   |-----------------------------------------+-------+----------|
   | DTE control of analog loop enabled      | SW3/3 |    On    |
   |-----------------------------------------+-------+----------|
   | i DTE control of remote digital loop    | SW3/4 |   Off    |
   | disabled                                |       |          |
   |-----------------------------------------+-------+----------|
   | DTE control of remote digital loop      | SW3/4 |    On    |
   | enabled                                 |       |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   LOOPBACK TEST SELECTOR                   |
   |------------------------------------------------------------|
   |                 Function                 |       SW1       |
   |------------------------------------------+-----------------|
   |     Activates local analog loopback      |        1        |
   |------------------------------------------+-----------------|
   | Normal operation. Loopback not activated |        2        |
   |------------------------------------------+-----------------|
   |    Remote digital loopback initiated     |        3        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   TRANSMIT CLOCK SOURCE                    |
   |------------------------------------------------------------|
   |               Source               | SW2/1 | SW2/2 | SW2/3 |
   |------------------------------------+-------+-------+-------|
   |     i Transmit clock generated     |  Off  |  Off  |  Off  |
   |             internally             |       |       |       |
   |------------------------------------+-------+-------+-------|
   |    Transmit clock derived from     |  Off  |  Off  |  On   |
   |        receive line signal         |       |       |       |
   |------------------------------------+-------+-------+-------|
   |    Transmit clock derived from     |  On   |  Off  |  Off  |
   |         terminal interface         |       |       |       |
   |------------------------------------+-------+-------+-------|
   |     Asynchronous mode enabled      |  Off  |  On   |  Off  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               CHARACTER LENGTH (ASYNC MODE)                |
   |------------------------------------------------------------|
   |             Setting             |   SW2/6    |    SW3/1    |
   |---------------------------------+------------+-------------|
   |             8 bits              |    Off     |     Off     |
   |---------------------------------+------------+-------------|
   |             9 bits              |    Off     |     On      |
   |---------------------------------+------------+-------------|
   |            i 10 bits            |     On     |     Off     |
   |---------------------------------+------------+-------------|
   |             11 bits             |     On     |     On      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED | Color  | Status |             Condition              |
   |-----+--------+--------+------------------------------------|
   | PWR | Green  |   On   |            Power is on             |
   |-----+--------+--------+------------------------------------|
   | PWR | Green  |  Off   |            Power is off            |
   |-----+--------+--------+------------------------------------|
   | TST |  Red   |   On   |  Device is conducting a loopback   |
   |     |        |        |                test                |
   |-----+--------+--------+------------------------------------|
   | TST |  Red   |  Off   |     Device is not conducting a     |
   |     |        |        |           loopback test            |
   |-----+--------+--------+------------------------------------|
   | CD  | Yellow |   On   |        Carrier signal high         |
   |-----+--------+--------+------------------------------------|
   | CD  | Yellow |  Off   |         Carrier signal low         |
   |-----+--------+--------+------------------------------------|
   | TD  | Yellow |   On   |    Device is transmitting data     |
   |-----+--------+--------+------------------------------------|
   | TD  | Yellow |  Off   |  Device is not transmitting data   |
   +------------------------------------------------------------+