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

   ASM-11

   Modem Type               Data (synchronous/asynchronous)       
   Maximum Data Rate        19.2Kbps                              
   Data Bus                 External                              
   Data Modulation Protocol Proprietary                           

<gopher://bitreich.org/I/th99/t/P-R/51522-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |    Purpose     | Location |       Purpose       | Location |
   |----------------+----------+---------------------+----------|
   | Line in        |   CN1    | Fuse                |   FUSE   |
   |----------------+----------+---------------------+----------|
   | RS-232/422     |   CN2    | ANA/NOR/REM switch  |   SW1    |
   |----------------+----------+---------------------+----------|
   | AC power       |   CN3    |                     |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                            AGC                             |
   |------------------------------------------------------------|
   | Setting                    |             JP10              |
   |----------------------------+-------------------------------|
   |>> Forced high              |       Pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   | Normal                     |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      ANALOG LOOPBACK                       |
   |------------------------------------------------------------|
   | Setting                    |              JP6              |
   |----------------------------+-------------------------------|
   |>> Enabled                  |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   | Disabled                   |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 ASYNCHRONOUS LENGTH - bits                 |
   |------------------------------------------------------------|
   | Setting            |      SW3/S3       |      SW3/S4       |
   |--------------------+-------------------+-------------------|
   | 8bits              |        Off        |        Off        |
   |--------------------+-------------------+-------------------|
   | 9bits              |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |>> 10bits           |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   | 11bits             |        On         |        On         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              ASYNCHRONOUS LENGTH - Characters              |
   |------------------------------------------------------------|
   | Setting                      |           SW3/S2            |
   |------------------------------+-----------------------------|
   |>> 12.5%                      |             Off             |
   |------------------------------+-----------------------------|
   | 25%                          |             On              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         BAUD RATE                          |
   |------------------------------------------------------------|
   | Setting                       |            SW2             |
   |-------------------------------+----------------------------|
   | 19.2Kbps                      |             0              |
   |-------------------------------+----------------------------|
   | 14.4Kbps                      |             1              |
   |-------------------------------+----------------------------|
   |>> 9600bps                     |             2              |
   |-------------------------------+----------------------------|
   | 7200bps                       |             3              |
   |-------------------------------+----------------------------|
   | 4800bps                       |             4              |
   |-------------------------------+----------------------------|
   | 3600bps                       |             5              |
   |-------------------------------+----------------------------|
   | 2400bps                       |             6              |
   |-------------------------------+----------------------------|
   | 1200bps                       |             7              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         CD SIGNAL                          |
   |------------------------------------------------------------|
   | Setting                     |             JP2              |
   |-----------------------------+------------------------------|
   | CD normal                   |      Pins 1 & 2 closed       |
   |-----------------------------+------------------------------|
   |>> CD forced high            |      Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CHASSIS TO SIGNAL GROUND                  |
   |------------------------------------------------------------|
   | Setting                    |              JP9              |
   |----------------------------+-------------------------------|
   |>> Connected                |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   | Disconnected               |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    ENABLE TOGGLE SWITCH                    |
   |------------------------------------------------------------|
   | Setting                      |             JP8             |
   |------------------------------+-----------------------------|
   |>> ANA, REM enabled           |      Pins 2 & 3 closed      |
   |------------------------------+-----------------------------|
   | Disabled                     |      Pins 1 & 2 closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     RECEIVE IMPEDANCE                      |
   |------------------------------------------------------------|
   | Setting                    |              JP5              |
   |----------------------------+-------------------------------|
   |>> 150 Omhs                 |       Pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   | High                       |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      REMOTE LOOPBACK                       |
   |------------------------------------------------------------|
   | Setting                    |              JP7              |
   |----------------------------+-------------------------------|
   |>> Enabled                  |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   | Disabled                   |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       RTS/CTS DELAY                        |
   |------------------------------------------------------------|
   | Setting       |    JP1/A     |    JP1/B     |    JP1/C     |
   |---------------+--------------+--------------+--------------|
   | 0ms           |    Closed    |     Open     |     Open     |
   |---------------+--------------+--------------+--------------|
   |>> 8ms         |     Open     |    Closed    |     Open     |
   |---------------+--------------+--------------+--------------|
   | 64ms          |     Open     |     Open     |    Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     TRANSMIT IMPEDANCE                     |
   |------------------------------------------------------------|
   | Setting                    |              JP4              |
   |----------------------------+-------------------------------|
   |>> 150omhs                  |       Pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   | Low                        |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       TRANSMIT LEVEL                       |
   |------------------------------------------------------------|
   |          Setting           |              JP3              |
   |----------------------------+-------------------------------|
   |>> 0dBm                     |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   | -6dBm                      |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGERABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function             | Jumper/Switch | Position |
   |---------------------------------+---------------+----------|
   |   Factory configured - Do not   |    SW3/S1     | Not used |
   |              alter              |               |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED  | Color  |  Status  |            Condition            |
   |------+--------+----------+---------------------------------|
   | PWR  | Green  |    On    |           Power is on           |
   |------+--------+----------+---------------------------------|
   | PWR  | Green  |   Off    |          Power is off           |
   |------+--------+----------+---------------------------------|
   | RTS  | Yellow |    On    |     Request to Send enabled     |
   |------+--------+----------+---------------------------------|
   | RTS  | Yellow |   Off    |    Request to Send disabled     |
   |------+--------+----------+---------------------------------|
   |  TD  | Yellow |    On    |  Modem is transmitting steady   |
   |      |        |          |              SPACE              |
   |------+--------+----------+---------------------------------|
   |  TD  | Yellow |   Off    | Modem is not transmitting data  |
   |------+--------+----------+---------------------------------|
   |  TD  | Yellow | Blinking |   Modem is transmitting data    |
   |------+--------+----------+---------------------------------|
   |  RD  | Yellow |    On    | Modem is receiving steady SPACE |
   |------+--------+----------+---------------------------------|
   |  RD  | Yellow |   Off    |   Modem is not receiving data   |
   |------+--------+----------+---------------------------------|
   |  RD  | Yellow | Blinking |     Modem is receiving data     |
   |------+--------+----------+---------------------------------|
   | DCD  | Yellow |    On    |     Carrier signal detected     |
   |------+--------+----------+---------------------------------|
   | DCD  | Yellow |   Off    |   Carrier signal not detected   |
   |------+--------+----------+---------------------------------|
   | TEST |  Red   |    On    |       Modem in test mode        |
   |------+--------+----------+---------------------------------|
   | TEST |  Red   |   Off    |     Modem not in test mode      |
   +------------------------------------------------------------+