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

   ASM-10/8

   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/51521-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |  Purpose   | Location |         Purpose         | Location |
   |------------+----------+-------------------------+----------|
   | RS-232     |   CN1    | Transmit                |   XMT    |
   |------------+----------+-------------------------+----------|
   | AC power   |   CN2    | Digital loopback switch |   DIG    |
   |------------+----------+-------------------------+----------|
   | Ground     |   GND    | Analog loopback switch  |   ANA    |
   |------------+----------+-------------------------+----------|
   | Receive    |   RCV    | Remote loopback swtich  |   REM    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                            AGC                             |
   |------------------------------------------------------------|
   | Setting                    |             JP12              |
   |----------------------------+-------------------------------|
   |>> Forced high              |       Pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   | Normal                     |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      ANALOG LOOPBACK                       |
   |------------------------------------------------------------|
   | Setting                    |              JP8              |
   |----------------------------+-------------------------------|
   |>> Enabled                  |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   | Disabled                   |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 ASYNCHRONOUS LENGTH - bits                 |
   |------------------------------------------------------------|
   | Setting            |      SW2/S3       |      SW2/S4       |
   |--------------------+-------------------+-------------------|
   | 8bits              |        Off        |        Off        |
   |--------------------+-------------------+-------------------|
   | 9bits              |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |>> 10bits           |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   | 11bits             |        On         |        On         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              ASYNCHRONOUS LENGTH - Characters              |
   |------------------------------------------------------------|
   | Setting                      |           SW2/S2            |
   |------------------------------+-----------------------------|
   |>> 12.5%                      |             Off             |
   |------------------------------+-----------------------------|
   | 25%                          |             On              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         BAUD RATE                          |
   |------------------------------------------------------------|
   | Setting                       |            SW1             |
   |-------------------------------+----------------------------|
   | 19.2Kbps                      |             0              |
   |-------------------------------+----------------------------|
   | 14.4Kbps                      |             1              |
   |-------------------------------+----------------------------|
   |>> 9600bps                     |             2              |
   |-------------------------------+----------------------------|
   | 7200bps                       |             3              |
   |-------------------------------+----------------------------|
   | 4800bps                       |             4              |
   |-------------------------------+----------------------------|
   | 3600bps                       |             5              |
   |-------------------------------+----------------------------|
   | 2400bps                       |             6              |
   |-------------------------------+----------------------------|
   | 1200bps                       |             7              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         CD SIGNAL                          |
   |------------------------------------------------------------|
   | Setting                     |             JP4              |
   |-----------------------------+------------------------------|
   | CD normal                   |      Pins 1 & 2 closed       |
   |-----------------------------+------------------------------|
   |>> CD forced high            |      Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CHASSIS TO SIGNAL GROUND                  |
   |------------------------------------------------------------|
   | Setting                    |             JP11              |
   |----------------------------+-------------------------------|
   |>> Connected                |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   | Disconnected               |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        CLOCK SOURCE                        |
   |------------------------------------------------------------|
   | Setting      |   JP1/A   |   JP1/B   |  JP1/C   |  JP1/D   |
   |--------------+-----------+-----------+----------+----------|
   |>> Internal   |  Closed   |   Open    |   Open   |   Open   |
   |--------------+-----------+-----------+----------+----------|
   | External     |   Open    |  Closed   |   Open   |   Open   |
   |--------------+-----------+-----------+----------+----------|
   | Receive      |   Open    |   Open    |  Closed  |   Open   |
   |--------------+-----------+-----------+----------+----------|
   | Asynchronous |   Open    |   Open    |   Open   |  Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     ENABLE PUSHBUTTONS                     |
   |------------------------------------------------------------|
   | Setting                       |            JP10            |
   |-------------------------------+----------------------------|
   |>> DIG, ANA, REM enabled       |     Pins 1 & 2 closed      |
   |-------------------------------+----------------------------|
   | Disabled                      |     Pins 2 & 3 closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      LINE CONNECTION                       |
   |------------------------------------------------------------|
   | Setting                    |              JP2              |
   |----------------------------+-------------------------------|
   |>> 4-wire                   |       Pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   | 2-wire                     |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     RECEIVE IMPEDANCE                      |
   |------------------------------------------------------------|
   | Setting    |   JP7/A   |   JP7/B   |   JP7/C   |   JP7/D   |
   |------------+-----------+-----------+-----------+-----------|
   |>> 150 Omhs |  Closed   |   Open    |   Open    |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   | 300 Omhs   |   Open    |  Closed   |   Open    |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   | 600 Omhs   |   Open    |   Open    |  Closed   |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   | High       |   Open    |   Open    |   Open    |  Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      REMOTE LOOPBACK                       |
   |------------------------------------------------------------|
   | Setting                    |              JP9              |
   |----------------------------+-------------------------------|
   |>> Enabled                  |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   | Disabled                   |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    REMOTE POWER FAILURE                    |
   |------------------------------------------------------------|
   | Setting                       |            JP14            |
   |-------------------------------+----------------------------|
   |>> Transmit RPF tone           |     Pins 1 & 2 closed      |
   |-------------------------------+----------------------------|
   | Doesn't transmit RPF tone     |     Pins 2 & 3 closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       RTS/CTS DELAY                        |
   |------------------------------------------------------------|
   | Setting       |    JP3/A     |    JP3/B     |    JP3/C     |
   |---------------+--------------+--------------+--------------|
   | 0 ms          |    Closed    |     Open     |     Open     |
   |---------------+--------------+--------------+--------------|
   |>> 8 ms        |     Open     |    Closed    |     Open     |
   |---------------+--------------+--------------+--------------|
   | 64 ms         |     Open     |     Open     |    Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     TRANSMIT IMPEDANCE                     |
   |------------------------------------------------------------|
   | Setting    |   JP6/A   |   JP6/B   |   JP6/C   |   JP6/D   |
   |------------+-----------+-----------+-----------+-----------|
   |>> 150 Omhs |   Open    |   Open    |  Closed   |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   | 300 Omhs   |   Open    |  Closed   |   Open    |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   | 600 Omhs   |  Closed   |   Open    |   Open    |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   | Low        |   Open    |   Open    |   Open    |  Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       TRANSMIT LEVEL                       |
   |------------------------------------------------------------|
   | Setting    |   JP5/A   |   JP5/B   |   JP5/C   |   JP5/D   |
   |------------+-----------+-----------+-----------+-----------|
   |>> 0dBm     |  Closed   |   Open    |   Open    |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   | -3dBm      |   Open    |  Closed   |   Open    |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   | -6dBm      |   Open    |   Open    |  Closed   |   Open    |
   |------------+-----------+-----------+-----------+-----------|
   | -9dBm      |   Open    |   Open    |   Open    |  Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         V.54 DELAY                         |
   |------------------------------------------------------------|
   | Setting                    |             JP13              |
   |----------------------------+-------------------------------|
   | On                         |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |>> Off                      |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |      Function       |   Jumper/Switch    |    Position     |
   |---------------------+--------------------+-----------------|
   | Asynchronous legnth |       SW2/S1       |       Off       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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      |
   +------------------------------------------------------------+