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

   CMN-C6AC, CMN-C6ACU

   Card Type         Modem (asynchronous)                         
   Chipset           Unidentified                                 
   Maximum Data Rate 19.2Kbps x 2                                 
   Data Modulation   Unidentified                                 
   Data Bus          Proprietary                                  

<gopher://bitreich.org/I/th99/t/P-R/53563-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function       | Label |      Function       | Label |
   |----------------------+-------+---------------------+-------|
   | Telephone line 1 out |  CN1  | Telephone line 2    |  CN3  |
   |                      |       | out                 |       |
   |----------------------+-------+---------------------+-------|
   | Serial port data 1   |  CN2  | Serial data port 2  |  CN4  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Setting             | Label |     Position      |
   |--------------------------------+-------+-------------------|
   | i DCD forced high on modem 1   |  JP1  | Pins 2 & 3 closed |
   |--------------------------------+-------+-------------------|
   | DCD follows DTR on modem 1     |  JP1  | Pins 1 & 2 closed |
   |--------------------------------+-------+-------------------|
   | i DCD forced high on modem 2   |  JP2  | Pins 2 & 3 closed |
   |--------------------------------+-------+-------------------|
   | DCD follows DTR on modem 2     |  JP2  | Pins 1 & 2 closed |
   |--------------------------------+-------+-------------------|
   | i CN2 is DCE                   |  SW1  |        Off        |
   |--------------------------------+-------+-------------------|
   | CN2 is DTE                     |  SW1  |        On         |
   |--------------------------------+-------+-------------------|
   | i CN4 is DCE                   |  SW2  |        Off        |
   |--------------------------------+-------+-------------------|
   | CN4 is DTE                     |  SW2  |        On         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED  | Color  | Status |             Condition             |
   |------+--------+--------+-----------------------------------|
   | PWR  | Green  |   On   |            Power is on            |
   |------+--------+--------+-----------------------------------|
   | PWR  | Green  |  Off   |           Power is off            |
   |------+--------+--------+-----------------------------------|
   | XMT1 | Yellow |   On   |   Modem 1 is transmitting data    |
   |------+--------+--------+-----------------------------------|
   | XMT1 | Yellow |  Off   | Modem is 1 not transmitting data  |
   |------+--------+--------+-----------------------------------|
   | RCV1 | Yellow |   On   |     Modem 1 is receiving data     |
   |------+--------+--------+-----------------------------------|
   | RCV1 | Yellow |  Off   |   Modem 1 is not receiving data   |
   |------+--------+--------+-----------------------------------|
   | DCD1 | Yellow |   On   | Carrier signal detected on line 1 |
   |------+--------+--------+-----------------------------------|
   | DCD1 | Yellow |  Off   |  Carrier signal not detected on   |
   |      |        |        |              line 1               |
   |------+--------+--------+-----------------------------------|
   | XMT2 | Yellow |   On   |   Modem 2 is transmitting data    |
   |------+--------+--------+-----------------------------------|
   | XMT2 | Yellow |  Off   | Modem is 2 not transmitting data  |
   |------+--------+--------+-----------------------------------|
   | RCV2 | Yellow |   On   |     Modem 2 is receiving data     |
   |------+--------+--------+-----------------------------------|
   | RCV2 | Yellow |  Off   |   Modem 2 is not receiving data   |
   |------+--------+--------+-----------------------------------|
   | DCD1 | Yellow |   On   | Carrier signal detected on line 1 |
   |------+--------+--------+-----------------------------------|
   | DCD1 | Yellow |  Off   |  Carrier signal not detected on   |
   |      |        |        |              line 1               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                MISCELLANEOUS TECHNICAL NOTE                |
   |------------------------------------------------------------|
   | This card is intended for use in the CMN-16 rack-mount     |
   | system. The bus is used only for supplying power for the   |
   | card. All other card functions are accessed through the    |
   | serial ports.                                              |
   +------------------------------------------------------------+