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       # RAD DATA COMMUNICATIONS
       
          CMN-C6TX
       
          Card Type         Modem (asynchronous)                         
          Chipset           Unidentified                                 
          Maximum Data Rate 19.2Kbps x 2                                 
          Data Modulation   Unidentified                                 
          Data Bus          Proprietary                                  
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function       | Label |      Function       | Label |
          |----------------------+-------+---------------------+-------|
          | Telephone line 1 out |  CN1  | Telephone line 2    |  CN3  |
          |                      |       | out                 |       |
          |----------------------+-------+---------------------+-------|
          | Serial data port 1   |  CN2  | Serial data port 2  |  CN4  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |            Setting             | Label |     Position      |
          |--------------------------------+-------+-------------------|
          | í DCD forced high on modem 1   |  JP1  | Pins 2 & 3 closed |
          |--------------------------------+-------+-------------------|
          | DCD follows DTR on modem 1     |  JP1  | Pins 1 & 2 closed |
          |--------------------------------+-------+-------------------|
          | í DCD forced high on modem 2   |  JP2  | Pins 2 & 3 closed |
          |--------------------------------+-------+-------------------|
          | DCD follows DTR on modem 2     |  JP2  | Pins 1 & 2 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     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   |
          |-------+--------+--------+----------------------------------|
          | 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   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                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.                                              |
          +------------------------------------------------------------+