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

   CMN-CF6A (ST)

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

<gopher://bitreich.org/I/th99/t/P-R/53567-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function       | Label |      Function       | Label |
   |----------------------+-------+---------------------+-------|
   | Serial data port 1   |  CN1  | Serial data port 2  |  CN4  |
   |----------------------+-------+---------------------+-------|
   | Fiber optic ST       |  CN2  | Fiber optic ST      |  CN5  |
   | transmit cable 1     |       | transmit cable 2    |       |
   |----------------------+-------+---------------------+-------|
   | Fiber optic ST       |  CN3  | Fiber optic ST      |  CN6  |
   | receive cable 1      |       | receive cable 2     |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Setting               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   | i Factory configured - do not alter |  JP1  | Unidentified |
   |-------------------------------------+-------+--------------|
   | i Factory configured - do not alter |  JP2  | Unidentified |
   |-------------------------------------+-------+--------------|
   | i RTS to CTS delay set to 2mS on    | SW1/1 |     Off      |
   | modem 1                             |       |              |
   |-------------------------------------+-------+--------------|
   | RTS to CTS delay set to 15mS on     | SW1/1 |      On      |
   | modem 1                             |       |              |
   |-------------------------------------+-------+--------------|
   | i DCD forced high on modem 1        | SW1/2 |      On      |
   |-------------------------------------+-------+--------------|
   | DCD follows DTR on modem 1          | SW1/2 |     Off      |
   |-------------------------------------+-------+--------------|
   | i RTS to CTS delay set to 2mS on    | SW2/1 |     Off      |
   | modem 2                             |       |              |
   |-------------------------------------+-------+--------------|
   | RTS to CTS delay set to 15mS on     | SW2/1 |      On      |
   | modem 2                             |       |              |
   |-------------------------------------+-------+--------------|
   | i DCD forced high on modem 2        | SW2/2 |      On      |
   |-------------------------------------+-------+--------------|
   | DCD follows DTR on modem 2          | SW2/2 |     Off      |
   |-------------------------------------+-------+--------------|
   | i Cable shield 1 connected to       | SW3/1 |      On      |
   | signal ground                       |       |              |
   |-------------------------------------+-------+--------------|
   | Cable shield 1 not connected to     | SW3/1 |     Off      |
   | signal ground                       |       |              |
   |-------------------------------------+-------+--------------|
   | i Signal ground 1 not connected to  | SW3/2 |     Off      |
   | chassis ground                      |       |              |
   |-------------------------------------+-------+--------------|
   | Signal ground 1 connected to        | SW3/2 |      On      |
   | chassis ground                      |       |              |
   |-------------------------------------+-------+--------------|
   | i Cable shield 2 connected to       | SW4/1 |      On      |
   | signal ground                       |       |              |
   |-------------------------------------+-------+--------------|
   | Cable shield 2 not connected to     | SW4/1 |     Off      |
   | signal ground                       |       |              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             USER CONFIGURABLE SETTINGS (CON'T)             |
   |------------------------------------------------------------|
   |                 Setting                 | Label | Position |
   |-----------------------------------------+-------+----------|
   | i Signal ground 2 not connected to      | SW4/2 |   Off    |
   | chassis ground                          |       |          |
   |-----------------------------------------+-------+----------|
   | Signal ground 2 connected to chassis    | SW4/2 |    On    |
   | ground                                  |       |          |
   |-----------------------------------------+-------+----------|
   | i CN1 is DCE                            |  SW5  |    On    |
   |-----------------------------------------+-------+----------|
   | CN1 is DTE                              |  SW5  |   Off    |
   |-----------------------------------------+-------+----------|
   | i CN3 is DCE                            |  SW6  |    On    |
   |-----------------------------------------+-------+----------|
   | CN3 is DTE                              |  SW6  |   Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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.                                              |
   +------------------------------------------------------------+