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

  CMN-C6SC

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

<gopher://bitreich.org/I/th99/t/P-R/53564-1.png>


  +------------------------------------------------------------+
  |                        CONNECTIONS                         |
  |------------------------------------------------------------|
  |      Function       | Label |       Function       | Label |
  |---------------------+-------+----------------------+-------|
  | Serial data port    |  CN1  | Telephone line out   |  CN2  |
  +------------------------------------------------------------+

  +------------------------------------------------------------+
  |                 USER CONFIGURABLE SETTINGS                 |
  |------------------------------------------------------------|
  |            Setting             | Label |     Position      |
  |--------------------------------+-------+-------------------|
  | i DCD forced high              |  JP1  | Pins 1 & 2 closed |
  |--------------------------------+-------+-------------------|
  | DCD follows RTS                |  JP1  | Pins 2 & 3 closed |
  |--------------------------------+-------+-------------------|
  | i RTS to CTS delay set to 8mS  |  JP2  | Pins 1 & 2 closed |
  |--------------------------------+-------+-------------------|
  | RTS to CTS delay set to 50mS   |  JP2  | Pins 2 & 3 closed |
  |--------------------------------+-------+-------------------|
  | i CN1 is DCE                   |  SW2  |        On         |
  |--------------------------------+-------+-------------------|
  | CN1 is DTE                     |  SW2  |        Off        |
  +------------------------------------------------------------+

  +------------------------------------------------------------+
  |              TRANSMIT CLOCK SOURCE SELECTION               |
  |------------------------------------------------------------|
  |    Setting    |    JP3/A     |    JP3/B     |    JP3/C     |
  |---------------+--------------+--------------+--------------|
  |  i Internal   |    Closed    |     Open     |     Open     |
  |---------------+--------------+--------------+--------------|
  |   External    |     Open     |    Closed    |     Open     |
  |---------------+--------------+--------------+--------------|
  |   Received    |     Open     |     Open     |    Closed    |
  +------------------------------------------------------------+

  +------------------------------------------------------------+
  |                    LINE SPEED SELECTION                    |
  |------------------------------------------------------------|
  |           Setting           |             SW2              |
  |-----------------------------+------------------------------|
  |           900bps            |          Position 9          |
  |-----------------------------+------------------------------|
  |           1200bps           |          Position 8          |
  |-----------------------------+------------------------------|
  |           1800bps           |          Position 7          |
  |-----------------------------+------------------------------|
  |           2400bps           |          Position 6          |
  |-----------------------------+------------------------------|
  |           3600bps           |          Position 5          |
  |-----------------------------+------------------------------|
  |           4800bps           |          Position 4          |
  |-----------------------------+------------------------------|
  |           7200bps           |          Position 3          |
  |-----------------------------+------------------------------|
  |          i 9600bps          |          Position 2          |
  |-----------------------------+------------------------------|
  |          14.4Kbps           |          Position 1          |
  |-----------------------------+------------------------------|
  |          19.2Kbps           |          Position 0          |
  +------------------------------------------------------------+

  +------------------------------------------------------------+
  |                     DIAGNOSTIC LED(S)                      |
  |------------------------------------------------------------|
  |  LED  |  Color  | Status  |           Condition            |
  |-------+---------+---------+--------------------------------|
  |  PWR  |  Green  |   On    |          Power is on           |
  |-------+---------+---------+--------------------------------|
  |  PWR  |  Green  |   Off   |          Power is off          |
  |-------+---------+---------+--------------------------------|
  |  XMT  | Yellow  |   On    |   Modem is transmitting data   |
  |-------+---------+---------+--------------------------------|
  |  XMT  | Yellow  |   Off   | Modem is not transmitting data |
  |-------+---------+---------+--------------------------------|
  |  RCV  | Yellow  |   On    |    Modem is receiving data     |
  |-------+---------+---------+--------------------------------|
  |  RCV  | Yellow  |   Off   |  Modem is not receiving data   |
  |-------+---------+---------+--------------------------------|
  |  DCD  | Yellow  |   On    |    Carrier signal detected     |
  |-------+---------+---------+--------------------------------|
  |  DCD  | Yellow  |   Off   |  Carrier signal not detected   |
  +------------------------------------------------------------+

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

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