WESTERMO TELEINDUSTRI AB
========================

   MA-42DC

   Card Type              Modem (asynchronous)                    
   Chip Set               Unidentified                            
   I/O Options            DC power, RS-232 serial port,           
                          RS-422/485                              
   Maximum Modem Rate     100Kbps                                 
   Data Modulation        CCITT V.24/V.28/V.10, V.11              
   Protocol               
   Error                  Unidentified                            
   Correction/Compression 
   Data Bus               External                                

<gopher://bitreich.org/I/th99/t/U-Z/55417-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |          Function          | Label |   Function    | Label |
   |----------------------------+-------+---------------+-------|
   | Power connector (terminal  |  CN1  | RS-232-C port |  CN3  |
   | block)                     |       |               |       |
   |----------------------------+-------+---------------+-------|
   | Terminal block             |  CN2  |               |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | 115V AC enabled                    |  S1   |    On     |
   |---+------------------------------------+-------+-----------|
   |   | 230V AC enabled                    |  S1   |    Off    |
   |---+------------------------------------+-------+-----------|
   |>> | 20ms CTS delay                     | S2/6  |    On     |
   |---+------------------------------------+-------+-----------|
   |   | 0ms CTS delay                      | S2/6  |    Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            2 OR 4 WIRE COMMUNICATION SELECTION             |
   |------------------------------------------------------------|
   |         Setting          |      S3/1       |     S3/2      |
   |--------------------------+-----------------+---------------|
   |>>    |      4-wire       |       On        |      Off      |
   |------+-------------------+-----------------+---------------|
   |      |      2-wire       |       Off       |      On       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            TERMINATION WITH FAIL-SAFE SELECTION            |
   |------------------------------------------------------------|
   |         Setting          |  S3/3  |  S3/4  | S3/5  | S3/6  |
   |--------------------------+--------+--------+-------+-------|
   |   | Termination (4-wire) |   On   |   On   |  Off  |  Off  |
   |---+----------------------+--------+--------+-------+-------|
   |   | Termination (2-wire) |  Off   |  Off   |  On   |  On   |
   |---+----------------------+--------+--------+-------+-------|
   |>> |    No termination    |  Off   |  Off   |  Off  |  Off  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           TRANSMITTER/CTS/DCD CONTROL SELECTION            |
   |------------------------------------------------------------|
   |         Setting         | S2/1 | S2/2 | S2/3 | S2/4 | S2/5 |
   |-------------------------+------+------+------+------+------|
   |   | Transmitter, CTS    |  On  | Off  | Off  |  On  | Off  |
   |   | and DCD - RTS       |      |      |      |      |      |
   |---+---------------------+------+------+------+------+------|
   |   | Transmitter and CTS |  On  | Off  | Off  | Off  |  On  |
   |   | - RTS, DCD - high   |      |      |      |      |      |
   |---+---------------------+------+------+------+------+------|
   |   | Transmitter, CTS    | Off  |  On  | Off  |  On  | Off  |
   |   | and DCD - DTR       |      |      |      |      |      |
   |---+---------------------+------+------+------+------+------|
   |   | Transmitter and CTS | Off  |  On  | Off  | Off  |  On  |
   |   | - DTR, DCD - high   |      |      |      |      |      |
   |---+---------------------+------+------+------+------+------|
   |   | Transmitter -       | Off  | Off  |  On  |  On  | Off  |
   |   | active, CTS - high, |      |      |      |      |      |
   |   | DCD - low           |      |      |      |      |      |
   |---+---------------------+------+------+------+------+------|
   |>> | Transmitter -       | Off  | Off  |  On  | Off  |  On  |
   |   | active, CTS and DCD |      |      |      |      |      |
   |   | - high              |      |      |      |      |      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED  |    Color     | Status |          Condition          |
   |------+--------------+--------+-----------------------------|
   | LED1 | Unidentified |   On   |         Power is on         |
   |------+--------------+--------+-----------------------------|
   | LED1 | Unidentified |  Off   |        Power is off         |
   |------+--------------+--------+-----------------------------|
   | LED2 | Unidentified |   On   |  Data is being transmitted  |
   |------+--------------+--------+-----------------------------|
   | LED2 | Unidentified |  Off   |      Data is not being      |
   |      |              |        |         transmitted         |
   |------+--------------+--------+-----------------------------|
   | LED3 | Unidentified |   On   |   Data is being received    |
   |------+--------------+--------+-----------------------------|
   | LED3 | Unidentified |  Off   | Data is not being received  |
   |------+--------------+--------+-----------------------------|
   | LED4 | Unidentified |   On   |     RTS signal is high      |
   |------+--------------+--------+-----------------------------|
   | LED4 | Unidentified |  Off   |      RTS signal is low      |
   |------+--------------+--------+-----------------------------|
   | LED5 | Unidentified |   On   | CTS signal is high - device |
   |      |              |        |     ready to send data      |
   |------+--------------+--------+-----------------------------|
   | LED5 | Unidentified |  Off   |      CTS signal is low      |
   |------+--------------+--------+-----------------------------|
   | LED6 | Unidentified |   On   |    Data carrier present     |
   |------+--------------+--------+-----------------------------|
   | LED6 | Unidentified |  Off   | Data carrier not present -  |
   |      |              |        | connection not established  |
   +------------------------------------------------------------+