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 Protocol     CCITT V.24/V.28/V.10, V.11
Error Correction/Compression Unidentified
Data Bus                     External

[Image]

                                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 and      On      Off      Off       On       Off
      DCD - RTS

      Transmitter and CTS -     On      Off      Off       Off      On
      RTS, DCD - high

      Transmitter, CTS and     Off       On      Off       On       Off
      DCD - DTR

      Transmitter and CTS -    Off       On      Off       Off      On
      DTR, DCD - high

      Transmitter - active,    Off      Off       On       On       Off
      CTS - high, DCD - low

  »   Transmitter - active,    Off      Off       On       Off      On
      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