WESTERMO TELEINDUSTRI AB

TD-23 AC

Card Type                Modem
Chip Set                 Unidentified
I/O Options              9-pin serial port (RS-232), terminal blocks (3)
Data Modulation Protocol ITU-T V.11, V.23, V.24/V.28
Wiring Type              Unshielded twisted pair
Maximum Transfer Rate    1200bps
Data Bus                 External

[Image]

                                            CONNECTIONS

            Function                     Label                       Function                Label

  Relay connector (screws 1 &     CN1     AC power connector (3 pole               CN4
  2)                                      terminal block)

  RS-232-C/V.24 interface         CN2     Line connector (4 pole                   CN5
  (screws 3 - 5)                          terminal block)

  RS-422/485 interface (screws    CN3     9-pin serial port                        CN6
  6 - 9)

  Note: CN1, CN2, & CN3 are separate interfaces on a 9 pole terminal block

                        USER CONFIGURABLE SETTINGS

                     Setting                         Label      Position

  2-wire mode enabled (line side)                     S2/6         On

  4-wire mode enabled enabled (line side)             S2/6         Off

  23ms RTS/CTS delay enabled                          S2/9         Off

  60ms RTS/CTS delay enabled                          S2/9         On

  Activity timer disabled                             S3/7         Off

  1min activity timer enabled                         S3/7         On

  Filter enabled; receive data is buffered for        S3/8         On
  6ms

  Filter disabled                                     S3/8         Off

                 LINE TERMINATION

             Setting                S1/1     S1/2

    Line termination disabled        Off     Off

     Line termination enabled        On       On

                TRANSMISSION LEVEL

          Setting           S2/1     S2/2    S2/3

           3dBm              Off     Off     Off

           -3dBm             On      Off     Off

           -6dBm             Off      On     Off

           -9dBm             On       On     Off

          -10dBm             Off     Off      On

          -12dBm             On      Off      On

          -13dBm             Off      On      On

          -15dBm             On       On      On

                DCD DETECTION LEVEL

             Setting                S2/4     S2/5

               3dBm                  Off      On

              10dBm                  On       On

              -3dBm                  On      Off

              -15dBm                 Off     Off

                              CARRIER CONTROL

                   Setting                         S2/7          S2/8

          Carrier controlled by RTS                 On            On

    Transmitter activated by incoming data;        Off            On
       data is buffered while carrier is
                 established

        Permanent carrier established               On            Off

  2-WIRE/4-WIRE MODE SELECTION (RS-422/485 SIDE)

             Setting                 S3/1    S3/2

       2-wire mode enabled            On     Off

   4-wire mode enabled enabled       Off      On

                          RS-422/485 TERMINATION

              Setting                 S3/3      S3/4      S3/5      S3/6

  RS-422/485 termination disabled      Off       Off       Off      Off

     2-wire termination enabled        On        On        Off      Off
             (RS-485)

     4-wire termination enabled        Off       Off       On        On
             (RS-422)

                             DIAGNOSTIC LED(S)

   LED        Color         Status                  Condition

   PWR     Unidentified       On                   Power is on

   PWR     Unidentified       Off                 Power is off

   RD      Unidentified       On             Modem is receiving data

   RD      Unidentified       Off          Modem is not receiving data

   TD      Unidentified       On           Modem is transmitting data

   TD      Unidentified       Off        Modem is not transmitting data

   RTS     Unidentified       On               RTS signal is high

   RTS     Unidentified       Off               RTS signal is low

   CTS     Unidentified       On         CTS signal is high. Device ready
                                                  to send data

   CTS     Unidentified       Off               CTS signal is low

   DCD     Unidentified       On              Data carrier present

   DCD     Unidentified       Off           Data carrier not present.
                                           Connection not established