RAD DATA COMMUNICATIONS

ASM-11

Modem Type             Data (synchronous/asynchronous)
Maximum Data Rate      19.2Kbps
Data Bus               External
Data Modulation        Proprietary
Protocol

[Image]

                                CONNECTIONS

         Purpose           Location            Purpose           Location

  Line in                    CN1       Fuse                       FUSE

  RS-232/422                 CN2       ANA/NOR/REM switch          SW1

  AC power                   CN3

                   AGC

  Setting                    JP10

  » Forced high       Pins 2 & 3 closed

  Normal              Pins 1 & 2 closed

             ANALOG LOOPBACK

  Setting                    JP6

  » Enabled           Pins 1 & 2 closed

  Disabled            Pins 2 & 3 closed

    ASYNCHRONOUS LENGTH - bits

  Setting     SW3/S3      SW3/S4

  8bits         Off        Off

  9bits         Off         On

  » 10bits      On         Off

  11bits        On          On

  ASYNCHRONOUS LENGTH - Characters

  Setting               SW3/S2

  » 12.5%                 Off

  25%                     On

        BAUD RATE

  Setting        SW2

  19.2Kbps        0

  14.4Kbps        1

  » 9600bps       2

  7200bps         3

  4800bps         4

  3600bps         5

  2400bps         6

  1200bps         7

                CD SIGNAL

  Setting                    JP2

  CD normal           Pins 1 & 2 closed

  » CD forced high    Pins 2 & 3 closed

         CHASSIS TO SIGNAL GROUND

  Setting                    JP9

  » Connected         Pins 1 & 2 closed

  Disconnected        Pins 2 & 3 closed

            ENABLE TOGGLE SWITCH

  Setting                      JP8

  » ANA, REM enabled    Pins 2 & 3 closed

  Disabled              Pins 1 & 2 closed

            RECEIVE IMPEDANCE

  Setting                    JP5

  » 150 Omhs          Pins 2 & 3 closed

  High                Pins 1 & 2 closed

             REMOTE LOOPBACK

  Setting                    JP7

  » Enabled           Pins 1 & 2 closed

  Disabled            Pins 2 & 3 closed

               RTS/CTS DELAY

  Setting    JP1/A      JP1/B      JP1/C

  0ms        Closed      Open      Open

  » 8ms       Open      Closed     Open

  64ms        Open       Open     Closed

            TRANSMIT IMPEDANCE

  Setting                    JP4

  » 150omhs           Pins 2 & 3 closed

  Low                 Pins 1 & 2 closed

              TRANSMIT LEVEL

       Setting               JP3

  » 0dBm              Pins 1 & 2 closed

  -6dBm               Pins 2 & 3 closed

                      USER CONFIGERABLE SETTINGS

               Function                 Jumper/Switch      Position

  Factory configured - Do not alter        SW3/S1          Not used

                             DIAGNOSTIC LED(S)

     LED         Color        Status                 Condition

     PWR         Green          On                  Power is on

     PWR         Green          Off                Power is off

     RTS         Yellow         On            Request to Send enabled

     RTS         Yellow         Off          Request to Send disabled

     TD          Yellow         On          Modem is transmitting steady
                                                       SPACE

     TD          Yellow         Off       Modem is not transmitting data

     TD          Yellow      Blinking       Modem is transmitting data

     RD          Yellow         On        Modem is receiving steady SPACE

     RD          Yellow         Off         Modem is not receiving data

     RD          Yellow      Blinking         Modem is receiving data

     DCD         Yellow         On            Carrier signal detected

     DCD         Yellow         Off         Carrier signal not detected

    TEST          Red           On              Modem in test mode

    TEST          Red           Off           Modem not in test mode