RAD DATA COMMUNICATIONS

ASM-10/8

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

[Image]

                                CONNECTIONS

        Purpose           Location            Purpose           Location

  RS-232                     CN1       Transmit                    XMT

  AC power                   CN2       Digital loopback            DIG
                                       switch

  Ground                     GND       Analog loopback switch      ANA

  Receive                    RCV       Remote loopback swtich      REM

                   AGC

  Setting                    JP12

  » Forced high       Pins 2 & 3 closed

  Normal              Pins 1 & 2 closed

             ANALOG LOOPBACK

  Setting                    JP8

  » Enabled           Pins 1 & 2 closed

  Disabled            Pins 2 & 3 closed

    ASYNCHRONOUS LENGTH - bits

  Setting     SW2/S3      SW2/S4

  8bits         Off        Off

  9bits         Off         On

  » 10bits      On         Off

  11bits        On          On

  ASYNCHRONOUS LENGTH - Characters

  Setting               SW2/S2

  » 12.5%                 Off

  25%                     On

        BAUD RATE

  Setting        SW1

  19.2Kbps        0

  14.4Kbps        1

  » 9600bps       2

  7200bps         3

  4800bps         4

  3600bps         5

  2400bps         6

  1200bps         7

                CD SIGNAL

  Setting                    JP4

  CD normal           Pins 1 & 2 closed

  » CD forced high    Pins 2 & 3 closed

         CHASSIS TO SIGNAL GROUND

  Setting                    JP11

  » Connected         Pins 1 & 2 closed

  Disconnected        Pins 2 & 3 closed

                               CLOCK SOURCE

  Setting           JP1/A          JP1/B          JP1/C         JP1/D

  » Internal        Closed         Open           Open           Open

  External           Open         Closed          Open           Open

  Receive            Open          Open          Closed          Open

  Asynchronous       Open          Open           Open          Closed

                  ENABLE PUSHBUTTONS

  Setting                             JP10

  » DIG, ANA, REM enabled      Pins 1 & 2 closed

  Disabled                     Pins 2 & 3 closed

             LINE CONNECTION

  Setting                    JP2

  » 4-wire            Pins 2 & 3 closed

  2-wire              Pins 1 & 2 closed

                          RECEIVE IMPEDANCE

  Setting         JP7/A         JP7/B        JP7/C         JP7/D

  » 150 Omhs     Closed         Open          Open          Open

  300 Omhs        Open         Closed         Open          Open

  600 Omhs        Open          Open         Closed         Open

  High            Open          Open          Open         Closed

             REMOTE LOOPBACK

  Setting                    JP9

  » Enabled           Pins 1 & 2 closed

  Disabled            Pins 2 & 3 closed

                   REMOTE POWER FAILURE

  Setting                                JP14

  » Transmit RPF tone             Pins 1 & 2 closed

  Doesn’t transmit RPF tone       Pins 2 & 3 closed

               RTS/CTS DELAY

  Setting    JP3/A      JP3/B      JP3/C

  0 ms       Closed      Open      Open

  » 8 ms      Open      Closed     Open

  64 ms       Open       Open     Closed

                         TRANSMIT IMPEDANCE

  Setting         JP6/A         JP6/B        JP6/C         JP6/D

  » 150 Omhs      Open          Open         Closed         Open

  300 Omhs        Open         Closed         Open          Open

  600 Omhs       Closed         Open          Open          Open

  Low             Open          Open          Open         Closed

                    TRANSMIT LEVEL

  Setting    JP5/A      JP5/B      JP5/C      JP5/D

  » 0dBm     Closed      Open      Open       Open

  -3dBm       Open      Closed     Open       Open

  -6dBm       Open       Open     Closed      Open

  -9dBm       Open       Open      Open      Closed

                V.54 DELAY

  Setting                    JP13

  On                  Pins 1 & 2 closed

  » Off               Pins 2 & 3 closed

                     USER CONFIGURABLE SETTINGS

       Function            Jumper/Switch            Position

  Asynchronous legnth          SW2/S1                  Off

                             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