RAD DATA COMMUNICATIONS

ASM-45

Modem Type               Data (Synchronous)
Maximum Data Rate        768Kbps
Data Bus                 External
Data Modulation Protocol Proprietary

[Image]

                                CONNECTIONS

          Purpose            Location           Purpose         Location

  V.35/X.21/RS-530              CN1       Fuse                    FUSE

  AC power                      CN2       Digital loopback         DIG
                                          switch

  Ground                        GND       Analog loopback          ANA
                                          switch

  Receive                       RCV       Remote loopback          REM
                                          switch

  Transmit                      XMT       Test pattern            PATT

             ANALOG LOOPBACK

  Setting                    JP5

  Enabled             Pins 2 & 3 closed

  » Disabled          Pins 1 & 2 closed

                                BAUD RATE

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

  768Kbps       Closed       Open         Open         Open        Open

  512Kbps        Open       Closed        Open         Open        Open

  384Kbps        Open        Open        Closed        Open        Open

  » 256Kbps      Open        Open         Open        Closed       Open

  128Kbps        Open        Open         Open         Open       Closed

                CD SIGNAL

  Setting                    JP3

  CD normal           Pins 2 & 3 closed

  » CD forced high    Pins 1 & 2 closed

         CHASSIS TO SIGNAL GROUND

  Setting                    JP9

  » Connected         Pins 1 & 2 closed

  Disconnected        Pins 2 & 3 closed

                     CLOCK SOURCE

  Setting         JP2/A         JP2/B        JP2/C

  External       Closed         Open          Open

  » Internal      Open         Closed         Open

  Receive         Open          Open         Closed

             REMOTE LOOPBACK

  Setting                    JP6

  Enabled             Pins 2 & 3 closed

  » Disabled          Pins 1 & 2 closed

              TRANSMIT LEVEL

  Setting                    JP4

  » 0dBm              Pins 2 & 3 closed

  -6dBm               Pins 1 & 2 closed

                V.54 DELAY

  Setting                    JP7

  » Off               Pins 1 & 2 closed

  On                  Pins 2 & 3 closed

            X.21 CLOCK SOURCE

  Setting                    JP8

  External            Pins 1 & 2 closed

  » Internal          Pins 2 & 3 closed

                             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

     ERR         Yellow         On            Errors in test pattern

     ERR         Yellow         Off              Good test pattern