RAD DATA COMMUNICATIONS

ASM-40 V.35 AND X.21

Modem Type               Data (Synchronous)
Maximum Data Rate        2.048Mbps
Data Bus                 External
Data Modulation Protocol Proprietary

[Image]

                                CONNECTIONS

          Purpose            Location           Purpose         Location

  V.35/X.21/G.703               CN1       Digital loopback         DIG
                                          switch

  AC power                      CN2       Analog loopback          ANA
                                          switch

  Ground                        GND       Remote loopback          REM
                                          switch

  Receive                       RCV       Test pattern            PATT

  Transmit                      XMT

             ANALOG LOOPBACK

  Setting                    JP4

  Enabled             Pins 1 & 2 closed

  » Disabled          Pins 2 & 3 closed

        BAUD RATE

  Setting        SW1

  2.048Mbps       0

  1.544Mbps       1

  1.535Mbps       2

  1.024Mbps       3

  756Kbps         4

  512Kbps         5

  384Kbps         6

  » 256Kbps       7

  128Kbps         8

  64Kbps          9

         CHASSIS TO SIGNAL GROUND

  Setting                    JP12

  » Connected         Pins 2 & 3 closed

  Disconnected        Pins 1 & 2 closed

                     CLOCK SOURCE

  Setting         JP2/A         JP2/B        JP2/C

  » Internal     Closed         Open          Open

  External        Open         Closed         Open

  Loopback        Open          Open         Closed

                        ENABLE PUSHBUTTONS

  Setting                                      JP8

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

  Disabled                              Pins 2 & 3 closed

               ERROR CORRECTION

  Setting      JP7/A       JP7/B      JP7/C

  » Bypass    Closed       Open        Open

  Random       Open       Closed       Open

  Burst        Open        Open       Closed

                 LINE CODE

  Setting    JP3/A      JP3/B      JP3/C

  AMI        Closed      Open      Open

  » HDB3      Open      Closed     Open

  B8ZS        Open       Open     Closed

                              LINE FREQUENCY

  Setting                                              SW9

  » 2048, 2024/1024, 512, 256, 128, 64                  1

  1544/1920                                             2

  1536, 768, 384                                        3

                          LINE SIDE (coax cable)

  Setting           JP11/A        JP11/B         JP11/C         JP11/D

  Balanced           Open         Closed         Closed          Open

  » Unbalanced      Closed         Open           Open          Closed

  Note: Non-coax cable, no jumper connections selected.

             REMOTE LOOPBACK

  Setting                    JP5

  Enabled             Pins 1 & 2 closed

  » Disabled          Pins 2 & 3 closed

       T1/E1 IMPEDANCE

  Setting           SW10

  » 2048/1920        1

  1544, 1536         2

                V.54 DELAY

  Setting                    JP6

  On                  Pins 2 & 3 closed

  » Off               Pins 1 & 2 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