
RAD DATA COMMUNICATIONS

FCD-2L (AC)

Card Type                  E1 CSU/DSU
Chip Set                   Unidentified
I/O Options                AC power connector, 25-pin connector (RS-530),

                           E1 network interface via RJ-48 connector, BNC
                           connectors (2)
Wiring Type                RJ-48 120ohm shielded twisted pair

                           BNC 75ohm coaxial
E1 Transfer Rate           2.048Mbps
E1 Protocol                HDB3
Frame type                 256N, 256S
Data Bus                   External

[Image]

                                CONNECTIONS

         Function            Label             Function             Label

  Analog loopback             ANA     ATE connector (maintenance     J1
  activation push-button              only)

  Alarm clear push-button     CLR     Test pattern activation       PATT
                                      push-button

  AC power connector          CN1     Remote digital loopback       REM
                                      activation push-button

  DTE/DCE serial port         CN2     BNC connector - receive        RX
  (25-pin connector)

  Network interface via       CN3     BNC connector - transmit       TX
  RJ-48 connector

  Digital loopback            DIG     Power switch                  SW2
  activation push-button

                        USER CONFIGURABLE SETTINGS

                 Setting                    Label           Position

     Front panel switches enabled           JP2       Pins 1 & 2 closed

      Front panel switches disabled          JP2       Pins 2 & 3 closed

     Watchdog enabled                       JP5       Pins 1 & 2 closed

      Watchdog disabled                      JP5       Pins 2 & 3 closed

     Debug self test mode disabled          JP7       Pins 2 & 3 closed

      Debug self test mode enabled           JP7       Pins 1 & 2 closed

     Phantom power feeding is disabled      JP19             Open

      Phantom power feeding is enabled       JP19            Closed

     Signal ground is connected to the      JP23      Pins 2 & 3 closed
      frame ground

      Signal ground is not connected to      JP23      Pins 1 & 2 closed
      the frame ground

     E1 interface not referenced to         JP26             Open
      frame ground

      E1 interface referenced to frame       JP26            Closed
      ground

     E1 interface receive signal not        JP27             Open
      referenced to frame ground

      E1 interface receive signal            JP27            Closed
      referenced to frame ground

     E1 interface transmit signal not       JP32             Open
      referenced to frame ground

      E1 interface transmit signal           JP32            Closed
      referenced to frame ground

     Unbalanced network interface not      JP204             Open
      grounded

      Unbalanced network interface          JP204            Closed
      grounded

     CTS forced high                        S7/3              On

      CTS follows remote RTS                 S7/3             Off

     Fast synchronization timing (1         S7/4             Off
      sec)

      AT&T TR-62411 synchronization          S7/4              On
      timing (10 sec)

     256S multiframe mode enabled           S7/5             Off

      256N multiframe mode enabled           S7/5              On

     TS16 is reserved                       S7/6             Off

      TS16 is enabled to carry user's        S7/6              On
      data

     CRC-4 enabled                          S7/7             Off

      CRC-4 disabled                         S7/7              On

     Factory configured - do not alter      S7/8         Unidentified

     Nx64 mode                             S11/1             Off

      Nx56 mode                             S11/1              On

     Internal clock mode enabled           S11/2             Off

      Loopback timing mode enabled          S11/2              On

     Time slot allocation is               S11/3              On
      sequential, starting from slot 1

      Data is inserted in alternate         S11/3             Off
      time slots, starting from slot 1

     Factory configured - do not alter     S11/4         Unidentified

                                 BAUD RATE

                  Setting                         S6              S9

                 Unframed                          0              0

     Operational baud rate set to 1x64                  0         1

     Operational baud rate set to 2x64                  0         2

     Operational baud rate set to 3x64                  0         3

     Operational baud rate set to 4x64                  0         4

    Operational baud rate set to 26x64                  2         6

    Operational baud rate set to 27x64                  2         7

    Operational baud rate set to 28x64                  2         8

    Operational baud rate set to 29x64                  2         9

    Operational baud rate set to 30x64                  3         0

  Note:

  Multiples of 56Kbps or 64Kbps, up to 30 may be selected, for a maximum
  of 1680Kbps for multiples of 56Kbps or a maximum of 1920Kbps for
  multiples of 64Kbps. 31-99 are not used.

                               DTE INTERFACE

   Function          J2             J3             J4             J5

    V.35 DTE        Open           Open           Board          Board
   interface                                   connected      connected

     RS-422         Board          Board                Open     Open
   interface      connected      connected

                            MAIN LINK INTERFACE

      Function       JP12    JP13    JP20/A    JP20/B   JP20/C    JP20/D

       Balanced     1 & 2   1 & 2    Open      Open    Closed     Open
       interface

       Unbalanced    1 & 2   1 & 2   Closed     Open     Open      Open
       interface

  Note: Pins designated are in the closed position

                                 IDLE CODE

    Setting      S8/1   S8/2    S8/3   S8/4    S8/5   S8/6   S8/7   S8/8

     Default    Off    Off     Off    Off     Off    Off    Off     Off
        idle
       code

  Note: On=0, Off=1. Switch S8/1 is the most significant bit. Switch S8/2
  is the least significant bit. Values are currently unidentified.

                           SERIAL COMMUNICATION

                 Setting                       JP16             JP17

          Serial communication for                  Pins    Pins 1 & 2
         maintenance purposes enabled                1 &       closed
                                                      2
                                                     closed

                   Reserved                          Pins    Pins 2 & 3
                                                     2 &       closed
                                                      3
                                                     closed

                                PORT TIMING

                 Setting                       S7/1             S7/2

               DTE1 port timing                 On               On

              DCE port timing                       On          Off

               DTE2 port timing                      Off         On

                   Not used                          Off         Off

                        E1 TRANSMIT LEVEL SELECTION

               Net build                    Label            Position

                   0dBm                     S12                0

                  -7.5dBm                    S12                1

                   -15dBm                    S12                2

                  -22.5dBm                   S12                3

                             DIAGNOSTIC LED(S)

     LED           Color         Status              Condition

     PWR        Unidentified       On               Power is on

     PWR        Unidentified       Off              Power is off

     RTS        Unidentified       On           RTS input line is on

     RTS        Unidentified       Off         RTS input line is off

     TST        Unidentified       On       Device is conducting a test

     TST        Unidentified       Off       Device is not conducting a
                                                        test

     ERR        Unidentified       On        Error detected in the test
                                                      pattern

     ERR        Unidentified       Off        Error not detected in the
                                                    test pattern

     LOC        Unidentified       On       Synchronization lost on local
                                                       FCD-2L

     LOC        Unidentified       Off       Synchronization not lost on
                                                    local FCD-2L

     REM        Unidentified       On          Synchronization lost on
                                                   remote FCD-2L

     REM        Unidentified       Off       Synchronization not lost on
                                                   remote FCD-2L

  10 [Image]    Unidentified       On       BER on the network link
                                            exceeds 10 [Image]

  10 [Image]    Unidentified       Off      BER on the network link does
                                            not exceed 10 [Image]

     MIN        Unidentified       On           Minor alarm condition
                                             detected. Remains lit until
                                             fault condition disappears,
                                              or CLR button is pushed

     MIN        Unidentified       Off        Minor alarm condition not
                                                      detected

     MAJ        Unidentified       On           Major alarm condition
                                             detected. Remains lit until
                                             fault condition disappears,
                                              or CLR button is pushed

     MAJ        Unidentified       Off        Major alarm condition not
                                                      detected

