RAD DATA COMMUNICATIONS

FOM-E3, FOM-T3 (DC POWER, FC CONNECTORS)

Card Type         T3 or E3 CSU/DSU
Chipset           Unidentified
Wire Type         Fiber optic cable
Transfer Rate     34.368Mbps (FOM-E3) or 44.736Mbps (FOM-T3)
Protocol          B8ZS, HDB3
Frame Type        Unidentified
Data Bus          N/A

[Image]

                                CONNECTIONS

         Function           Label            Function             Label

  T1 signal in via 75ohm     CN1       T1 fiber optic              CN4
  coaxial cable                        transmit FC connector
  connector

  T1 signal out via          CN2       Alarm signal connector      CN5
  75ohm coaxial cable
  connector

  T1 fiber optic receive     CN3       DC power in                 CN6
  FC connector

                        USER CONFIGURABLE SETTINGS

                  Setting                       Label        Position

  »   Signal ground connected to chassis         JP3         Pins 1 & 2
      ground                                                  closed

      Signal ground not connected to             JP3         Pins 2 & 3
      chassis ground                                          closed

  »   Coaxial cable length may be up to          JP5         Pins 1 & 2
      225 feet                                                closed

      Coaxial cable length may be up to          JP5         Pins 2 & 3
      450 feet                                                closed

  »   Device will transmit All Ones Signal       JP8         Pins 1 & 2
      when major alarm is detected                            closed

      Device will transmit nothing when          JP8         Pins 2 & 3
      major alarm is detected                                 closed

                                 TEST MODE

                 Setting                                SW4

  »           Normal operation                      Position 2

             Local loopback test                    Position 1

            Remote loopback test                    Position 3

                             DIAGNOSTIC LED(S)

     LED          Color         Status                Condition

     PWR          Green           On                 Power is on

     PWR          Green          Off                Power is off

     LOC         Yellow           On         Device is in local loopback
                                                      test mode

     LOC         Yellow          Off            Device is not in local
                                                 loopback test mode

     REM         Yellow           On         Device is in remote loopback
                                                      test mode

     REM         Yellow          Off           Device is not in remote
                                                 loopback test mode

     LOW           Red            On          Electrical input signal is
                                              below valid signal level

     LOW           Red           Off          Electrical input signal is
                                             within valid signal levels

    AIS1         Yellow           On         All Ones Signal received on
                                                electrical interface

    AIS1         Yellow          Off         All Ones Signal not received
                                               on electrical interface

     ERR           Red            On          Bit Error Rate of optical
                                             interface is 10 -6 or worse

     ERR           Red           Off          Bit Error Rate of optical
                                             interface is better than 10
                                                         -6

    AIS2         Yellow           On         All Ones Signal received on
                                                fiber optic interface

    AIS2         Yellow          Off         All Ones Signal not received
                                              on fiber optic interface