RAD DATA COMMUNICATIONS

FOM-400

Card Type           T1/E1 signal converter
Chipset             Unidentified
Topology            Peer-Peer
Wire Type           Fiber optic cable
T1/E1 Transfer Rate 1.544Mbps/2.048Mbps
T1/E1 Protocol      AMI, HDB3
Frame Type          Unidentified
Data Bus            Proprietary

[Image]

                                CONNECTIONS

         Function           Label            Function             Label

  T1/E1 line in              CN1       Primary fiber optic         CN6
                                       transmit connector

  T1/E1 line out             CN2       Control port (see           CN7
                                       pinout below)

  Secondary fiber optic      CN3       DC power in                 CN8
  receive connector

  Secondary fiber optic      CN4       AC power in                 CN9
  transmit connector

  Primary fiber optic        CN5       Power switch                SW1
  receive connector

                                CN7 PINOUT

        Function            Pin              Function               Pin

  Chassis ground             1      Primary/secondary fiber          14
                                    optic channel indicator
                                    signal

  Not used                   2      Not used                         15

  Not used                   3      T1/E1 connection broken          16
                                    relay

  T1/E1 connection           4      Not used                         17
  broken signal

  Not used                   5      Not used                         18

  Not used                   6      T1/E1 connection broken          19
                                    relay

  Signal ground              7      Alarm condition signal           20

  Not used                   8      Not used                         21

  Not used                   9      Primary/secondary fiber          22
                                    optic channel selection

  Not used                  10      Secondary fiber optic            23
                                    connection broken signal

  Not used                  11      Not used                         24

  Not used                  12      Primary fiber optic              25
                                    connection broken signal

  Not used                  13      Not used

                        USER CONFIGURABLE SETTINGS

                  Setting                      Label         Position

  Signal ground connected to chassis ground     JP1         Pins 1 & 2
                                                              closed

  Signal ground not connected to chassis        JP1         Pins 2 & 3
  ground                                                      closed

  Primary fiber optic channel set for           SW2             On
  short-range operation

  Primary fiber optic channel set for           SW2            Off
  long-range operation

  Secondary fiber optic channel set for         SW3             On
  short-range operation

  Secondary fiber optic channel set for         SW3            Off
  long-range operation

  T1/E1 interface set for 100ohm or 120ohm      SW4             On
  balanced cable

  T1/E1 interface set for 75ohm unbalanced      SW4            Off
  cable

                       FIBER OPTIC CHANNEL SELECTION

                Setting                                 SW5

  »    Channel selected by control port             Position 2

           Primary channel active                   Position 1

          Secondary channel active                  Position 3

                             DIAGNOSTIC LED(S)

     LED         Color        Status                 Condition

    LED1         Green          On        AC power source is connected at
                                                        CN9

    LED1         Green          Off            AC power source is not
                                                 connected at CN9

    LED2         Green          On        Backup DC power is connected to
                                                        CN8

    LED2         Green          Off            Backup DC power is not
                                                 connected to CN8

    LED3          Red           On         Internal power supply failed

    LED3          Red           Off         Internal power supplies are
                                                       good

    LED4         Green          On             DSU is receiving data

    LED4         Green          Off          DSU is not receiving data

    LED5         Green          On           DSU is transmitting data

    LED5         Green          Off        DSU is not transmitting data

    LED6          Red           On          Fiber optic synchronization
                                                       lost

    LED6          Red           Off         Fiber optic synchronization
                                                       good

    LED7         Yellow         On         Primary fiber optic channel in
                                                        use

    LED7         Yellow         Off       Primary fiber optic channel not
                                                      in use

    LED8          Red           On          Primary fiber optic channel
                                          receive level less than -39dBm

    LED8          Red           Off         Primary fiber optic channel
                                          receive level more than -39dBm

    LED9         Yellow         On         Secondary fiber optic channel
                                                      in use

    LED9         Yellow         Off        Secondary fiber optic channel
                                                    not in use

    LED10         Red           On         Secondary fiber optic channel
                                          receive level less than -39dBm

    LED10         Red           Off        Secondary fiber optic channel
                                          receive level more than -39dBm