HEWLETT PACKARD COMPANY

HP 28683A

Card Type             Ethernet transceiver
Network Transfer Rate 10Mbps
Topology              Star
Wire Type             Fiber optic cable
Data Bus              AUI via DB-15 connector

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                                CONNECTIONS

         Function            Label            Function            Label

  AUI via DB-15 connector     CN1      Fiber optic cable           CN3
                                       transmit connector

  Fiber optic cable           CN2
  receive connector

                        USER CONFIGURABLE SETTINGS

                  Setting                      Label         Position

  »   SQE signal enabled                       SW1/1            Off

      SQE signal disabled                      SW1/1            On

  »   Loopback test mode disabled              SW1/2            Off

      Loopback test mode enabled               SW1/2            On

                             DIAGNOSTIC LED(S)

    LED            Color           Status              Condition

    PWR        Unidentified          On               Power is on

    PWR        Unidentified          Off              Power is off

   LIGHT       Unidentified          On           Network connection is
                                                          good

   LIGHT       Unidentified          Off          Network connection is
                                                         broken

    ACT        Unidentified          On              Transceiver is
                                                transmitting or receiving
                                                          data

    ACT        Unidentified          Off           Transceiver is not
                                                transmitting or receiving
                                                          data

    COL        Unidentified          On             Cable is faulty

    COL        Unidentified          Off          Network collision not
                                                        detected

    COL        Unidentified       Blinking          Network collision
                                                        detected