TIARA COMPUTER SYSTEMS, INC.

LanCard/E * MC 10BT

NIC Type      Ethernet
Transfer Rate 10Mbps
Data Bus      MCA
Topology      Linear Bus

              Star
Wiring Type   Shielded twisted pair

              Unshielded twisted pair

              AUI transceiver via DB-15 port
Boot ROM      Not Available

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                               CABLE TYPE

           Connector type                        JP1 - JP4

  Shielded/Unshielded twisted pair           Pins 1 & 2 closed

   AUI transceiver via DB-15 port            Pins 2 & 3 closed

                          10BASE-T CONFIGURATION

                 Setting                              JP5 & JP6

  »   10BASE-T receive level select               Pins 2 & 3 closed
      standard

      10BASE-T receive sensitivity                Pins 1 & 2 closed
      reduced by 4.5db

                            LINK INTEGRITY TEST

                Setting                                 JP7

  »                Enabled                       Pins 1 & 2 closed

                  Disabled                       Pins 2 & 3 closed

  Note:Link Integrity is only used with 10Base-T wiring. When using an
  AUI transciever, the test should be disabled.

                     ETHERNET GROUNDING CONFIGURATION

                     Setting                                 JP8

  »   DB-15 port pin #1 select logic ground           Pins 2 & 3 closed
      (Ethernet standard)

      DB-15 port pin #1 select chassis ground         Pins 1 & 2 closed
      (Older DIX standard)

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                             DIAGNOSTIC LED(S)

         LED                 Status                    Condition

          1                    On               Data is being received

          1                    Off            Data is not being received

          2                    On              Data is being transmitted

          2                    Off                 Data is not being
                                                      transmitted

          3                    On               Collision is detected on
                                                        network

          3                    Off             No collisions detected on
                                                        network

          4                    On             Network connection is good

          4                    Off               Network connection is
                                                        broken

         L5                    On                      Power on

         L5                    Off                     Power off