ALLIED TELESYN, INC.
====================

   AT-125, AT-126

   Card Type             Transceiver                              
   NIC Type              Ethernet                                 
   Network Transfer Rate 10Mbps                                   
   Topology              Linear Bus, Star                         
   Wiring Type           AUI transceiver via DB-15 port           
                                                                  
                         Fiber optic cable                        
   Data Bus              None                                     

<gopher://bitreich.org/I/th99/n/A-B/42050-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |          Function          | Label |   Function    | Label |
   |----------------------------+-------+---------------+-------|
   | Fiber optic connector -    |  CN1  | AUI connector |  CN3  |
   | receive                    |       |               |       |
   |----------------------------+-------+---------------+-------|
   | Fiber optic connector -    |  CN2  |               |       |
   | transmit                   |       |               |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                 | Label | Position |
   |-----------------------------------------+-------+----------|
   |>> | SQE/Heartbeat switch disabled       | SW1/1 |    On    |
   |---+-------------------------------------+-------+----------|
   |   | SQE/Heartbeat switch enabled        | SW1/1 |   Off    |
   |---+-------------------------------------+-------+----------|
   |>> | Continuous transmit function        | SW1/2 |    On    |
   |   | disabled                            |       |          |
   |---+-------------------------------------+-------+----------|
   |   | Continuous transmit function        | SW1/2 |   Off    |
   |   | enabled                             |       |          |
   |---+-------------------------------------+-------+----------|
   |>> | Link test function - always on      | SW1/3 |    On    |
   |---+-------------------------------------+-------+----------|
   |>> | Factory configured - do not alter   | SW1/4 |    On    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  TRANSMIT POWER SELECTION                  |
   |------------------------------------------------------------|
   |     Setting      |JP1/A |JP1/B |JP1/C |JP2/A |JP2/B |JP2/C |
   |------------------+------+------+------+------+------+------|
   |       Low        |Closed| Open | Open |Closed| Open | Open |
   |------------------+------+------+------+------+------+------|
   |      Medium      | Open |Closed| Open | Open |Closed| Open |
   |------------------+------+------+------+------+------+------|
   |       High       | Open | Open |Closed| Open | Open |Closed|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   |    LED    |    Color     | Status |       Condition        |
   |-----------+--------------+--------+------------------------|
   | Transmit  | Unidentified |   On   |     Data is being      |
   |           |              |        |      transmitted       |
   |-----------+--------------+--------+------------------------|
   | Transmit  | Unidentified |  Off   |   Data is not being    |
   |           |              |        |      transmitted       |
   |-----------+--------------+--------+------------------------|
   |  Receive  | Unidentified |   On   | Data is being received |
   |-----------+--------------+--------+------------------------|
   |  Receive  | Unidentified |  Off   |   Data is not being    |
   |           |              |        |        received        |
   |-----------+--------------+--------+------------------------|
   | Collision | Unidentified |   On   | Collision detected on  |
   |           |              |        |        network         |
   |-----------+--------------+--------+------------------------|
   | Collision | Unidentified |  Off   | No collision detected  |
   |           |              |        |       on network       |
   |-----------+--------------+--------+------------------------|
   |   Link    | Unidentified |   On   | Link test function is  |
   |  status   |              |        |        disabled        |
   |-----------+--------------+--------+------------------------|
   |   Link    | Unidentified |  Off   | Link test function is  |
   |  status   |              |        |        enabled         |
   |-----------+--------------+--------+------------------------|
   | Power/SQE |    Yellow    |   On   | SQE/Heartbeat test is  |
   |   test    |              |        |        enabled         |
   |-----------+--------------+--------+------------------------|
   | Power/SQE |    Green     |   On   | SQE/Heartbeat test is  |
   |   test    |              |        |        disabled        |
   +------------------------------------------------------------+