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# ALLIED TELESYN, INC.
AT-270
Card Type Single Port Transceiver
NIC Type Ethernet
Network Transfer Rate 10Mbps/CSMA/CD
Topology Linear Bus
Wiring Type AUI transceiver via DB-15 port
Data Bus None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|---------------------------+-------+----------------+-------|
| AUI transceiver via DB-15 | CN1 | BNC connector | CN3 |
|---------------------------+-------+----------------+-------|
| AUI transceiver via DB-15 | CN2 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------------+-------+-----------|
| ยป | SQE/Heartbeat switch disabled | SW1 | 0 |
|---+------------------------------------+-------+-----------|
| | SQE/Heartbeat switch enabled | SW1 | 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----------+--------------+--------+------------------------|
| Power 1 | Unidentified | On | Power for port 1 is |
| | | | present |
|-----------+--------------+--------+------------------------|
| Power 1 | Unidentified | Off | Power for port 1 is |
| | | | absent |
|-----------+--------------+--------+------------------------|
| Power 2 | Unidentified | On | Power for port 2 is |
| | | | present |
|-----------+--------------+--------+------------------------|
| Power 2 | Unidentified | Off | Power for port 2 is |
| | | | absent |
|-----------+--------------+--------+------------------------|
| TRANSMIT | Unidentified | On | Data is being |
| | | | transmitted |
|-----------+--------------+--------+------------------------|
| TRAMSMIT | 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 |
|-----------+--------------+--------+------------------------|
| COLLSION | Unidentified | Off | No collision detected |
| | | | on network |
|-----------+--------------+--------+------------------------|
| SQE TEST | Unidentified | On | SQE is enabled |
|-----------+--------------+--------+------------------------|
| SQE TEST | Unidentified | Off | SQE is disabled |
+------------------------------------------------------------+