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# 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
IMG IMG 1
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+