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# CABLETRON SYSTEMS, INC.
E2020/-X (Coaxial)
NIC Type Ethernet
Transfer Rate 10Mbps
Data Bus 8-bit ISA
Topology Linear Bus
Wiring Type RG-58A/U 50ohm coaxial
AUI transceiver via DB-15 port
Boot ROM Not Available
(IMG) IMG 1
+------------------------------------------------------------+
| INTERRUPT REQUEST |
|------------------------------------------------------------|
| IRQ | JP1A | JP1B | JP1C | JP1D | JP1E | JP1F |
|-------+--------+--------+--------+--------+--------+-------|
| | 2/9 | Open | Open | Open | Open | Open |Closed |
|-+-----+--------+--------+--------+--------+--------+-------|
|»| 3 | Closed | Open | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 4 | Open | Closed | Open | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 5 | Open | Open | Closed | Open | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 6 | Open | Open | Open | Closed | Open | Open |
|-+-----+--------+--------+--------+--------+--------+-------|
| | 7 | Open | Open | Open | Open | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O BASE ADDRESS |
|------------------------------------------------------------|
| Address | JP2 | JP3 |
|---------------------+-------------------+------------------|
| » | 220h | Closed | Closed |
|---+-----------------+-------------------+------------------|
| | 280h | Closed | Open |
|---+-----------------+-------------------+------------------|
| | 300h | Open | Closed |
|---+-----------------+-------------------+------------------|
| | 380h | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CABLE TYPE |
|------------------------------------------------------------|
| Type | SW1 | JP7 |
|----------------------------+--------+----------------------|
| » | RG-58A/U 50ohm | On | Pins 1 & 2 Closed |
| | coaxial | | |
|------+---------------------+--------+----------------------|
| | AUI transceiver via | Off | Pins 2 & 3 Closed |
| | DB-15 port | | |
|------------------------------------------------------------|
| Note:JP7 is used to enabled the DC converter on the card |
| to supply power to coaxial networks. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIGNAL QUALITY ERROR (SQE) TEST |
|------------------------------------------------------------|
| Setting | SW2 |
|------------------------------------------+-----------------|
| » | Disabled | Off |
|-----------------+------------------------+-----------------|
| | Enabled | On |
|------------------------------------------------------------|
| Note:Signal Quality Error (SQE) is a test of the collision |
| circuitry and path. |
+------------------------------------------------------------+
(IMG) IMG 2
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+--------+-------------+-------------------------------|
| 1 | Green | On/Blinking | Data is being transmitted |
|-----+--------+-------------+-------------------------------|
| 1 | Green | Off | Data is not being transmitted |
|-----+--------+-------------+-------------------------------|
| 2 | Red | On/Blinking | Collision detected on network |
|-----+--------+-------------+-------------------------------|
| 2 | Red | Off | Normal operation |
|-----+--------+-------------+-------------------------------|
| 3 | Yellow | On/Blinking | Data is being received |
|-----+--------+-------------+-------------------------------|
| 3 | Yellow | Off | Data is not being received |
|-----+--------+-------------+-------------------------------|
| 4 | Green | On | Card is receiving power |
|-----+--------+-------------+-------------------------------|
| 4 | Green | Off | Card is not receiving power |
+------------------------------------------------------------+