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

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 coaxial

On

Pins 1 & 2 Closed

 

AUI transceiver via DB-15 port

Off

Pins 2 & 3 Closed

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.

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

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