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EtherLink II TP (3C503B-TP; Assy.#06-0098)

3COM CORPORATION

EtherLink II TP (3C503B-TP; Assy.#06-0098)

NIC Type

Ethernet

Transfer Rate

10Mbps

Data Bus

8-bit ISA

Topology

Linear bus

Star

Wiring Type

Unshielded twisted pair

AUI transceiver via DB-15 port

Boot ROM

Available

10BASE-T STANDARD COMPATIBILITY CONFIGURATION

Setting

Jumper

Setting

Link beat enabled

J1

Pins 1 & 2 closed

 

Link beat disabled

J1

Pins 2 & 3 closed

Receive threshold select normal

J2

Pins 1 & 2 closed

 

Receive threshold select low 1

J2

Pins 2 & 3 closed

Transmit level select normal (± 5V)

J3

Pins 1 & 2 closed

 

Transmit level select low (± 2V)

J3

Pins 2 & 3 closed

DC signal disabled 2

J4

Pins 1 & 2 closed

 

DC signal enabled (on receive wires) 3

J4

Pins 2 & 3 closed

Cable impedance select 100ohms

J6

Pins 2 & 3 closed

 

Cable impedance select 150ohms

J6

Pins 3 & 4 closed

 

Cable impedance select 75ohms

J6

Pins 1 & 2 closed

 

Note 1 : Use this setting with the 3Com MultiConnect TP Module. Do not use this setting with the 3Com

LinkBuilder, or the SynOptics LattisNet Model 3308.

Note 2 :This is the 10BASE-T standard and should be used with all 10BASE-T standard hubs.

Note 3 :This setting is required when using any Pre-10BASE-T SynOptics hub.

PRE-10BASE-T STANDARD COMPATIBILITY CONFIGURATION

Jumper

SynOptics LattisNet (see note)

HP StarLAN10, DAVID ExpressNet,

AT&T StarLan10 (Model 6601-01)

J1

Pins 2 & 3 closed

Pins 2 & 3 closed

J2

Pins 2 & 3 closed

Pins 1 & 2 closed

J3

Pins 2 & 3 closed

Pins 1 & 2 closed

J4

Pins 1 & 2 closed

Pins 2 & 3 closed

J6

Pins 2 & 3 closed

Pins 2 & 3 closed

Note:This table applies to SynOptic's System 3000 (module 3305), the 2500 family (models 2500,

BOOT ROM ADDRESS

Address

JP7A

JP7B

JP7C

JP7D

JP7E

Disabled

Closed

Open

Open

Open

Open

 

C8000h

Open

Closed

Open

Open

Open

 

CC000h

Open

Open

Closed

Open

Open

 

D8000h

Open

Open

Open

Closed

Open

 

DC000h

Open

Open

Open

Open

Closed

I/O BASE ADDRESS

Address

JP8A

JP8B

JP8C

JP8D

JP8E

JP8F

JP8G

JP8H

300h

Closed

Open

Open

Open

Open

Open

Open

Open

 

250h

Open

Open

Open

Open

Closed

Open

Open

Open

 

280h

Open

Open

Open

Open

Open

Closed

Open

Open

 

2A0h

Open

Open

Open

Open

Open

Open

Closed

Open

 

2E0h

Open

Open

Open

Open

Open

Open

Open

Closed

 

310h

Open

Closed

Open

Open

Open

Open

Open

Open

 

330h

Open

Open

Closed

Open

Open

Open

Open

Open

 

350h

Open

Open

Open

Closed

Open

Open

Open

Open

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

L1

Yellow

Blinking

Data is being transmitted/received

L1

Yellow

Off

Data is not being transmitted/received

L2

Green

On

Twisted pair network connection is good

L2

Green

Blinking

Twisted pair wire polarity reversed

L2

Green

Off

Twisted pair network connection is broken

Notes:L2 is functional only when the cable type is twisted pair.

Reversed polarity is automatically corrected for but this may impede performance. It is suggested that