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3COM CORPORATION

ETHERLINK 16 TP (3C507-TP)

NIC Type

Ethernet

Transfer Rate

10Mbps

Data Bus

16-bit ISA

Topology

Star

Wiring Type

Unshielded twisted pair

Boot ROM

Available

10BASE-T STANDARD COMPATIBILITY CONFIGURATION

Setting

Jumper

Setting

»

DC signal disabled 2

J1

Pins 2 & 3 closed

 

DC signal enabled (On receive wires) 3

J1

Pins 1 & 2 closed

»

Link beat enabled

J2

Pins 1 & 2 closed

 

Link beat disabled

J2

Pins 2 & 3 closed

»

Receive threshold select normal

J3

Pins 1 & 2 closed

 

Receive threshold select low 1

J3

Pins 2 & 3 closed

»

Equalization disabled 2

J4

Pins 2 & 3 closed

 

Equalization enabled 3

J4

Pins 1 & 2 closed

»

Transmit level select normal (± 5V)

J6

Pins 1 & 2 closed

 

Transmit level select low (± 2V)

J6

Pins 2 & 3 closed

»

Cable Impedance select 100ohms

J7

Pins 2 & 3 closed

 

Cable Impedance select 150ohms

J7

Pins 3 & 4 closed

 

Cable Impedance select 75ohms

J7

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.

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

L1

Yellow

Blinking

Data is being transmitted or received

L1

Yellow

Off

Data is not being transmitted or 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

Note: Reversed polarity is automatically corrected for but this may impede performance. It is suggested that reversed polarity wires be corrected to attain maximum performance.