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  | 
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| 
 Setting  | 
 Jumper  | 
 Setting  | 
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| 
 »  | 
 DC signal disabled 2  | 
 J1  | 
 Pins 2 & 3 closed  | 
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| 
 
  | 
 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  | 
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| 
 
  | 
 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.  | 
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| 
 DIAGNOSTIC LED(S)  | 
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| 
 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.  | 
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