Nominal direct current resistance:

Center conductor:

24 gage (7 strands 32 gage);

 

.61 millimeter diameter;

 

23.7 ohms/1000 feet;

 

77.8 ohms/kilometer

Shield:

15.5 ohms/1000 feet;

 

50.9 ohms/kilometer

Nominal outside diameter:

.265 inch; 6.73 millimeters

Nominal capacitance

30 picofarads/ft;

between conductors:

98 picofarads/meter

Ethernet Network Interface Card

10Base-T

 

Pin Number

IEEE Name

Function

 

 

 

 

 

 

 

1

TD+

Transmit Data +

 

 

2

TD-

Transmit Data -

 

 

3

RD+

Receive Data +

 

 

4

Not used

 

 

 

5

Not used

 

 

 

6

RD-

Receive Data -

 

 

7

Not used

 

 

 

8

Not used

 

 

 

 

 

 

 

Data Transfer Rate:

10 Mbps

 

 

Accessing Scheme:

CSMA/CD (Carrier Sense Multiple

 

 

Access with Collision Detection)

Topology:

Star Wired Hub (using multiport

 

 

repeater)

 

 

Maximum Nodes: Limited only by repeater used

Transmission Medium: Unshielded Twisted Pair

Network Lobe Distance: 100 meters (328 ft.) suggested max. Longer cabling can be used at the expense of reduced receiver squelch levels.

A-4 Technical Specifications

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USRobotics NETServer/8, NETServer/16 manual Ethernet Network Interface Card, 10Base-T