Ethernet network interface card – USRobotics NETServer/8 User Manual
Page 220
A-4 Technical Specifications
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.