USRobotics NETServer/16 Switch User Manual


 
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.