Token ring network interface card – USRobotics NETServer/8 User Manual
Page 223
Technical Specifications A-7
Token Ring Network Interface Card
Token Ring
STP Connector
Data Transfer Rate:
4 or 16 Mbps
Accessing Scheme:
Token Passing
Topology:
Star Wired Ring
Maximum Nodes
250
for Physical Network:
Transmission Medium:
Type 1
Individual Shielded Pair
Network Lobe Distance:
100 meters (328 ft.) suggested
maximum
Connector:
DB9, AMP 747844-3 or equivalent
Cable Specifications
Wire type:
Belden 96888 or equivalent, 4 con-
ductors in 2 individually shielded
pairs, copper braid shield overall
Maximum cable distance:
328 feet, 100 meters
Nominal direct
22 gage solid copper;
current resistance:
.0255 inches diameter;
16 ohms/1000 feet;
52.5 ohms/kilometer
Nominal outside
.310 inch x .455 inch
diameter:
Nominal impedance:
150 ohms
Nominal velocity
78%
of propagation:
Nominal capacitance
8.5 picofarads/ foot;
between conductors:
27.9 picofarads / meter
Cabling:
DB9M to DB9M