USRobotics NETServer/8 User Manual

Page 224

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A-8 Technical Specifications

Token Ring

UTP Connector

Data Transfer Rate:

4 or 16 Mbps (megabits per second)

Accessing Scheme:

Token Passing

Topology:

Star Wired Ring

Maximum Nodes

72

for Physical Network:

Transmission Medium:

Type 3

Unshielded Twisted Pair

Network Lobe Distance:

100 meters (328 ft.) suggested
maximum, Level 4

Connector:

8-position modular jack, Stewart 88-
360808 or equivalent

Cable Specifications

Wire type:

Belden 1154A or equivalent, 8
conductors in 4 twisted pairs

Maximum cable distance:

328 feet, 100 meters

Nominal direct

24 gage solid copper;

current resistance:

.020 inches diameter;
25.7 ohms/1000 feet;
84.3 ohms/kilometer

Nominal outside diameter:

.185 inches

Nominal impedance:

105 ohms

Nominal velocity

60%

of propagation:

Nominal capacitance

15.0 picofarads/

between conductors:

foot; 49.2 picofarads/meter

Cabling:

8-position modular plug to 8-position
modular plug

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