Table of Contents
Advertisement
REQUIREMENTS/SPECIFICATIONS
Mixed Cable Types - If you mix cable types in your installation,
you must compensate for the different cable attenuations. Type 6
and Type 9 cables can be run for only 2/3 the distance of Type 1.
This means:
10 meters (Type 1)
Example: Maximum Length for Mixed Cabling Installation
--
16 Mbit/sec ring speed and 130 stations.
--
The building has 60 meters of Type 1 cable in the wall.
--
How much Type 6 cable is available to connect the repeater
TCU port to the patch panel and the station to the local wall
jack?
--
Type 6 can only go 2/3 the distance of Type 1.
Solution:
100 meters = maximum cable length if only Type 1 cable is used
[60 meters of Type 1] + [40 meters of Type 1] = max. length
[60 meters of Type 1] + [(0.66) x (40 meters) of Type 6 ] = max.
length
|
|
26.4 meters of Type 6
(for patch panel and wall jack connections)
2.1.3 Cabling Recommendations
Crosstalk, noise, and the number and quality of connections
determine reliable data propagation and your network's error rate.
Crosstalk is interference caused by signal coupling between the
different cable pairs contained within a multi-pair cable bundle.
Multi-pair cables should not be used for UTP lobe cabling. STP lobe
cabling should be dedicated to carrying token ring traffic. Avoid
mixing token ring signals with other applications (voice, etc.)
within the same cable.
Noise can be caused by either crosstalk or externally induced
impulses. If noise induced errors are suspected, it may be necessary
to re-route cabling away from potential noise sources (motors,
switching equipment, fluorescent lighting, high amperage
Page 2-10
6.6 meters (Types 6, 9)
Advertisement
Table of Contents
