Fibre Network Connections; Network Cable Screen Continuity; How To Minimise Cross Talk - Honeywell Gent Vigilon Installation Instructions Manual

Fibre network connections

Tx
Rx
Links P2 and P3 are booster links.
Normally the links are not fitted, however for
distance exceeding 750m the links must be fitted.

Network cable screen continuity

Panel Earth
Panel 1
Ensure a good screen continuity joint exists where there is a split cable.
DO NOT mix cables of different types on the same leg of a network,
as this will create impedance imbalance and disruption to data
communication.

How to minimise cross talk

When using standard MICC cable in a network the different legs of
the cable must not be closely placed together, as this will cause
signal crosstalk which results in communication failure.
There are three practical ways of overcoming the crosstalk problem:
use a twisted-core MICC cable

put a ferrous screen between the cables (ie in the two runs of steel conduit)

maintain a distance between the network cables of at least 50mm

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Side 2
Side 1
(End 2)
(End 1)
P7 P4 P6 P5
Rx Tx Rx Tx
P2
P3
BACKPLANE
Control Panel
NOTE:
Screen continuity
connection at the joint
These split cables
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Side 2
Side 1
(End 2)
(End 1)
P7 P4 P6 P5
Rx Tx Rx Tx
P2
P3
BACKPLANE
Control Panel
The cable screens are not
connected to earth
at the joint or at Panel 2.
THE JOINT
Panel 2
Vigilon fire system
Tx
Rx
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