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4
Installation & Operation
Connections
Installation of the X200 modules is straightforward and minimal configuration
requirements in most cases. Each of the (up to) two moulded CAMs (
Computer
Access Modules
) connect directly to a computer system, while the remote X200
module is at the other end of the twisted pair cable runs and attaches to the
keyboard, mouse, etc.
X200 receiver units can also be used with AdderView CATx switches to allow one
or more user consoles to be placed remotely from the central unit.
•
Connections.at.each.CAM.(local).unit
•
Connections.at.the.X200.(remote).module
Cable length advice
The X200 modules support twisted-pair structured cabling within categories
5, 5e and 6. Of these three cable types, category 5 generally provides the best
transmission of video signals because its four pairs of conductors are the most
evenly twisted.
Category 5e and 6 cables use conductor pairs that are unevenly twisted in order
to combat interference effects encountered within higher frequency networks.
While these uneven twists work well for Ethernet signals, they can impose
problems for the video signals transceived by the X200 modules. The X200
modules send the red, green and blue video signals on separate twisted pairs
within the cable. If any of the colour signals are made to travel slightly further
or shorter distances than the others, the result is seen as misaligned colours on
screen. This is called
skew
and becomes more noticeable as cable runs become
longer and screen resolutions/refresh rates increase.
As an approximate guide, you should expect the following maximum cable
lengths:
Resolution
X00 without de-skew
X00 with de-skew
1920 x 1200
50m
50m
1600 x 1200
100m
200m
1280 x 1024
-
300m
When used with an AdderView CATx switch
It is possible to locate each CAM up to 50 metres from the AdderView CATx
switch. This distance must be taken into account when planning the cable run
from the X200 to the CATx switch. The total distance from any X200 to any
CAM must not exceed 300 metres (or less if an X200 without de-skew is used).
HT
REMOTE
USER
Overall maximum length between any remote user and
any host system must not exceed 300 metres (980 feet)
300 metres (980 feet)
maximum
50 metres
(160 feet)
maximum
X200
CAM COMPUTER
SYSTEM