Video Compensation; Remote User Video Compensation - Lindy SC5 User Manual

Video compensation

The SC5 units allow a remote user to be extended by a maximum of 300m (980
feet). Such long cable lengths can affect video signals, especially when higher
screen resolutions are used. In order to eliminate any video signal degradation,
all User Station extenders provide effective software-based video compensation
features.

Remote user video compensation

Video compensation for each remote user is provided by their User Station
modules, not by the SC5 unit itself. Using the User Station controls you can
adjust the picture sharpness and brightness to improve the remote picture
quality.
Video compensation is best carried out when viewing high contrast images with
vertical edges, such as black lines on a white background. When doing so, if you
notice that the screen image is 'fuzzy' or 'dark' then the image controls may not
be able to solve this condition.
Note: If the high contrast images exhibit shadows with separate colours, then
there may be a skew problem which requires a different image adjustment
(provided only by User Station C5 Pro and C5 USB-300 modules) - see the
Remote user skew adjustment section for details.
To display a suitable high contrast image
The best way to clearly view the effect of sharpness and brightness adjustments
is to display a high contrast image, with vertical edges, on the screen.
• Open a word processor, type the capital letter
'H', or 'M' and increase the point size to 72
or higher. For best results, the background
should be white and the character should be
black.
• A BLACK shadow on the right of the
character indicates UNDER compensation.
• A WHITE shadow on the right of the
character indicates OVER compensation.
Note: The Word processor method is accurate
and quick. However, for the very finest video
compensation, use the latest "skew" test pattern
program which shows both the skew pattern and a section of mixed size Hs
(black on white and white on black).
If the image controls cannot provide a crisp image
If, after adjusting the image controls, one or more screen images remain fuzzy
or have coloured shadows you may need to use the Skew adjustment feature.
Remote user skew adjustment
Please see
C5 USB-300 modules only).
High contrast Black or bright
black character
white shadow
on white on the right
background
indicates
the need for
sharpness
adjustment
for details (User Station C5 Pro and
continued