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Video Settings
This dialog provides access to all of the key video settings that determine image
quality and link performance.
Threshold
The threshold is effectively a
noise filter that differentiates
between valid video signals
and background noise or
interference. This has the
effect of reducing unnecessary
video signals between the
AdderView CATx and the
remote system, thus improving
performance.
Phase
The phase setting adjusts the
alignment of the host video
output and the remote system
video display to achieve the
sharpest image.
Horizontal Position
Determines the horizontal
position of the host screen
image within the viewer
window.
Vertical Position
Determines the vertical position
of the host screen image within
the viewer window.
Brightness & Contrast
The red, green and
blue constituents of the
brightness and contrast
can be set individually.
Alternatively, use
the Auto button
on the right side to
automatically optimise
these for the current
host and connection
speed.
Calibrate All
Click to
determine the
optimum settings
for all aspects of
video the video
connection from
the host system.
Display activity
Indicates the level
of video activity
currently in
progress.
Using automatic configurations
• Every setting can be individually subjected to an automatic configuration
(click the appropriate ‘Auto’ button) or can also be manually adjusted.
• Use the ‘Calibrate All’ button to automatically determine the optimum
settings for all items.
Note: Before using the ‘Calibrate All’ option, if possible, remove on-screen
display (OSD) elements generated by the AdderView CATx IP or any other
connected KVM switches (such as a host name label or menu). These OSD
elements use different video rates to those of the host system(s) and can
affect the setting of the automatic threshold value. AdderView CATx IP uses
an improved calculation procedure to filter out the effect of these elements.
However, best results are obtained when the screen contains only host
system information.
Note: To maximise performance, the threshold level is automatically
increased by 50% when a slow link is detected.
Note: When the AdderView CATx IP is used with one or more other
switches, the threshold needs to be higher than 32 due to the significant
amounts of ‘noise’ that these switches introduce. The AdderView CATx IP
configuration should detect such noise and adjust the threshold accordingly.
Setting the Threshold manually
Occasionally it can be useful to manually adjust the Threshold setting, in order to
achieve a setting that best suits your particular requirements.
1 Use the ‘Calibrate All’ function to ensure that all other settings are
optimised.
2 Click the Threshold left arrow button to decrement the setting by one and
observe the ‘Display Activity’ indicator.
3 Repeat step 2 until the Display Activity indicator suddenly rises to a much
higher level (i.e. 50%). This will mean that you have reached the noise
boundary. At this point, increment the Threshold value by 2 or 3 points to
achieve an optimum setting.