Lindy CPU IP Access Switch Plus , Video settings, Setting the Threshold manually, display

Video settings

This dialog provides access to all of the key video settings that determine image quality and link performance.

Setting the Threshold manually

Occasionally it can be useful to manually adjust the Threshold setting, such as when there is a KVM switch OSD banner that cannot be easily removed from the

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.

Threshold

The threshold is effectively a noise filter that differentiates between valid video signals and background noise or inteference. This has the effect of reducing unnecessary video signals between the CPU IP and the remote system, thus improving performance.

display.

1Use the ‘Calibrate all’ function to ensure that all other settings are optimised.

2Click the Threshold left arrow button to decrement the setting by one and observe the Display activity indicator.

3Repeat 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.

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Vertical position	Colour, brightness &	Calibrate all	Display activity
Determines the	contrast	Click to	Indicates the level
vertical position	Provides an automatic	determine the	of video activity
of the host screen	setting button to	optimum settings	currently in
image within the	optimise these three	for all aspects of	progress.
viewer window.	important video	video the video
	constituents for the	connection from
	current host and	the host system.
	connection speed.

All settings can be individually subjected to an auto configuration (click the appropriate ‘Auto’ button) and most 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, ensure that there are no on-screen display elements generated by any connected KVM switch (such as a host name label or menu). Due to the differing video rates of these items compared to the video image from the host itself this can confuse the calibration process into giving a much higher Threshold rate than is necessary, thus worsening the screen artefacts.

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