Extron electronic ISM 482 manual Setting up a DVD source, Centering controls to position the image

1.	If you are using a digital display such as an LCD or DLP projector, use the
	alternating pixels test pattern as a reference to adjust the phase and dot clock
	on the display devices. Proceed to step 2.
	If you are using a CRT display, use the cross hatch test pattern as a reference
	to converge the display.
2.	Set the ISM to output either the crop test pattern for 4:3 video or the
	appropriate aspect ratio test pattern.
3.	Use the display’s positioning controls to position the image so that you can
	see all sides of the test pattern on the display.
		For the best results of this optimizing procedure, do not use the ISM’s
		centering controls to position the image.
4.	Select an input. Use the ISM’s size and center functions to fill the crop or
	aspect ratio test pattern.
		If the input source is a DVD, set the DVD player to output a 16:9 aspect ratio
		(see “Setting up a DVD source” below) before sizing the image using the
		ISM’s size function to correct the aspect ratio.
		When you are sizing and centering a letterbox movie video source, increasing
		the brightness on the ISM makes it easier to see the top and bottom of the
		active video.
5.	If the input source is RGB, use the horizontal and vertical detail adjustments
	to increase the sharpness.
6.	For S-video and composite video inputs, set the ISM to output blue-only
	video and to output the Color Bars test pattern. Using the blue Color Bars as
	a reference, use the ISM’s color and tint controls to adjust the video’s color
	and tint.
7.	For RGB video inputs, set brightness and contrast levels. See “Picture
	adjustments”, earlier in this chapter.
8.	Save this setting into one of the user memories using the User Presets menu.
	See “User Presets menu”, earlier in this chapter.

Setting up a DVD source

To get the best results when using a DVD as a video source, Extron recommends that the DVD player itself be set up to output an aspect ratio of 16:9 and not 4:3. Because all DVDs are mastered as 16:9, having them set up for anything else causes the player to internally scale and compress the signal. The DVD player’s scaling and compression defeats the advantage of having 3-2 pulldown detection in the ISM.

All sizing adjustments to correct the aspect ratio should be done using the ISM.

To change the output aspect ratio of most DVD players:

1.Enter the DVD player’s setup or action menu while the disc is stopped.

2.Select the 16:9 aspect ratio.

Integration Scaling Matrix Switcher • Operation 3-19