Extron-electronics ISM 482 User Manual download pdf (Page 34)

ISM 482 Integrated Scaling Matrix Switcher • Operation 28

Optimizing the Video

Perform the following steps, in sequence, after you have installed the ISM. This procedure

will help you to configure the switcher for the best settings for your display environment. In

a multi-screen environment, perform this procedure for each display.

See Advanced Configuration menu on page 20, to select and output a test pattern and

to select and output blue-only video.

See Picture Adjustments on page 25, to make adjustments to the picture quality.

See User Presets menu on page 23, to save presets.

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 3.

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.

NOTE: 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.

NOTES:

• If the input source is a DVD, set the DVD player to output a 16:9 aspect ratio

(see “Setting up a DVD source” on the next page) 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 on

page 25.

8. Save this setting into one of the user memories using the User Presets menu (see User

Presets menu on page 23).

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Extron-electronics ISM 482 User Manual Page 34