Quantum Data 881 User Manual

Page 72

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54

Chapter 2 Testing Video Displays

unconnected channel. Also, look at the transitions between the bars; they should
be sharp and distinct. Each bar also should be uniform in color and intensity across
its entire width.

To test luminance, you can use the

SMPTE133

(grayscale portion) image. To test

gamma correction, you can use the

SMPTE133

(checkerbox portion) image. The

detailed methods for verifying these parameters on the

SMPTE133

image are

provided in Appendix B, “

Image Reference

.”

When testing focus with the Focus or Text images, the characters in all areas of the
display should be well-formed and in focus.

When testing resolution with the Grill images, you should be able to see individual
and distinct stripes in all areas of the display at all four resolutions.

When testing for centering use the Outline images. For detailed methods for
verifying centering with the Outline images, see Appendix B, “

Image Reference

.”

When testing for high voltage regulation with the

Regulate

image, observe the

outline at the edges of the image. It should stay in place and not pull away from the
area of the large white blinking patch (when it appears).

Note: You can customize your generator to run through a specified set of formats and
images automatically or manually by creating test sequences. See Chapter 8, “

Working

with Test Sequences

.” for details.

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