Quantum Data 881, Руководство пользователя

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52 Chapter 2 Testing Video Displays
FMTL DMT0660
FMTU
3. Press the Content key to access the list of images.
4. Choose a suitable image (for example, SMPTE133) by pressing the adjacent soft key.
Alternatively, you can load the image with the following command:
IMGL SMPTE133
IMGU
5. Verify that the image appears on the display under test.
To test the display:
1. Press the Source key and select the first test format.
Alternatively, you can load the format with the following command:
FMTL format_name
FMTU
2. Press the Content key and select the first test image.
Alternatively, you can load the image with the following command:
IMGL image_name
IMGU
3. Repeat steps 1 and 2 for all formats and test images. Use the following guidelines to
verify proper operation:
• When testing photometry such as chrominance, use the ColorBar , SMPTE133 , or
SMPTEbar images. Look for missing bars which may indicate a dead or
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 for centering use the Outline images. The detailed methods for
verifying centering with the Outline images ( Outline0, Outline1, Outline2, Outline3 )
are provided in Appendix B, “ Image Reference .”
• 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 pixel anomalies use the Flat, Raster, and Ramp images. Use the
Raster and Flat images to look for pixels that may be stuck on or off, respectively.
The luminance should increase uniformly for the Ramp image. Also, look for
sparkles indicating problems with sampling.