Quantum-data 881 Bedienungsanleitung PDF herunterladen (Seite 80)

62 Chapter 2 Testing Video Displays

2. Choose a standard component format (for example, 480i) by pressing the adjacent soft

key.

Alternatively, you can load the format with the following command:

FMTL 480i

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 geometry with the Hatch images (for example, TVHatch and

Hatch20), look for distortion with concave or convex lines near the periphery of the

display. Look for irregular spacing on the cross hatch patterns.

• When testing photometry such as chrominence, use the TVBar100 & TVBar_75

(TV formats only), 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.

• When testing 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.

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Quantum-data 881 Bedienungsanleitung Seite 80