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akidder

1519 Posts
Posted - 22 Apr 2002 :  18:30:06  Show Profile  Email Poster
Q: I've made a new cable for a display. How can I best test it?

It's usually best to display a known-good test pattern on your panel. The following zip file contains a number of images that are useful for checking out a display cable.

Display test patterns (zip 87kB)

  • color_bars.bmp (bmp 128 kB)
    Bars of red, gred, blue and gray, each transitioning smoothly from black to full color (or white). At 16bpp, you should see 32 for red and blue and 64 shades of green (see topic 600 for details). Useful for finding transposed wires in a display cable.


  • color_bar_test_pattern.bmp (bmp 528k)
    Includes vertical and horizontal color bars along with single-pixel lines. Esp. useful for finding errors in passive display cables (each wire is a different pixel).


  • color_bar_test_pattern_qvga.bmp
    Version of "color_bar_test_pattern.bmp" scaled to 320x240.


  • 16-color gray.bmp
    Bar with 16 shades of gray progressing from black to white.


  • 800x600x50pct_gray.bmp
    Alternating black and white dots. Causes maximimum power draw for most displays.

For further reading about displays on our products, see the display topic index.

-----------------------
Drew Kidder
ADS Technology Transfer

Edited by akidder 26-Jun-2003: Add link to topic 600.
Edited by akidder 22-Feb-2005: Add direct links to some of the patterns.
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