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4-30 Chapter 4: Built-In Images
Model 801GC, 801GF & 801GX¥Rev. X1
Grill_11, Grill_22, Grill_33, Grill_44
Description The entire active video area is filled with
alternating black and white stripes. The stripes
are drawn at different resolutions. Each of the
stripes is four (4) pixels wide in the Grill_44 image
and three (3) pixels wide in the Grill_33 image.
Each of the stripes is two (2) pixels wide in the
Grill_22 image and one (1) pixel wide in the Grill_11
image.
The primary versions draw vertical stripes while
the secondary versions draw horizontal stripes.
Test Verify monitor resolution
Purpose The resolution of your monitor should meet or
exceed the design specs.
Method First adjust the brightness, contrast, and focus to
their correct settings. You should be able to see
individual and distinct stripes in all areas of the
display at all four resolutions. Failure to see distinct
lines at the highest resolution (Grill_11) may
indicate you have a defective video amplifier or
picture tube.
Note – If multicolored lines appear on a mask-type color picture
tube, you may have a problem with convergence or you may
be exceeding the resolution of the picture tube.