Apple Final Cut Pro 6 - Manual (Page 1329)

544 Part III Color Correction and Video Quality Control
8 Press the “blue only” button on the front of your monitor.
Note: This button is usually available only on professional monitors.
Notice how all of the different-colored bars turn into alternating light and dark ones.
 If your monitor is correctly calibrated: All the gray bars will be evenly gray, and all the
black bars evenly black.
 If the two outer gray bars don’t match: Adjust the chroma control of the monitor until
they do. Then adjust the phase control to even out the inner bars.
Note: NTSC and PAL video have brightness and contrast levels that are very different
from those of RGB computer displays. Broadcast video viewed on a computer display
often looks dull and dark, whereas the same video viewed on a broadcast monitor will
be bright and clear. For this reason, the color bars above are shown for reference only
and not to reflect what you should be seeing.
When the phase (similar
to hue) of the monitor is
correctly adjusted, you
should see alternating
bars of gray and black,
as shown.