User`s guide

Clarity Visual Systems
October 1998
20
3. Adjust Brightness
Set the Sample values for R, G and B as close to 001 as
possible while keeping the Brightness number as high as
possible.
If the initial Sample values are greater than 001 then
reduce the Brightness number until the first Sample value
reaches 001.
If the initial Sample values are showing 001 then increase
the Brightness number until all Sample values are 002 or
greater. Stop adjusting when the last Sample value that
goes above 001 reaches 002.
If Brightness is decreased while the Sample values are at
001, the color range for the displayed image will be
decreased.
4. Display an all-white
image from the
source
Frame 50823 on Reference Recordings, “A Video
Standard” test disk is an all-white image.
5. Adjust Contrast
Set the Sample values for R, G and B as close to 254 as
possible while keeping the Contrast number as low as
possible.
If the initial Sample values are less than 254 then
increase the Contrast number until the first Sample value
reaches 254.
If the initial Sample values are showing 254 then
decrease the Contrast number until all Sample values are
253 or less. Stop adjusting when the last Sample value
that goes below 254 reaches 253.
If Contrast is increased while the Sample values are at
254, the color range for the displayed image will be
decreased.
6. Display a standard
SMPTE Color Bar
pattern
A SMPTE Color Bar pattern is available at frame 17177
on Reference Recordings, “A Video Standard” test disk.
7. Enable the Blue
Only function
Select the Blue Only option and press the ENTER button
to enable it. At this point the screen will show only shades
of blue.