
To Set up
a Video Monitor or TV for
NTSC
procedure courtesy Walter Graff Hellgate Pictures NYC
note: This is easier than you might think when looking ahead at all this text.
Allow the monitor to warm up for a few
minutes
> Block any reflections on the screen and make sure the
lighting in the location is not that bright around the monitor.
>Switch your camera into bars.
> Set the Contrast also called "picture" to
its midpoint.
> Turn the Chroma also called
"color" on some monitors all the way down until the
color bars are shades of black and white
> Notice the three Picture Lineup Generating Equipment bars on
the bottom right called PLuGE bars. The left one
is below what a black signal is on a monitor. The middle one is
set for 7.5 units or black. The 11.5 bar is slightly brighter
than what black represents on your monitor. Adjust the Brightness
control until the middle (7.5 units) PLuGE bar is not quite
visible. The lightest bar on the right (11.5 units) should be
barely visible. The left bar (3.5 units) disappears when you do
this.
>
> Since 7.5 units is as dark as video gets in the US (analog),
you should not see any difference between the left bar (3.5
units) and the middle bar (7.5 units). There should be no
dividing line between these two bars. In fact both should
disappear together based on the 7.5 bar which 'just' disappears.
The only division you should see is between 11.5 and 7.5
>
> Next we want to set the contrast control on the
monitor for a proper white level. To do so, turn the
contrast all the way up. The white (100 unit) bar which is the
fat brightest white bar in the lower left hand side of the screen
will get real bright. Prior to turning the contrast pot down, you
will notice that the 11.5 units bar is now brighter than it was
when we just set it and that you can see the space where the 3.5
and the 7.5 units were. Adjust the contrast down until the three
PLuGE bars go back to the point where the 7.5 is barely visible
and the 3.5 is not longer visible. The 11.5 is once again
slightly visible.
>
> Next we adjust the color portion of the
picture. All professional monitors have a blue-only
switch. Press it. When you do, you are using only the
blue gun in the tube to make an image. On some monitors the bars
will turn shades of black and white. On others the bars will turn
deep blue.
>
> Notice that the four bars visible are either a shade of
black and white or are shades of deep blue. Also notice that each
column is actually split toward the bottom of the bars making for
four tall bars with four little sub bars. If the tint and color
are correct, these two elements in each column should appear to
be the same color or contrast. Most likely, they may need
adjustment.
>
> We are now going to make sure all the bars are the same
color (as close as
> they can be).
>
> Now this next step is a 'two place viewing' procedure. With
the blue switch still depressed, turn the chroma
or color knob until the split vertical bars on the far left and
the bars at the far right are of equal brightness or hue if your
monitor shows them as blue, and that the two vertical bars match
with the two small sub bars below them. All four bars (two big
and two small) should appear to have the same value. Let me say
it again. When you have it right, all four of the bars (the left
bar with its sub and the right bar with its sub) should appear to
have the same hue or contrast.
>
Turn the Blue only switch off so all the colors show.
>
> For HD video there is no Phase adjustment. For NTSC analog
now adjust the Hue control or Phaseuntil
the two inner bars are also equal with their sub bars and each
other. At this point as you look at the screen all the four
vertical columns including the little sub bars should look equal
in intensity or brightness depending on what you monitor does
when you press 'blue only'.
>
> Unless you have a waveform and vectorscope with, your
monitor is now the
> only way for you to see how accurate your video is. Don't
adjust it!
>