Vidikron VP-4200a - Manual (Page 47)

Operation
Vidikron PlasmaView Owner’s Operating Manual 37
PRE
L
IMINAR
Y
Sharpness: “Sharpness” is the amount of high-frequency detail in the image. To adjust
sharpness, select Sharpness from the Picture menu and press SET. On your external test
pattern source, select a pattern like the one shown in Figure 4-6. Adjust as needed, looking
for white edges around the transitions from black to gray and different sized lines in the
“sweep” patterns at the top and bottom. Lower the sharpness setting to eliminate them.
Figure 4-6. Typical Test Pattern for Adjusting Sharpness
White Balance (Installer Adjust mode): Select White Balance from the Installer
Adjust/Picture menu to remove any trace of color from the white areas of the image.
• Gain: Use the Gain controls to correct color imbalances in the bright areas of the image. A
good way to do this is to use a test pattern consisting mostly of solid white areas, such as
an 80 IRE “window” pattern. If the white areas contain traces of red, green or blue,
decrease the Gain for that color.
• Offset: Use the Offset controls in the White Balance sub-menu to correct color imbalances
in the dark areas of the image. A good way to do this is to use a test pattern consisting
mostly of dark gray areas, such as a 30 IRE “window” pattern. If the gray areas contain
traces of red, green or blue, decrease the Offset for that color.
To reset the white balance settings to the factory default values, select White Bal. Reset.
Then, press
to highlight YES and press SET.
Select Return to exit the White Balance menu.
Like the brightness and contrast controls, the color and tint controls are
interactive. A change to one may require a subtle change to the other in
order to achieve the optimum setting.
Note
WHITE BALANCE
R. GAIN : +128
G. GAIN : +128
B. GAIN : +128
R. OFFSET : +128
G. OFFSET : +128
B. OFFSET : +128
WHITE BAL. RESET
RETURN
ENTER SET EXIT MENU