Vidikron VP-5000 - Manual (Page 39)

Operation
Vidikron PlasmaView Owner’s Operating Manual 29
PRE
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IMINAR
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Sharpness: “Sharpness” is the amount of high-frequency detail in the image. To adjust
sharpness, select Sharpness from the Picture Adjust menu and press MENU. 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
Video NR: To apply Digital Noise Reduction (DNR) to the input signal, select Video NR from
the Picture Adjust menu. Noise reduction is useful for clearing up noisy RGB images such as
those from a PC.
Use the left- or right-arrow buttons to select the desired amount of noise reduction, keeping
in mind that higher settings (which reduce high frequencies) may also “soften” the image.
Color Temp.: To adjust the color temperature, select Color Temp. from the Picture Adjust
menu. (Color temperature defines the “color of gray.”) Use the left- and/or right-arrow
buttons to select 5400K, 6500K, 8500K or 9300K. The default setting, 6500K, is appropriate for
most situations. Higher settings produce a “bluer” picture; lower ones impart a reddish hue
to the image.
White Balance: For each color temperature, you can fine-tune the white balance parameters
to remove any trace of color from the white areas of the image. To do this, select a color
temperature as described above and press MENU. Then:
• 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.
RED GAIN : 40
GREEN GAIN : 40
BLUE GAIN : 40
RED OFFSET : 40
GREEN OFFSET : 40
BLUE OFFSET : 40
RESET : OFF
WHITE BALANCE
SEL. ADJ. RETURN EXIT
COLOR TEMP. 6500K