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brightness and contrast levels for and only for analog inputs. Note that the
calibration (in the Look Up Table) is not changed by these adjustments (All
the monitors are and remain factory calibrated):
Using a 100% black picture and an appropriate measurement device (a
spot meter recommended), decrease the brightness level using the OSD
controls until the measurement device displays a constant level (i.e. the
measured value no longer changes). Once this is achieved, increase the
brightness level slightly until the display is just above the absolute lowest
black level (one step is generally sufficient).
Similarly, set the white level using a 100%-white test pattern and the
measurement device. Only the contrast level should be adjusted to ensure
that the black level remains unchanged.
• Control again the black value did not change. In case it did you need to
duplicate the two previous steps until it does not change anymore (cause:
pedestal).
Increase the contrast level until the measurement device no longer detects
an increase in luminance. Once this is achieved, decrease the contrast
level slightly (1 or 2 steps is generally sufficient).
At this point, the display is configured for optimal performance with the
installed graphic board. If one is not yet satisfied with the luminance level,
the black and white levels can be further increased by adjusting the
backlight level in the OSD menu. Please note that higher backlight level
settings tend to reduce the stability of luminance over time.
6.2 Optimum picture quality
In order to achieve an optimum picture quality, the color flat panel display
HL1916S SERIAL should be operated with a graphics resolution of 1280
x 1024 pixels (settings for graphics card in the PC). When adjusting the
picture position and size, ensure that the picture appears exactly on the
active surface of the display and that it is not offset by even one pixel. For
example, if the horizontal position is offset by one step to the right, the
right-hand edge of the picture will disappear, and a black pixel column will
appear at the left-hand edge. And similarly for an offset to the left, top or
bottom. If the vertical lines are still slightly fuzzy, adjust the setting
"Frequency/phase" (see Section 6.4 "Description of the menus").
