User's Manual

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picture source, cable length and video mode (e.g. VGA, SVGA, XGA) this
conversion may cause certain deviations which cannot be corrected
fully automatically by the flat panel display. A manual fine adjustment
is therefore necessary during which the flat panel display (or, more
precisely, the video digitizer) is matched to the respective video
source. The fine adjustment comprises e.g. setting the
horizontal/vertical picture position and the picture sharpness. T hi s
can be carried out for the color flat panel display HL1916S SERIAL
using an OSD menu.
To optimize the display settings for the installed graphic board, and
to ensure all gray levels are distinguishable, we recommend to adjust
the 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