User's Manual

19" LCD MONITOR

REV A

6. Adjustments

6.1 Picture adjustment

This section describes the settings for operation of the flat panel display with

a video source. The most important settings are:

Adjusting the graphics memory of the video source

As with all monitors, the flat panel display also has certain limits, e.g.

maximum resolution and vertical frequency. The graphics adapter must be set

when using the flat panel display such that the limits are observed.

Fine adjustment of the flat panel display

Note

Fine adjustment of the flat panel display can only be carried out via the analog

port 15-pin SUB-D. The digital input (DVI-D) does not require a fine

adjustment since the display signal is always optimum.

RGB picture sources via 15-pin Sub-D connector supply analog signals which

are basically intended for conventional CRT monitors and which are

processed directly by them.

In contrast, the analog signals must be converted for a flat panel display into

digital signals by a video digitizer. Depending on the 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. This can be

carried out for the color flat panel display HL1926 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