Page 11 of 26
4.2 Switching on the display
Switch on the flat panel display using the power switch. The operation
LED lights up (color: green, provided the timing has been recognized
– please refer to section 7 "Fault diagnostics").
4.3 Adjusting the image geometry
The display automatically recognizes the used standard, and set-up
values for each standard are preprogrammed. However, depending on the
graphics card used, it may still be necessary to align and size the
picture for the selected standard (see Section 6.1 "Picture
adjustment"). Normally auto adjust will work.
4.4 Adjusting the brightness and contrast
The brightness and contrast must be adjusted for the respective
graphics card (different output levels) in the system on site.
Note on adjustment
−
Use the SMPTE test pattern.
−
Adjust the brightness so that image sections with 5% and 0%
blackness still visibly contrast from one another.
−
Adjust the contrast so that image sections with 95% and 100%
whiteness still visibly contrast from one another. To adapt the
luminosity to the ambient lighting, adjust the backlight brightness
(note: 180 cd/m² factory setting is then modified).
4.5 Screen saver
A screen saver function should be used in order to reduce "image
sticking" which can occur in TFT displays.
It is high risk to display a static graphic over half an hour.
Image sticking is the effect where a faint image of the previous screen
contents can still be seen after the display contents have changed.
By using a screen saver with permanently changing screen contents,
unnecessary effects of the same image are avoided.
If the keyboard is locked, contact the servicing department in order
to unlock it. The guarantee is cancelled if you unlock it yourself!
