Barco R92112011, User Manual

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7. Advanced
1. In a fi rst phase, the dimming will be (mainly) done by the ECR (Enhanced Contrast Ratio)
2. When the ECR is at its minimum value, the CCD (Constant Contrast Dimmer) starts further dimming the light output until it is 0
For the High Contrast (HC) versions, the minimum ECR value is calibrated in the projector to coincide with a
lens aperture of approximately f/6.4, which leaves a light transmission of around 25%.
Motorized dimming (at different stages in the projector) insures a better dynamic behavior through ECR (Ex-
tended Contrast Ratio) and CCD (Constant Contrast Dimming) by enabling the possibility to adjust the light
output level of the projector and preserving the dynamic range.
In projectors having the NVG option, the dimming process is controlled in a different way. See the concerning
Appendix.
Each time the projector is restarted, the Time Of Day (TOD) is automatically set to Day mode to get full light
output, thus avoiding the menu being invisible due to low light output!
How to adjust the Time of Day (TOD)?
1. Press MENU to activate the Tool bar
2. Press → to select the Image item
3. Press ↓ to Pull down the Image menu
4. Use ↑ or ↓ to select Time of Day
Image 7-11
5. Press ENTER
A dialog box is displayed
Image 7-12
6. Use ← or → , the numeric keys on the remote, or the keypad to change the Time of Day
7.3.5 Input balance (RGB signals only)
Introduction: Unbalanced color signals
When transporting signals, there always is a risk of deterioration of the information contained in the signals.
The alterations of the three color signals will happen independently i.e. the colors will end to be unbalanced.
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