Christie D4K25 User Manual page 79

FRAME RATE N:M NOTES
These N:M ratios define how many frames to display per number of frames that
form one complete image. For all 3D use, the denominator is 2, indicating that two
frames (left and right) are combined into every complete display frame. For non-3D,
it is 1 frame. Set to the highest rate possible without image cropping.
DARK TIME and OUTPUT DELAY NOTES
The dark time between incoming left and right frames provides a brief interval of non-image time (in
microseconds) for your switching device (such as shutters in glasses) to complete its switch. When this interval
is set properly, neither eye sees image data intended for the other eye and this helps to prevent color artifacts
and ghosting. The output delay setting shifts the 3D sync in relation to the Dark Time interval, starting each
frame slightly earlier (-) or later (+). Too much offset can cause "bleed-through" where each eye sees some
data that is intended for the other, or causes color cropping since some DMD sequences may be clipped.
D4K25 User Manual
020-100882-02 Rev. 1 (07-2012)
Figure 6-14 Examples of Frame Rate N:M
Section 6: Projector Menus
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