Christie Solaria CP2220 User Manual page 71

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 2
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.
4:2
24 Hz
DARK TIME and OUTPUT DELAY NOTES
The dark time between incoming L/R 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 properly set
and exactly suits the speed of your device, neither eye sees image data intended for the other eye. This helps to
prevent color artifacts and ghosting while ensuring that each eye sees all intended data.
The output delay setting shifts the 3D sync in relation to the Dark Time interval, starting each frame slightly
earlier (-) or later (+). Adjust only as necessary—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.
CP2220 User Manual
020-100420-06 Rev. 1 (03-2011)
24 Hz
A B
48 Hz
4 frames, 2 sources
(48 Hz x 2)
120 Hz
96 Hz
Figure 3-18 Examples of Frame Rate N:M
5:2
24 Hz 24 Hz
A B
48 Hz
5 frames, 2 sources:
(48 Hz x 2.5)
EXAMPLE
4:2 = 4 frames displayed
NOTE: Not for 2048 x 1080
6:2
24 Hz 24 Hz
A B
48 Hz
6 frames, 2 sources:
(48 Hz x 3)
144 Hz
Section 3: Operation
2 frames per image
3-27