User`s manual

5. Menu and toolbar
Barco – iStudio – R5976569 – user's manual – revision 09 – March-2007
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5-34
If the physical aspect ratio of the display differs from the aspect ratio that is displayed on it this can be commit-
ted with the aspect ratio list. The following settings can be chosen:
setting meaning
none
default setting
displayed aspect ratio is the same as physical aspect ratio
4/3 displayed aspect ratio is 4/3
5/4 displayed aspect ratio is 5/4
16/9 displayed aspect ratio is 16/9
9/16 displayed aspect ratio is 9/16
Table 5-5
Settings for the aspect ratio list
The Genlock on first source checkbox enables the use of the genlock feature. This locks the refresh rate of the
projection module to the refresh rate of the signal of the first video source and thus guarantees a synchronized
update, which is especially helpful when displaying videos with slow movement. Not all H
YDRA hardware sup-
ports this feature.
The following timings support Genlock optimally:
timing condition
Projector Barco MaryLou
if a PAL source is locked, NTSC sources might not be displayed properly if
scaled too much.
Note that the settings of the projection module needs to be adapted as well
(switch async option to sync), please see the respective user’s manual of the
projection module.
Projector Barco Lucy
Projector Barco Lucy Dual
if a PAL source is locked, NTSC sources might not be displayed properly if
scaled too much.
Table 5-6
Genlock
Genlock can only be used, if the overlay input is not used!
Genlock does not work correctly for the following progressive formats of HD-SDI:
1080/30P, 1080/29.97P, 1080/24P, 1080/25P, 1080/23.98 !