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Installation
46 Runco LS-HB/LS-HB Ultra Installation/Operation Manual
PRE
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IMINAR
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Set Trigger Output to “Letterbox”: The LS-HB anamorphic lens solution maintains
constant image height independent of the aspect ratio, while using the full display
resolution of the projector. It accomplishes this by moving the anamorphic lens in front of
the primary lens when widescreen material is being viewed. When the viewer transitions
back to 16:9 or 4:3 source material, the anamorphic lens moves out of the light path.
Proceed as follows to confirm that the +12V trigger output to which the lens transport is
connected is configured for proper operation.
1. Project a 2.35:1 aspect ratio test pattern or other image on the screen.
2. Press MENU on the remote control.
3. Press or to select Control from the Main Menu.
4. If the +12V trigger output is set to Letterbox, skip to Step 7. Otherwise, continue with
Step 5.
5. Press or to highlight Trigger 1.
6. Press or to select Letterbox.
7. Select the Letterbox aspect ratio to move the anamorphic lens into position, if it isn’t
already. To do this, press the aspect ratio ( ) button repeatedly (refer to LS-HB
Remote Control on page 10).
Adjusting the Lens Position:
1. Adjust the vertical position and tilt of the lens so that the projector beam is passing
through the center of the lens and any residual pincushion distortion is about the
same at the top and bottom of the image. This typically results in the anamorphic lens
being below the center of the primary lens and tilted slightly downward.
2. Tighten the knobs.
3. Adjust the rotation of the Lens Transport Assembly so that the left and right sides of
the image are an equal distance from their respective screen borders.
4. Tighten the Pivot Screw and the four mounting screws holding the transport to the
Attachment Plate.
5. For optimum multiple aspect ratio performance, adjust the projector’s zoom so that a
1.85:1 aspect ratio movie is just masked by the top and bottom of the screen border
when the anamorphic lens is not in front of the primary lens. This way 1.85:1, 16:9
and 2.35-2.4:1 aspect ratio movies are all presented to fill the screen at a constant
height.
6. Remove the protective film from the
front of the anamorphic lens.
There may be some pincushion distortion even after the lens is
properly adjusted, especially at shorter throw distances. If this is the
case, Runco recommends that you slightly over-scan the image
into the screen frame area to mask the distortion.
Note