Runco D-73D operation manual Corner/Midpoint Alignment 169 Aspect Ratio, Optical engine

Installation

“Keystoning” usually occurs when the projector is tilted relative to the screen. “Pincushion” distortion can sometimes occur if the throw distance is very short and/or the projector is equipped with an anamorphic lens.

Corner/Midpoint Alignment — 16:9 Aspect Ratio:

1.Select the 16:9 aspect ratio using either the DHD Controller remote control unit (see Figure 2-8)or the OSD menu (press MENU, then select Aspect Ratio -> 16:9). This should move the anamorphic lenses out of the optical path.

2.On the DHD Controller remote control or front panel, press MENU.

3.Select Calibration from the Main Menu.

4.Select Adjustment Mode from the Calibration Menu and set it to Secondary.

Note	This procedure is normally performed only on the right (secondary)
	optical engine.

5.Select Image Alignment from the Calibration Menu.

6.Select Corner Alignment to correct a “keystoned” image by adjusting the image corner positions. Select Midpoint Alignment to correct pincushion distortion by adjusting the image edge mid-points. See Figure 3-29.

Use the built-in test pattern when adjusting the image corners or

Tip midpoints. To access it, check the Secondary (or Primary) Test

Pattern box in the Corner Alignment or Midpoint Alignment menu.

Top Left (x, y) Top Middle (x, y) Top Right (x, y)

Left	Center	Right
Middle		Middle
	(x, y)
(x, y)		(x)

Bottom Left (x, y) Bottom Middle (y) Bottom Right (x, y)

Notes:

1.Bottom Middle x = Top Middle x

2.Right Middle y = Left Middle y

3.Smaller “x” values move a point to the left; larger values move it to the right.

4.Smaller “y” values move a point up; larger values move it down.

Figure 3-29. Image Alignment Controls

62 D-73d Series Installation/Operation Manual