Portrait Mode Orientation; Calculating The Lens Offset - Christie D13HD-HS User Manual

Portrait mode orientation

When installing the projector in portrait orientation, it is recommended that the built in keypad and
power inputs face upwards. This allows access to the built in keypad and power connections during
operation.

Calculating the lens offset

Adjust the offset to align the image on the screen with full image size.
• The vertical image offset (shift) ranges for the projector are +/-60% (WUXGA) and +/-70%
(HD).
• The horizontal image offset (shift) range for the projector is +/-25% (HD/WUXGA).
• The method for calculating lens offset complies with industry standards. For example for
Vertical lens offset:
• At 0% offset (or on axis), the center of the image is on the lens center, so half of the
image appears above and half appears below the lens center.
• At +50% offset, all of the image appears above the lens center.
• The percentage (%) offset is calculated as the ratio of the number of pixels shifted up or
down to full image size. For example for WUXGA:
• Shifting up 600 pixels gives and offset of 600/1200 * 100% = 50%
• Shifting down 600 pixels gives and offset of -600/1200 * 100% = -50%
• Shifting up 720 pixels gives an offset of 720/1200 * 100% = 60%
• Shifting up 240 pixels gives an offset of 240/1200 * 100% = 20%
HS Series User Manual
020-000883-03 Rev. 1 (07-2016)
Installation
26