NEC PA803UL User Manual page 171

8. Appendix
Example: When projecting on a 150" screen
According to the tables of screen sizes and dimensions (→ page 153), H = 127.2" (323.1 cm), V = 79.5" (201.9 cm).
Adjustment range in the vertical direction: The projected image can be moved upwards 0.5 × 79.5" (201.9 cm) ≈ 39.6"
(101 cm), downwards 0.1 × 79.5" (201.9 cm) ≈ 8" (20 cm) (when the lens is at the center position). For a ceiling/front
installation, the above figures are inverted.
Adjustment range in the horizontal direction: The projected image can be moved to the left 0.2 × 127.2" (323.1 cm) ≈
25.5" (64.5 cm), to the right 0.2 × 127.2" (323.1 cm) ≈ 25.5" (64.5 cm).
* Figures differ by several % because the calculation is approximate.
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