HP xb31 Projected image size (diagonal), Adjusting the hp xb31 zoom and focus

		operation
Adjusting the hp xb31 zoom and focus
Zoom is adjusted by rotating the zoom ring.			xb31
Rotate the focus ring until the image is clear.
The projector will focus at distances from 1.14 m to 12 m (3.7 feet to 39.4 feet).
Zoom Ring	Focus Ring

Projected image size (diagonal)

Focal Distance

Calculating the Projected

Image Size

The screen diagonal dimension can be approximated by using one of these formulas:

Zoomed out 7.5*Distance(ft.)=Diagonal(in.) 0.625*Distance(m)=Diagonal(m) or

Zoomed in 6.25*Distance(ft.)=Diagonal(in.) 0.52*Distance(m)=Diagonal(m)

For example:

If your xb31 is 10 feet from the screen, the approximate zoomed out screen diagonal dimension will be 7.5*10 = 75 inches.

Screen	Max.	28”	98”	123”	197”	246”	295”
(Diagonal)	Min.	23”	82”	103”	164”	205”	246”
Screen	Max.(WxH)	22.4”x16.8”	78.4”x58.8”	98.4”x73.8”	157.6”x118.2”	196.8”x147.6”	236.0”x177.0”
Size	Min.(WxH)	18.4”x13.8”	65.6”x49.2”	82.4”x61.8”	131.2”x98.4”	164.0”x123.0”	196.8”x147.6”
Focal Distance		3.7’	13.1’	16.4’	26.2’	32.8’	39.4’

NOTE: This graph is for user’s reference only.

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