Adjusting The Hp Sb21 Focus; Projected Image Size (Diagonal) - HP sb21 Owner's Manual

Adjusting the hp sb21 focus

Rotate the focus ring until the image is clear.
The projector will focus at distances from 1.0 m to 12 m (3.3 feet to 39.4 feet).

Projected image size (diagonal)

Screen
25"
(Diagonal)
Screen
20.0"x15.0"
Size (wxh)
Focal
3.3'
Distance
NOTE: This graph is for user's reference only.
Focus Ring
98" 123"
78.4"x58.6" 98.4"x73.8"
13.1' 16.4'
Focal
Distance
197" 246"
157.6"x118.2" 196.8"x147.6"
26.2' 32.8'
operation
sb21
Calculating the Projected
Image Size
The screen diagonal dimension
can be approximated by using one
of these formulas:
7.5*Distance(ft.)=Diagonal(in.)
0.625*Distance(m)=Diagonal(m)
For example:
If your sb21 is 10 feet from the
screen, the approximate screen
diagonal dimension will be
7.5*10 = 75 inches.
295"
236.2"x177.2"
39.4'
19