BenQ SX930 Service Manual page 160

A.14 COLOR UNIFORMITY
Color Uniformity: △u'v'= [(u'1-u'0)^2+(v'1-v'0)^2]^1/2
(u'0,v'0): the average color of L1~L9
(u'1,v'1): the max deviation of L1~L13
A.15 PROJECTION OFFSET
Projection Offset (Vertical)
Mode A= x 100%
Mode B= x 100%
ℎ + ℎ
Mode C= x 100%, where as h' =
h=Half image height ;
△h= Distance between bottom of image above projection lens optical axis
△h'= Distance between Center of image above projection lens optical axis
Note: Measurement based on screen keystone within spec. condition.
Projection Offset (Vertical)
≜ ∆
Horizontal offset
160