English
10
Distance & Spot Size
As the distance (D) from the object increases, the spot size
(S) of the area measured by the unit becomes larger. The rela-
tionship between distance and spot size for each unit is listed
below. The focal point for each unit is 914mm (36”). The spot
sizes indicate 90% encircled energy.
Enhanced Model
D:S = 50:1
Standard Model
D:S = 30:1
S
D
S
D
Summary of Contents for 35629-20
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