P7
2.
Install the lens hood so that the hood will shade the lenses from
precipitation and sunlight. This is important.
3.
Install four fresh “D” cell alkaline batteries. If operating in cold weather
(freezing) use carbon zinc batteries
4.
Hold the reflector in the beam, thus canceling the tone, and gradually move
toward the desired reflector location. (NOTE: THE TONE GENERALLY
CANNOT BE CANCELLED WHEN THE REFLECTOR IS HELD
CLOSER THAN ABOUT 8 FEET FROM THE SCANNER.)
5.
As the light beam leaves the scanner it spreads out in the shape of a cone.
At the approximate reflector location, find the center of the beam by the
following procedure.
Summary of Contents for TTC-4420
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