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Displacement Follower User’s Manual Version 1.4, April 19, 2004 IM1008
Page 21
Common Problems
Th most common errors are:
1
Improper target phase (L/D, D/L, etc.).
2
Improper centering of tracker on target.
3
Improper illumination of target:
The light source must be DC.
The light intensity must be calibrated for (-20 Dark) and (+20 Light). See Operating Procedures, page 16 .
4
Improper focusing of tracker on target. See Operating Procedures, page 16 .