Diversified Ceramics DISPLACEMENT FOLLOWER 5100 - Manual (Page 23)

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 .