HEIDENHAIN ND 1300 VED and Crosshair Systems - Manual (Page 95)

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Measuring
NOTE
When video probes are used, the stage and optical system must be well maintained,
free of scratches and other damage and clean. The optical magnification and part
lighting must be prepared as described in Chapter 5: Probes.
Establishing the measurement reference
A reliable measurement reference must be established before part features can be probed and measured.
This reference will be created by the user and ensures a level part surface, precise part alignment and a
coordinate origin or datum zero. Reference features are presented in the feature list in blue, other features
are presented in black.
Leveling the part (optional)
When the surface plane of the part is not orthogonal to the measurement axis, small cosine errors can be
generated during the measuring process. These errors can be minimized or eliminated by leveling the
part.
CAUTION
Leveling is optional in most well-maintained systems. Additionally, if the depth of
field of the lens system is not much less than the level error, no benefit can be gained
from leveling the part.
To level the part:
1 Touch the Video window button and then touch the Skew/Level Measure icon.
The Measurement Process