HEIDENHAIN IK 5000 Addendum - Manual (Page 60)

60 1 Operation
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.1 Oper
ation
Autofocus final check
An option to perform a final autofocus check is available from the
Auto Focus tab in the Probe Library.
Enabling a final check helps to avoid missing an optimum focus point
when autofocusing with a search distance smaller than 1 mm and a
magnification greater than 20 x. An optimum focus point can be
missed due to skipping of the focus frames during the focus search,
machine drive mechanics, changes in lighting, or the objective lens
being used.
A final check compares the difference in contrast values of frames in
the range of 5 µm above to 5 µm below the initial focus point. If there
is a point with a larger contrast value found the system will focus on
the point of greater contrast.
To enable the the autofocus final check:
 Select Probe>Probe Library...
 Select the target camera and target magnification
 Select the Autofocus tab
 Check the check box next to Enable final check
Click Probe>Probe Library... Check the check box next to Enable final check