HEIDENHAIN ND 1200 - Manual (Page 33)

ND 1200 QUADRA-CHEK 33
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Measur
e Calibrate the optical edge detector
The optical edge detector must be calibrated to correctly recognize
light to dark part edge transitions. Calibration should be performed
after startup, when the part is changed, when magnification is
changed, when measuring a part with fuzzy or irregular edges, and
when the optical system is repositioned or replaced.
Three types of calibrations can be performed:
„ Teach: Teach calibration should be performed after each startup or
whenever the part or magnification level changes. Teach calibration
trains the ND 1200 to recognize the light to dark transitions on your
comparator. Any change in the comparator light conditions should
be followed by a teach calibration.
„ D. Cal: Distance Calibration should be performed when measuring
parts with poorly defined edges. Perform a distance calibration to
fine tune the edge detector for fuzzy or irregular edges and for thick
parts or parts with rounded edges.
„ X Cal: Cross calibration compensates for the position offset
between the crosshairs and the edge detector sensor to produce
consistent results for all measuring probes. Perform cross
calibrations each time the edge detector sensor is changed or
repositioned.
Perform a Teach
U Press the TEACH soft key.
U Follow instructions displayed on the screen.
Perform a D. Cal
U Press MENU/EDGE/D. CAL
U Follow instructions displayed on the screen.
Perform an X Cal
U Press MENU/EDGE/X CAL
U Follow instructions displayed on the screen.
Skip these calibration instructions if your ND 1200 does
not include the optical edge detection option.