HEIDENHAIN ND 1300 VED and Crosshair Systems - Manual (Page 280)

260 QC-300 Series User’s Guide
Calibrating video magnification pixel size
The pixel size of each video magnification must be calibrated before conducting measurements. Pixel
sizes are calibrated by measuring a circle artifact of known diameter using the Teach function, or by
measuring a straight edge using the Teach X and Teach Y functions.
Calibrating with a circle artifact
To calibrate pixel size using a circle artifact:
1 Select the desired magnification by touching the Magnification button or by
touching the ID number field.
2 Touch the Artifact Diameter data field and enter the known circle artifact diam-
eter using the number keys.
3 Touch the Teach button. The video screen will be
shown with instructions for measuring the circle arti-
fact.
4 Follow the instructions provided on the screen to
position and measure the circle. The X and Y pixel
sizes will be displayed in the Pixel Size data fields.