HEIDENHAIN ND 1300 OED and Crosshair Systems - Manual (Page 200)

182 QC-300 Series User’s Guide
Nonlinear error correction calibration can be performed using one of three methods:
• Calibrate from features obtained by measuring the calibration grid using the QC-300.
• Edit existing QC-300 calibration values if calibration adjustments are required.
• Import calibration values (NLEC text file) collected earlier by measuring the calibration grid
using a QC-5000.
The first two methods listed above can use artifact calibration files (.acf files) to specify certified artifact
calibration grid values.
Calibrating from features
The process of calibrating from features is shown
by this chart and described below. In most cases
this method is performed in the field.
1 Make sure that NLEC is disabled (Enabled
checkbox is cleared).
2 Define the grid. The grid size and cell size
data entry fields are shown at the bottom of the
NLEC setup screen.
Enter the grid size in terms of the number of X
and Y grid points, and then enter the cell size in
terms of the distance between points.
3 Load an .acf file of certified values if de-
sired.
Insert a USB drive into the USB port containing
the nlec.acf file at the root of the drive, and the
touch the Import/Export but-
ton. A pop-up window will
display the Import/Export
choices. Touch the Load
Acf button.