HEIDENHAIN ND 1300 OED and Crosshair Systems User Manual
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10
Setup
Enabling point filtration
Touch the Point Filtration choice field and toggle the choice to Yes
to enable point filtration.
Specifying a filtration error limit
The quantization factor is the maximum acceptable error. For most measurements, a quantization factor of
3 microns or less can be applied. However, measurements that contain larger numbers of aberrant points
might benefit from higher quantization factors.
Touch the Quantization data field and enter the de-
sired error limit.
Specifying a filtration standard deviation range
The acceptable standard deviation range is determined by the
value of Sigma. For example, a Sigma of 2.0 produces a Standard
deviation range that includes 95.5% of the total population.
For most measurements, a Sigma of 2 or more can be applied.
However, measurements that include a large number of aberrant
points might benefit from a lower Sigma.
Touch the Sigma data
field and enter the desired
value.
Specifying the minimum percentage of retained points
The Proportion value determines the minimum percentage of data
points that will be retained. For example, a Proportion value of 0.75 will cause the system to retain a
minimum of 75% of all data points collected for a feature.
Touch the Proportion data field and enter the desired value.
Measure Screen
Error limit
± 1 Sigma
± 2 Sigma