HEIDENHAIN ND 1300 VED and Crosshair Systems - Manual (Page 287)

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11
Setup
Measure screen
The Measure screen contains fields for specifying the
method of data point collection, specifying the mini-
mum number of points required to measure different
geometries, locking the reference frame, selecting dis-
tance presentations and configuring point filtration.
Annotation
The annotation type defines the method of data point
collection. The annotation choice field can be toggled
between Backward and Forward types.
Backward annotation imposes no limit on the number of data points that can be collected by the user when
measuring a feature. For example, when backward annotation is used, a circle can be measured with as
few as the minimum number of points shown in the Min Circle data field, or as many as the user wishes to
collect up to a maximum of 99 points. When backward annotation is used, the user must press the Finish
key to complete the measurement and store measurement data in the feature list.
Forward annotation limits the number of data points collected in a feature measurement to the minimum
shown in the corresponding Min data field. For example, when forward annotation is used and the Min
Circle value is 3, the circle measurement will automatically be completed when 3 points have been col-
lected. No user interaction will be required to store the measurement data in the feature list.
Touch the Annotation choice field to toggle the choice be-
tween Backward and Forward annotation.
Minimum points required for a feature measurement
Each feature type is given a minimum data point requirement. The default minimums are the geometric
minimums necessary to define the corresponding feature type. For example, a minimum of 3 points is
required to define a circle, 2 for a line and 1 for a point. The minimum number required by the system
can be increased (up to 99) to improve the accuracy of measurements. This is most useful when Forward
annotation is used and the measurement data are automatically limited to the specified minimum.
To define the minimum data points required by the system to
complete a feature measurement, touch the corresponding Min
data field and enter the desired minimum number using the
number keys.
Measure Screen