Adept AdeptSight User Guide - Manual (Page 248)

Configuring Arc Caliper Properties
pair configuration, which are named First Edge and Second Edge.
3. Configure parameters for each edge. Refer to the following sections for help on con-
figuring Pair Settings, and using the display and Function Editor.
Edge Pair Parameters
There are two criteria that affect the choice of valid edges: Polarity and Edge Score Con-
straints.
Polarity
Polarity corresponds to the change in light values, moving from left to right in
the display, along the X-Axis in the region of interest. The caliper applies the
Polarity constraint before applying edge-score Constraints.
Polarity does not affect the edge score, but only edges that meet the selected
Polarity are retained as valid edges, regardless of their scores.
l Dark to Light will only accept edges occurring at transitions from a dark
area to a light area.
l Light to Dark will only accept edges occurring at transitions from a light
area to a dark area.
l Either will accept any edge, regardless of its polarity.
Edge Polarity
Edge Score Constraints
There are two types of constraints: Position and Magnitude. You can set the cal-
iper to use only one constraint or both. The graphical Function Editor is pro-
vided for viewing and setting each type of constraint.
l
If only one constraint is selected, edges are scored based on the selected
constraint.
AdeptSight User's Guide, Version 3.2.x, Updated: 8/23/2012
Page 248