User`s manual

Binarization Function Parameters (Series B SLS Only)
Ignore this field unless you selected one of the two
binarization analysis functions for this configuration and
you want to include the threshold level and probe position
parameters in this configuration. (For a complete
description of the binarization parameters, refer to Chapter
6, View Imuge, in this manual.)
Briefly, the binarization level is the luminance threshold at
which the SLS differentiates between the inspected object
and its background. It can be set to values from 0 to 255.
The lower the value, the closer the binarization level is to
the background luminance level; the higher the value, the
closer the binarization level is the the inspected object’s
luminance level.
The background (or “light”) probe’s position can be
adjusted to measure luminance anywhere in the SLS field
of view (FOV). The position is stated as a percentage of the
FOV ranging from 0% to 99.6%.
If appropriate, enter the values for these two parameters in
their respective fields.
Set Point Method (Series B SLS Only)
The Set Point Method field selects the “method” by which
the set points affect the discrete outputs on the SLS. You
can use this field to configure the SLS so that both set
points (A and B) operate on the same inspection result; that
is, either result A or result B. The effect is equivalent to
setting two range limits for one inspection result, such as
first edge or object width.
As an example, assume that result A represents an object’s
width, and you have selected “Both set points for Result
A.” Assume also that the nominal or “target” width is
represented by 4O%, the lower range limit by 38%. and the
upper range limit by 42%.
With set point A set to 388, set point B set to 42%, the
“Outputs N.O./Outputs N.C.” switch set to “N.C.,” and
output B inverted, both discrete outputs are open only when
result A is between 38% and 42%. Thus, when inspection
result A is above 42%, output B is closed, when the result
is below 38%, output A is closed.
These relationships arc shown in Figure 5.5 on page 5-12.
5-11