User`s manual

405-00026-00iNspect Express User’s Manual
14 Rev 1600; 12 July 2010
d. Click on the “check” button to accept changes and close the Line Properties box. Click on
the red X button to close without changes.
• Lighting, lens, focus, and exposure all affect the edge sensitivity and the sharpness and number
of edges in the image.
• There is a limit to the amount of information (graphics and highlighted edges) the vision sys-
tem can display. Setting sensitivity to 98% or greater may cause many edges to be drawn in
only the top half of the image, and no edges in the lower half. If this occurs, you must set the
sensitivity to a lower number. The application will not identify edges in the lower part of the
image if the limit is reached, even when the Edge Sensitivity box is closed.
• Generally, few or no edges will be displayed for a setting of 50% or lower.
• If you cannot find any edges in the image, the lighting may be too dim, too bright, or the sensi-
tivity may be set too low. Hover the cursor over the edge of the video window and right-click to
open the Edge Sensitivity box. Move the slider to anywhere between 70% and 90%, release,
and wait for the display to update.
NOTE Increasing the Edge Sensitivity also increases processing time! You should first
try adjusting your lighting, focus and exposure to improve the image if possible,
before increasing the Edge Sensitivity. An image that appears dark to the eye
still contains more edges. An image that appears over-exposed or “washed out”
contains fewer edges.
Using the Tolerance Settings
Most measurements have a Tolerance Setting; some are 1 sided, but most are 2 sided. Measure-
ments are often specified as a value and tolerance, such as 100 +/– 5. This means the part is good
if the measured value is between 95 (100 – 5) and 105 (100 + 5) and otherwise the part is rejected.
This information would be entered in the Tool Properties menu like this:
You can also disable the Recycle values in the Application Setup page (in Internet Explorer). The
100 +/– tolerance would look like this:
A different specification may include information that the value is 100 +/– 5 and a part can be
recycled or re-machined if the measurement is 100 +/– 7.