DEK 265 horizon Engineering Specification page 27

Board Inspection
Chapter Issue 1 May 00
The vision system carries out various board inspections and are shown below:
Pad
Board
Paste
Y
X
Bridging Distance
Engineering Specification
ENGINEERING SPECIFICATION
MACHINE OPTIONS
Clean Board
The pad on a selected board site is learnt
as a reference for comparison with
inspected sites.
Paste Present (Basic)
Since the area of the pad is learnt,
and the area of paste can be recognized,
any change in pad area must be paste.
Hence the area of paste present can be
calculated.
Alignment (Advanced)
The centre of the paste is compared
to the centre of the pad to produce
alignment error information in X and Y.
Bridging (Advanced)
Since the area of paste can be
recognized, the distance between
two areas of paste (bridging) can
be calculated.
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