Specifications

Template Training Guideline
The ScanSpection uses a template-matching technique to perform PCB
inspection. The precision of the inspection results relies heavily on the quality
of the templates selected.
The basic idea is to select an area with distinctive and consistent markings on
the device. Use the Magnification 2 for all devices larger than 0805. A high
magnification amplifies any small differences of the device and increases false
failure rate.
1. 0805 Resistor: Magnification 2 or 3, pass score 700; train on only the
letter, avoid the frame, select centre All Alternates. For better wrong device
discrimination, use Image 2, pass score 750, centre all Alternates.
2. 0805 Capacitor: Magnification 2 or 3, pass score 700; include a little bit of
the background, avoid the silk screen, avoid the solder, select centre all
Alternates. Because of the poor label quality, it is generally difficult to inspect
for wrong device on chip caps. For chip caps with no value label printed, it is
impossible to inspect for wrong device using visual techniques.
3. 0603 Resistor: Magnification 3 or 4, pass score 700; train on only the
letters, select centre all alternates.
4. 0603 Capacitor: Magnification 3 or 4, pass score 700, select centre all
alternates. Since the value of the caps is not usually printed on the 0603
capacitor, it will be impossible to inspect for the wrong device if this is the
case.