34
●
The plate is damaged or dirty
Please correct all deficiencies and press
Capture
.
Note
Calibration is carried by the results of 11 snapshots.
Carefully observe the position of the plate during each capture!
In some positions it will be needed to rotate the plate.
After all the necessary snapshots are taken, calibration module will start automatically. Resulting accuracy
of calibration is specified
in the last line in pixels
. A good result is resulting accuracy
no worse than 0.05 pix
without the use of filters and 0.08 pix when you use blue light filters.
Memorize the initial accuracy value during calibration. Working with the scanner don't forget to once in a
while perform orientation - it also serves as an accuracy indicator. If the accuracy during orienting starts to
be very different from the original one, you need to re-calibrate the equipment.
Some advice on calibration:
●
Do not change the distance from the center of the plate to the scanner when turning the
plate. The exception are only snapshots in positions 10 and 11.
●
Do not rotate the plate at a very high angle. Ensure that all marks on the plate are visible from
both cameras, when you turn the table.
●
Be careful with calibration plates! It is not permitted to contaminate or perform any
mechanical damage to the surface with the marks. After the use store the plates in designated
case.
