User Manual

58
2831A EN 20041201Advanced operation (key-operator mode)
DRYSTAR 5302 USER MANUAL
Performing the Annual QC tests
Geometric Consistency Test
To be able to notice fluctuations in image size and aspect ratio, you must
perform this procedure once a year.
1 First, perform the daily test.
2 Use the QC test image of the weekly test and measure the dimensions A and B of
the geometric square. Refer to ‘Establishing the image geometry reference values’
on page 52.
3 Record these values as measured dimensions A and B on Chart 4 (‘Drystar 5302
Geometric Consistency Control Chart’).
4 Compare the measured A and B dimensions with the reference dimension
values, A
ref and B ref on the Drystar 5302 Chart 4 (‘Drystar 5302 Geometric
Consistency Control Chart’).
The differences between measured dimensions of A and B and the reference values A
ref and B ref should be less than or equal to 1.0%.
5 Check for image distortion.
6 Calculate the aspect ratio by dividing A by B.
The result must be 1 +/- 0.01
Make sure to measure distance A from the left edge of the left line to the
right edge of the right line and distance B from the upper edge of the
upper line to the lower edge of the lower line.
We strongly recommend using a 30 cm (12-inch) machinist scale with
0.5 mm divisions (1/64 inch).
If the image size or distortion values are outside of limits, contact Agfa
service to resolve the problem.