User's Manual Part 2

117
2920B EN 20031206
2 To determine the reference values for geometry, measure the dimensions A
and B of the geometry square on the test image.
3 Record these values as reference dimensions A
ref
and B
ref
on the
Drystar 5300 Chart 4 (‘Drystar 5300 Geometric Consistency Control Chart’).
Refer to Appendix C ‘Quality Control Charts’ on page 199.
These charts will be used for the annual quality test. For more information, refer to
‘Performing the annual QC test (Geometric Consistency Test)’ on page 121.
4 Save this film for future reference.
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).