1. Test overview.

This test is used to determine the distance needed to move the IR image horizontally in order to perfectly superimpose it on anRGB image (the vertical shift has been initialised during the calibration of the 135 Film carrier).
For this, the scanner will scan a B&W film and ascertain the horizontal shift to apply.
Note The vertical shift is in the CCD direction (physical shift between the CCD IR and the CCD RGB), therefore common to all the film carrier exposures. The horizontal shift is in the advance film direction, therefore different for each film carrier.
If the shift values are incorrect, the ADDR cannot function to its optimal.

2. Test conditions.

This test relates to the APS film carrier inserted in the scanner.
The APS film carrier must be inserted in the scanner to carry out this test.
The short B&W Film must be used for this test (ref. 070 100 423A):
The acceptance of the test is automatic.
The value of horizontal shift is saved in chapter FILM_CARRIER_APS with line SLOW_SCAN_OFFSET.

3. Pre-requirements.

• APS Cal Encoder 2 Test is accepted.

4. Test realisation.

Click on RUN to execute the test. A message will come up requiring the insertion the short B&W film. When the film is inserted (caution : Watch for the direction of film), click on OK.
The scanner will scan the whole film.
At the end of the scanning, the value of slow_scan_offset will be displayed.

5. Test acceptance.

The test is accepted if the slow_scan_offset lies between -20 and +20.

6. Other affected test.

• Test APS ADDR.

7. Trouble shooting.

None.