1. Test overview.

This test makes it possible to check that the voltage applied on the terminal of the lamp corresponds to the required voltage. This test also checks that the circuit is not open (for example : a blown filament).
The software sends voltages ranging between 0 and 20V to the lamp and gets back the voltage on the terminal of the lamp by an analogical numerical conversion of the voltage.
If there is a problem on the supply voltage of the lamp, this could have repercussions over image quality, the scanning of films and the time of scanning.

2. Test conditions.

This test relates to the scanner only.
No film carrier must be present in the scanner during this test.
No film is necessary for this test.
The acceptance of the test is automatic.
No parameter is saved.

3. Pre-requirements.

A functional lamp must be connected.

4. Test realisation.

Click on RUN to carry out the test. The software will supply the lamp between 0 and 20V by step of 1V (below 13V, the lamp does not work). The voltage read for each step will be shown by a red curve, and the numerical values will be displayed in the execution window, with the circuit status.

5. Test acceptance.

The test is accepted if :

• The red curve is within the tolerance (2 grey curves).
• For each sent voltage, the circuit is not cut off (status).

6. Other affected tests.

If the voltages are slightly apart from the tolerances, no test will be really affected. On the other hand, if one of the voltages is zero, all the tests can stop functioning.

7. Trouble shooting.

If the lamp never ignites (zero voltages) : check the connection of the lamp, check the lamp, if not change the power supply.