Calibration
5. Use the light meter to calibrate the output of the light source. Place the light meter sensor over the hole in the mounting
bracket. (The light meter sensor must completely cover the hole in the bracket to prevent any additional light from leaking
into the meter).
6. Turn on the Fostec Light Source and let it warm up for about 30 seconds.
7. Move the switch on the light source control PCB to the LOW position (down). A reading of 1.7 Foot Lamberts +/-0.1 should
be produced by the light source.
8. Move the switch on the light source control PCB to the HIGH position (down). A reading of 21 Foot Lamberts +/-0.5 should
be produced by the light source.
9. If both switch settings produce light levels that are too high or too low, adjust the aperture control knob slightly to correct the
light output.
10. If both readings cannot be obtained from a single aperture setting when changing between the HIGH and LOW switch
positions, the light source control board will need to be aligned (see Calibration procedures following).
78
Service
Periodic Maintenance
Contents
Schematics
Illustrated Parts
Installation
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