OPTIKA MICROSCOPES B-380 Manual De Instrucciones página 10

5.0 AUTOMATIC LIGHT CONTROL (B-382-ALC MODELS)
B-382-ALC models have a special function called "Automatic Light Control".
The level of light is adjusted by the microscope in order to maintain the same level as the one the user
has chosen, no matter if the aperture of the diaphragm changes, another objective is inserted, opacity
of the sample changes, etc.
ALC BUTTON
BRIGHTNESS
ADJUSTMENT KNOB
1) Set the focus on the sample as described in the previous chapters, using the objective of your
choice.
2) Rotate the brightness adjustment knob in order to get a comfortable level of illumination. NOTE:
ALC system works properly with medium-to-high light intensity, do not set the brightness to a minimum
level.
3) Press the ALC button on the side of the microscope.
Now the ALC system is working: if you open or close the aperture diaphragm or change objective, the
system will try to maintain the same level of illumination as the one you stored when you pressed the
button.
4) Press the ALC button again to return to a manual control of illumination.
NOTE: ALC system is not suitable for use with phase contrast.
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