Optika B-180 Manual De Instrucciones página 6

4.0 USING THE MICROSCOPE
4.1 Adjust the observation head
Loosen the lock-screw, turn the observation head to a comfortable position for observation,
and then lock the lock-screw.
4.2 Place the specimen on the stage
Lock the specimen slide on the mechanical stage using the slide clamp. Ensure that the spe-
cimen is centred over the stage opening by adjusting the coaxial knobs of the stage.
4.3 Lamp settings
The microscope is fitted with white LED illuminator. Before turning on the light, read the sec-
tion 5.3 about electrical safety precautions. Insert the plug of the cable into the power socket
and turn on the switch on the back of the main body. Turn the brightness adjustment wheel to
a brightness suitable for observation.
4.4 Adjust interpupillary distance
Hold the right and left parts of the observation head by both hands and adjust the interpupil-
lary distance by turning the two parts until one circle of light can be seen.
4.5 Focus and diopter adjustment
Turn the dioptric adjustment ring on the right eye tube until its bottom edge is at zero. Loosen
the focus-stop knob if needed, rotate the coarse focusing knob to bring the slide into focus
using an objective with a low magnification, and then lock the focus-stop knob. Adjust the fine
focusing knob to get the image sharp and clear while observing with your right eye, then turn
the left dioptric adjustment ring until a sharp and clear image can be observed also with the
other eye. Turn the nosepiece to choose the objective you need.
4.6 Condenser adjustment
Turn the condenser adjustment knob to move the condenser up or down for a clear and uni-
form sample illumination. The condenser centring screws can be used to centre the conden-
ser.
4.7 Set the numerical aperture
Adjust the aperture of the iris diaphragm to set the numerical aperture of the illuminator, thus
controlling image contrast and resolution.
4.8 Additional filters
The blue, yellow and frosted glass filters can be inserted in the flip-out filter holder underneath
the condenser.
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