Motic RED 200 Series, Инструкция по эксплуатации

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3.2.3 Centering the condenser (Models RED230 and 233)
• Fully open the field of view diaphragm and condenser aperture diaphragm.
• Set the specimen on the stage with the cover glass facing up.
• Bring the specimen image into focus, using the 10X objective.
• Close the field of view diaphragm to its minimum setting by means of the field diaphragm ring.
• Turn the condenser focus knob to bring the field diaphragm image into focus on the specimen plane.
• Adjust the condenser centering screws so that the image of the field diaphragm appears at the centre
of the field of view. At this time, stopping the field diaphragm image, just short of the maximum field of view,
may be convenient for centering.
• Adjust and centre the field diaphragm so that it is just outside the field of view for each magnification change.
3.2.4 Use of field diaphragm (Models RED230 and 233)
Figure 7
• The field diaphragm determines the illuminated area on the specimen. Rotating the field diaphragm ring changes
the size of the field diaphragm. For normal observation, the diaphragm is set slightly larger than the field of view.
If a larger than required area is illuminated, extraneous light will enter the field of view. This will create a flare in
the image and lower the contrast.
• The thickness of the glass slide must be 1.7mm.
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