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8
(b)
(a)
Caution (important):
When you use the 100X objective to observe the specimen, you have to finish
observing the specimen with the 4X, 10X, 40X objectives.
When you use the 100X objective to observe the specimen, you have to apply the
immersion oil on the top of the slide cover.
When you apply the immersion oil with the 100X objective, do not let the immersion
oil to contact with the dry objective lenses (especially the 40X). If the immersion oil is
on the dry objectives lens, please use the camera cleaning kit to clean the objectives
lens in time. The oil will damage the dry objective lenses.
After observing the specimen with the 100X objective, clean the 100X objective lens
first.
3.7 Adjusting condenser
1) Turn the condenser focus knob to raise or lower the condenser.
2) Raise the condenser when using high power objectives and lower it when using low
power objectives.
Note:
The centering of the condenser and the light axis of the objective are factory adjusted.
Do not attempt to re-adjust.
The highest position of the condenser has been factory adjusted. Do not attempt to
re-adjust.
3.8 Adjusting iris aperture diaphragm
Swing the iris diaphragm lever (
Fig. 9
) left or right to
adjust the aperture size.
Note:
The iris diaphragm is designed to adjust the aperture
size, not to adjust the brightness although the
brightness will be changed when it's adjusted. When
aperture is adjusted to smaller size, the contrast will be
increased and the depth of field will be increased as
well. Turn up the intensity of the light if the image is too
dim
.
Fig.8
Iris Diaphragm Lever
Fig.9
