BM-800
23
Figure 23
Swing out Condenser
Aperture Diaphragm
21
Figure 21
22
Figure 22
4-7 Focus (figure21, figure22)
1
、
When not using the video set
Push in the light path selector lever (figure 25)
completely, then observe with both eyes. Use the
10
×
objective focus, to avoid the objective touch
with the specimen, you should raise the
mechanical stage at first, let the specimen close to
the objective, then slowly separating them to
focus.
The operator can converse turn the coarse focus
knob to get the specimen down ,and search
images in the 10
×
ocular simultaneously, then use
the fine knob to focus. At this moment, you can
replace other magnification objectives safely, and
focus without the risk of destroying the specimen.
2
、
When using the video set
Pull out the light path selector lever (see figure25),
observe with both eyes, when the image is sharp,
you can see the pictures directly on the video
screen which connected by the microphotograph
system through the video mount.
If you need to fix the stage on a vertical
position to make the observation become
more convenience, take use of the locking
set.
4-8
Adjusting
the
Swing
out
Condenser (Figure 23)
The center of the condenser and the light axes of
the objective are coaxial. It has been adjusted
before leaving factory, so the user needn’t to
adjust them by self.
The highest position of the condenser has been
adjusted too. It also needn’t any user’s operation.
Turn the condenser focus knob to shift the
condenser. It needs to raise the condenser when
using the high magnification objective, and to
decline when using the low magnification one.
