BMS C1
3.3.4 Adjusting the Condenser(Fig.24)
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.
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.
3.3.5 Adjusting the Aperture Diaphragm
(Fig.25)
Turn the
Aperture Diaphragm Lever①，to adjust
the aperture size.
Aperture Diaphragm is designed for adjusting
the aperture size, not for adjusting
brightness.
Generally, reducing the diaphragm opening to
70- 80% of the N.A. value of the respective
objective will provide an image of acceptable
quality. If you want to observe the image of
the aperture diaphragm, remove one eyepiece
and look through the tube. You will see a dark
circle encroaching on the bottom of the tube.
3.3.6 Adjusting the Interpupillar Distance
(Fig.26)
The interpupillar distance range:
55mm～75mm
.
When observing with two eyes, hold on the left and
right prism holder, turn around the axis, adjust the
interpupillar distance until the left and right fields
of view coincide completely.
10
Fig.24
Fig.25
Fig.26
