Nikon DIAPHOT 300 Instructions Manual page 11

4. Select the NCB11 filter.
Hold the nonslip portion of the filter
slider to push in the NCB1 1 filter. Do
not touch the filter. Keep other filters
out of the optical path.
For phase contrast microscopy, set the
GIF (green interference) filter, instead of
the NCB1 1 filter, in the optical path.
Figure 2-4
5. Fully open the field aperture and
condenser aperture diaphragms.
Raise the field aperture diaphragm
lever.
Turn the condenser aperture diaphragm
lever to the right.
6. Adjust the condenser position.
Adjust the condenser to an
approximately correct position.
• System condenser turret unit
♦ LWD condenser
Rotate the condenser refocusing
stopper by half turn to loosen it,
and rotate the condenser focus
knob to lower the condenser to its
limit. Rotate the turret until the module A comes to the front (i.e., it enters
the optical path).
♦ ELWD condenser
Rotate the condenser focus knob to raise the condenser to the upper limit,
then lower the condenser by approx. 1cm from the limit. Rotate the turret
until the module A comes to the front (i.e., it enters the optical path).
• ELWD condenser
Rotate the condenser focus knob to raise the condenser to the upper limit,
then lower the condenser by approx. 2cm from the limit.
• SLWD condenser
The SLWD condenser requires no adjustment since it is fixed.