Fig. 1
V. OPERATION
• Summary
of
Putting
the Microscope in
Operation
1.
Match the line voltage selector switch
to
local mains voltage
(for
CHAI.
(See
page
5,)
2. Switch on
the
light source.
3.
Adjust the
trimmer
screw.
(See
page
7.1
4.
Place
a specimen slide on the
stage.
(See
page
7.)
5.
Loosen the
automatic
pre-focusing lever.
6.
Coarse
focus
with
a
low
power objective.
7.
Make interpupillary
and
diopter
adjustments.
ISee
page
8.)
8.
Swing in the desired objective.
9.
Adjust light intensity.
10. Fine focus.
11. Lock the automatic pre-focusing lever.
(See
page
8.1
12. Adjust the aperture iris diaphragm. ISee
page
9.1
A. Adjustment
of
Minimum
Line Voltage (CHA)
The
minimum
voltage required
for
the ligh t source can be adjusted
with
the rheostat
trimmer
screw
at
the microscope
base
plate
in accordance
with
the
line
voltage and
frequency.
The
built·in
rheostat incorporates a
thyristor
in its semi-conductor
circuit
for
the
following
advantages:
(a)
Extremely
fine
adjustment
of
light
intensity
can
be
easily achieved.
(bl Flickering
of
the bulb filament
is
eliminated and the light intensity
is
stabilized.
Icl
Increased life expectancy
of
the bulb.
For
adjustment
of
the
minimum
line
voltage, ascertain
that
the voltage selector switch
is
set
to
conform
with
the local mains voltage, and the sliding
control
lever
CV
is
positioned closest
to
you
(low
voltage). and then
activate the main switch
CD.
If
the
bulb
is
dimly
lit,
the secondary
VOltage
is
correct.
If
it
is
not
lit
at all,
rotate the rheostat
trimmer
screw @ gradually
with
a
coin,
until
the
bulb
is
dimly
lit;
then push the sliding
control
lever
forward
in
order
to
obtain
optimum
light
intensity. (Fig. 1)
8.
Placing a Specimen Slide on the Stage
NOTE:
1) Cover
glass:
Olympus objectives
with
an
engraving
"0.17"
are corrected
for
use
with
cover
glasses
of
0.17mm
thickness (No. 1%).
2) Specimen slide:
It
is
recommended
to
use
specimen slides
of
O.8mm
to
1.5mm
thickness.
However,
for
use
with
the immersion
darkfield
condenser
BH-DCW (optionally availablel. a specimen slide between
O.8mm
to
1.2mm thickness
is
preferable.
7
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