Meiji Techno MT9000 Series Specifications Page 16

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3.2
lncident Light
Operation
-
Brightfield
Incident light
operation
requires the installation of incident light objectives. The list of
part
numbers for
incident light objectives appears at the end ol this section.
r
First, set
your
interpupillary distance
on
the
microscope
eyetubes
by
push
or
pulling
them
apart
or
pushing
them closer
to fit
your
eyes.
When
set correctly,
you
will
see
one uniform
round
or
"fused"
field
of
view. Make
note
of
the distance
setting
when
adjusted
to
your
liking
so
you
can later
repeat the
setting.
.
Adjusting
the
brightness
is done with the
variable
brightness
control
knob
on the
vertical
illuminator
power
supply shown at
right.
o
Make sure
the field iris diaphragm
on
the
vertical illuminator
is
opened
all
the
way
to
start.
l
o
We recommend that
you
initially
use an easily
recognizable flat
specimen.
Place
that specimen on the stage.
o
Select
a
lower
power
"scanning"
objective
like the 4X
or
the 10X
to find the area
of
interest
on
the
specimen
quickly.
Be sure
the
objective
"clicks"
into
place
when
you
turn the
objective
nosepiece..
MA955 Vertical llluminator
Aoerture
lris
Filter slot
)
ield lris
.
By using
the
coarse
and fine focus knobs shown above, adjust
your
specimen
into
focus with
your
leJt
eye
closed
(looking
only through the
right
eyetube).
With the
specimen
in focus,
close
the right
eye
you
just
used and open
the le{t. lf the
specimen
is
out
of focus for the left eye,
adjust
the diopter
on the eyetube until
the focus in
correct.
The
microscope
is now
adjusted
Jor this user. Focusing eyetubes allows us to compensate for users that
wear
corrective
eye lenses. lf
you
wear
glasses, you
may
wanl lo remove
the
rubber
eyeguards.
Note: The aperture
iris
diaphragm
located
on
the vertical illuminator can be
"stopped
down" or closed
somewhat
to
give
the observation of
your
specimen
more
or
less
contrast or
resolving
power.
Stopping down the
iris
diaphragm decreases
resolution and brightness but increases image
contrast
and
deoth
oJ focus.
I
@
\\/
Briqhtness control
t5
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