OPERATION (cont.)
SELECTING OBJECTIVE
MAGNIFICATION
1. There are two objectives. The lower
magnification objective has a greater
depth of field and view.
2. In order to observe the specimen
easily use the lower magnification
objective first. Then, by rotating the
case, the magnification can be
changed.
CHANGING THE INTERPUPILLARY
DISTANCE
1. The distance between the observer's
pupils is the interpupillary distance.
2. To adjust the interpupillary distance
rotate the prism caps until both eyes
coincide with the image in the
eyepiece.
FOCUSING
1. Remove the lens protective cover.
2. Place the specimen on the working
stage.
3. Focus the specimen with the left eye
first while turning the focus knob until
the image appears clear and sharp.
4. Rotate the right eyepiece ring until the
images in each eyepiece coincide and
are sharp and clear.
CHANGING THE BULB
1. Disconnect the power cord from the
electrical outlet before changing the
bulb.
2. When the bulb is cool, remove the
oblique illuminator cap and remove
the halogen bulb with cap.
3. Replace with a new halogen bulb.
4. Open the window in the base plate and
replace the halogen lamp or
fluorescent lamp of transmitted
illuminator.
FOCUSING
1. Turn the focusing knob away or toward
you until a clear image is viewed.
2. If the image is unclear, adjust the
height of the elevator up or down,
then turn the focusing knob again.
ZOOM MAGNIFICATION
1. Turn the zoom magnification knob to
the desired magnification and field of
view.
2. In most situations, it is recommended
that you focus at the lowest
magnification, then move to a higher
magnification and re-focus as
necessary.
3. If the image is not clear to both eyes
at the same time, the diopter ring may
need adjustment.
DIOPTER RING ADJUSTMENT
1. To adjust the eyepiece for viewing with
or without eyeglasses and for
differences in acuity between the right
and left eyes, follow the following
steps:
a. Observe an image through the left
eyepiece and bring a specific point
into focus using the focus knob.
b. By turning the diopter ring
adjustment for the left eyepiece,
bring the same point into sharp
focus.
c.Then bring the same point into
focus through the right eyepiece
by turning the right diopter ring.
d.With more than one viewer, each
viewer should note their own
diopter ring position for the left
and right eyepieces, then before
viewing set the diopter ring
adjustments to that setting.
CHANGING THE BULB
1. Disconnect the power cord from the
electrical outlet.
2. When the bulb is cool, remove the
oblique illuminator cap and remove
the halogen bulb with cap.
3. Replace with a new halogen bulb.
4. Open the window in the base plate
and replace the halogen lamp or
fluorescent lamp of transmitted
illuminator.
Model AY11228
Model AY11232
MODEL AY11230/AY11234
MICROSCOPE USAGE
BARSKA Model AY11230 and Model AY11234 are trinocular
microscopes designed for biological studies such as specimen
examination. They can also be used for examining bacteria and for
general clinical and medical studies. Simple design and use and the
vertical tube make them is useful for school classroom instruction.
CONSTRUCTION
BARSKA Model AY11230 is a fixed power trinocular stereo
microscope. It is constructed with two optical paths at the same
angle. It is equipped with transmitted illumination and oblique
illumination. By using this instrument, the user can observe and
enlarge the right side stereo image. BARSKA Model AY11234 is a
zoom trinocular stereo microscope. The object being viewed is
enlarged through two identical sized sets of right and left eye
lenses. The zoom provides different magnification and features an
inversion system which allows the image to be viewed normally
and right side up.
10
9
Model AY11230
Model AY11234
Diopter
Adjustment
Diopter
Adjustment
Prism
Cap
Prism
Cap
Eyepiece
Stage
Lens
Stage
Vertical
Tube
Vertical
Tube
Illumination
Controls
Rotary
Case
Spring
Clips
Spring
Clips
Focus
Knob
Magnification
Adjustment
Knob
Focus
Knob
Tightening
Knob
Oblique
Illuminator
Oblique
Illuminator
Lens
Housing
Eyepiece
Illumination
Controls
