OPTO-EDU A23.0910 User manual

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To ensure the safety and obtain satisfactory performance, please study
this instruction manual thoroughly before start to use your instrument.
A23.0910
Zoom Stereo Microscope, Parallel Light,
0.63x~8x,1:12.5
Instruction Manual

Contents
A23.0910
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Before Use
1. Components............................................................................................................................... 4
2. Assembling................................................................................................................................ 5
2-1 Assembling Scheme ......................................................................................................... 5
2-2 Assembling Steps............................................................................................................. 6
3. How to Use................................................................................................................................ 9
3-1 Set Illumination ............................................................................................................... 9
3-2 Adjust the Reflector ......................................................................................................... 9
3-3 Adjust the Focusing Tension......................................................................................................9
3-4 Adjust the Diopter and Focus........................................................................................ 10
3-5 Adjust the Interpupillary Distance ................................................................................ 10
3-6 Adjust the Elevation Angle of Observation Head .......................................................... 10
3-7 Turn on/off the Magnification Fixed Position Function................................................ 11
3-8 Use the Eye-cap............................................................................................................. 11
3-9 Adjust the Aperture Diaphragm..................................................................................... 12
3-10 Select the Light Path.................................................................................................... 12
3-11 Assemble and Use the CTV Adapter ............................................................................ 12
3-12 Assemble and Use the Polarizer Device...................................................................... 13
4. Troubleshooting.......................................................................................................................14

Before Use
A23.0910
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1. Operation Notice
Fig. 1
1. As the microscope is a high precision instrument,
always operate it with care, and avoid physical shake
during the operation.
2. Do not expose the microscope in the sun directly,
either not in the high temperature, damp, dust or acute
shake. Make sure the worktable is flat, horizontal and
firm enough.
Following environment is required when operating:
Indoor temperature: 5℃～40℃, Max relative humidity:
80%.
3. When moving the microscope, use both hands to hold
the position① and ② of the microscope. (See Fig.1)
★ It will damage the microscope by holding the
observation head, focusing knob, body or objectives
when moving.
4. External power adapter is used. Wide voltage range is
supported as 100~240VAC.
5. Use the special wire supplied by our company.
2. Maintenance
1. Keep all the surface of the lens clean. Wipe the lens gently with a soft lens tissue or blow
away the dust. Carefully wipe off oil or fingerprints on the lens surfaces with tissue
moistened with a little of 3:7 mixture of alcohol and ether.
2. Do not use organic solution to wipe the surface of other components, especially the surface
of plastic components. Please use the neutral detergent if necessary.
3. Never disassemble the microscope yourself, otherwise it will influence its function or
damage it.
4. After using, cover the microscope with a dust cover to prevent it from the dust, and store it
in a place free from moisture to avoidrusting.
5. To keep the performance of the microscope, please check it periodically. For more details,
please contact the agents nearby.

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Light Path
Selecting Pole
Aperture Diaphragm
Adjusting Rod
Tension
Adjusting
Knob
Main
Objective
Worktable
1. Components
A23.0
Microscope Body
Focusing
Bracket
Group
Coarse
Focusing
Knob
Clip
Base Group
Trinocular
Head
Eyepiece
Zooming
Knob
Lock
Knob
Fine
Focusing
Knob
Reflector Knob

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2-1 Assembling Scheme
Following is the Assembling Scheme to describe how to assemble the components, and the
numbers denote the assembling order.
★Before assembling, make sure there is no dust, dirt or other materials which will disturb
it. Assemble carefully and do not scrap any part or touch the glass surface.
2. Assembling A23.0910

A23.0910
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2-2 Assembling Steps
Fig. 2
Fig. 3
Fig. 4
2-2-1 Assemble the Focusing Bracket Group
Loosen the lock knob① of the focusing bracket group,
insert the hole② of focusing bracket group into the
column③, until the focusing bracket group to the
lowest position. Then tighten the lock knob① to prevent
the microscope from turning.
◎Slowly insert it, do not force too much.
◎ To avoid the microscope turnover, the focusing
bracket group must assemble on the same side to the
worktable of base group, as the left view of Fig. 3. If
assemble the focusing bracket group on the wrong side,
the microscope will turn over as the right view of Fig. 3.
2-2-2 Assemble the Microscope Body
1) Remove the decorative cover① of the focus bracket
group, and loosen the M4 inner hexagon screw with a
M4 inner hexagon spanner. (See Fig. 4)
2) Match the dovetail interface③ of the microscope
body with the dovetail groove② of the focus bracket
group, and insert it from top to bottom as the direction
shown in the figure.
3) Tighten the M4 inner hexagon screw on the focus
bracket group with a M4 inner hexagon spanner, then
put the decorative cover①back.
2-2-3 Assemble theObjective
1) Rotate the objective as the arrowhead direction shown
in the figure, and screw the objective ② into the
objective installation screw hole①. (See Fig. 5)
Fig. 5

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Fig. 6
2-2-4 Assemble the Head
1) Loosen the head lock-screw① fully with a M4 inner
hexagon spanner.
2) Make the two tubes face forward, from a little rear
position of the center, insert the coattail interface on the
bottom of head into the hole of body with a little rear
inclined. Match the orientation groove② of the head
with the orientation pin③ of the body, and then screw
down the lock screw①. (See Fig. 6)
2-2-5 Assemble the Eyepiece
1) Take down the eyepiece tube cover①.
2) Insert the eyepiece③ into the eyepiece tube, until it
touches the bottom. Lock the eyepiece by the lock-screw
② (See Fig. 7)
Fig. 7
Fig. 8
◎Install or Remove the Reticle
1) Unscrew the pressure ring from eyepiece (see Fig. 8).
2) Clean the reticle, then install it into the pressure ring
with the scaled surface upward (see Fig. 8).
3) Screw the pressure ring which is with reticle into the
eyepiece until tight enough.
4) To remove the reticle, first unscrew the pressure ring
from eyepiece, then take down the reticle and keep it
with clean paper packed.
2-2-6 Assemble (Remove) the Worktable
1) Place the worktable on the installation hole of the
base.
2) To remove the worktable, use fingertip to press down
the worktable nearby the pillar edge (as the arrowhead
direction shown in Fig. 9), then the other end of
worktable will turn up. (See Fig. 9)
Fig. 9
Press
down

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Fig. 10
Fig. 11
Fig. 12
2-2-7 Assemble the Clip
1) Use the clip to avoid the specimen moving.
2) Insert the clip① into the two holes of the base, as the
arrowhead direction shown in the figure. (See Fig. 10)
2-2-8 Fix the Microscope BodyPosition
1) Loosen the lock knob①, and rotate the microscope
body and the focusing bracket group left and right.
2) Match the center of zoom body group with the center
of worktable, then lock the lock knob①. (See Fig. 11)
2-2-9 Connect the LED Light Source and PowerCord
1) Make sure the main switch is at “O” (OFF)
position.(See Fig. 12)
2) Insert one end of the optical fiber①into the inner
hole② of the power supply box to the bottom, and align
the flat surface with the lock screw③, then lock it with
the lock screw③.
3) Insert the other end of the optical fiber① into the
hole of the base④, then lock it with the lock screw.
4) Insert one end of the power adapter⑥ into the inner
hole⑤ of the power supply box.
5) Insert one end of the power cable ⑦ into the
corresponding hole of the power adapter⑥, and the
other end into the power supply socket.
★ The power supply box supports wide voltage as
100-240V.
★ Don’t use strong force when the power cord is
bended or twisted, otherwise it will be damaged.
★ Use the special wire supplied by our company. If
it’s lost or damaged, choose one with the same
specifications.
★ Connect the power cord appropriately to make
sure the instrument is connected to ground.

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3-1 Set Illumination
1) Put through the power and turn on the main power
switch to“ON”.
2) Adjust the light adjustment knob ② until the
illumination is comfortable for observation. Rotate the
light adjustment knob clockwise to raise the
brightness. Rotate the light adjustment knob
counterclockwise to lower the brightness(See Fig.13).
Fig. 13
Fig. 14
Fig. 15
3-2 Adjust the Reflector
◎ The reflector has two surfaces, one is plane mirror,
the other is sandblasted aluminum. Both surfaces can
reflect the light, but the reflection of plane mirror is
stronger.
1) Adjusting the adjustment knob ① of the
reflector(See Fig. 14), can change the reflector surface,
also can change the lighting range after reflected.
2) The adjustment knob① of the reflector can be
moved front and rear according to the arrowhead
direction, to achieve different lighting effects.
3-3 Adjust the Focusing Tension
1) If the handle is very heavy when coarse focusing,
or the specimen leaves the focus plane soon after
focusing, or the stage declines itself, these problems
can be solved by adjusting the tension adjustment ring
①.(See Fig.15)
2) Rotate the tension adjustment ring① according to
the arrow direction in the figure, to tighten the
focusing system; rotate the tension adjustment ring①
in the opposite direction, to loosen the focusing
system.
3. How to Use A23.0910

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Left diopter Right diopter
adjustment
3-4 Adjust the Diopter and Focus
★ Before operating, make sure the eyepiece lock
screw is tighten.
1) Rotate the zoom knob to the maximum
ring adjustment
ring
Fig. 16
Fig. 17
magnification. (See Fig. 15)
2) Rotate the focusing knob if the image is unclear
when observed with the right eyepiece.
3) Rotate the zoom knob to the minimum
magnification.
4) Rotate the diopter adjustment ring of right eyepiece
if the image is unclear when observed with the right
eyepiece. (See Fig. 16)
5) Then rotate the zoom knob to the maximum
magnification, if the image is not clear enough when
observed with the right eyepiece, repeat Step (3)~(5)
as above.
6) Then rotate the zoom knob to the minimum
magnification, turn the diopter adjustment ring of left
eyepiece if the image is not clear enough when
observed with the left eyepiece. (See Fig. 16)
3-5 Adjust the Interpupillary Distance
Hold the left and right prism boxes and rotate them
according to the arrowhead pointed in Fig. 17, until
it’s comfortable to view.
Adjustable range: 50~76mm.
Fig. 18
3-6 Adjust the Elevation Angle of ObservationHead
1) Adjust the height and elevation of observation tube
to the most comfortable position for observation.
2) Use both hands to hold the binocular components,
to move it up or down to the position required. (See
Fig. 18)

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3-7 Turn on/off the Magnification Fixed Position
Function
Fig. 19
◎ Magnification fixed position function is providing
a ticking sound stop position for every zoom
magnification indicated value of the zoom knob.
When the ticking sound stop position function is
turned to STOP, the zoom magnification can be finely
adjusted around the zoom magnification indicated
value.
1) To turn on the ticking sound magnification fixed
positon fuction, rotate the ticking sound magnification
fixed positon screw① in clockwise(as the arrowhead
shown) to the end with an inner hexagon spanner.(See
Fig. 19)
Every magnification value on the zoom knob has a
ticking sound fixed position.
2) To turn off the ticking sound magnification fixed
positon fuction, rotate the ticking sound magnification
fixed positon screw① in counter-clockwise(in the
opposite direction of arrowhead) for two circles with
an inner hexagon spanner.(See Fig. 19)
★ Do not rotate it over the limit, otherwise it will
damage the housing and internal mechanisms of
the microscope.
3-8 Use the Eye-cap
◎ If the user wears glasses, turn over the eye-cap
border outward, and cover it on the eyepiece.
◎ If the user doesn’t wear glasses, cover the eye-cap
on the eyepiece. It can prevent the glasses touching the
eyepiece and avoid damaging the glasses and the
eyepiece. (See Fig.20)
Fig. 20

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3-9 Adjust the ApertureDiaphragm
Fig. 21
Adjust the aperture diaphragm by the aperture
diaphragm adjusting pole①. Pull it to the left to
enlarge the aperture diaphragm, while pull it to the
right to decrease the aperture diaphragm. (See Fig. 21)
In actual use, adjust the aperture diaphragm according
to the size of the sample image contrast, until it’s
comfortable for observation and the contrast is good.
3-10 Select the Light Path
When the light path selecting pole① is pushed to the
innermost, all the light will enter the binocular head,
which can used for binocular observation. (See Fig. 22)
When the light path selecting pole is pulled to the
outmost, all the light will enter the trinocular head,
which can used for TV&Photography.
Fig. 22
3-11Assemble and Use the CTVAdapter
Fig. 23
1) Loosen the lock screw① of trinocular head, and
take out the dust-cover② (See Fig. 23).
2) Take down the two dust-covers of the CTV adapter
③. Insert the CTV adapter into the trinocular head as
shown in the figure and screw down the lock screw①.
3) Connect the CCD or camera to the adapter③.
4) For binocular observation, after the image is clear,
pull the light path selecting pole④ to the outermost,
to observe the image. If the image is not clear, loosen
the lock screw⑤, and adjust the focusing screw⑥
until the image is clear, then tighten the lock screw⑤.

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Fig. 24
3-12 Assemble and Use the PolarizerDevice
1) Take off the worktable② from the base, and fix the
polarizer group① onto the base with a M3 sunk key
(make the flat side of polarizer group① close to the
pillar), then put back the worktable②. (See Fig. 24)
2) Loop the analyzer group③ on the outside diameter
of main objective④, and lock it with the lock screw of
analyzer group.
3) Rotate the adjusting ring⑤ of analyzer group③, to
adjust the vibrated direction of the analyzer, which is
360°rotatable.

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As the performance of microscope can’t play fully due to unfamiliar operations, the table below
can provide some solutions.
Problem
Cause
Solution
1. Optical System
(1) The image is too bright
or too dark.
Inappropriate adjustment to
brightness.
Readjust the brightness
appropriately.
(2) Stain or dust is observed
in the field of view.
Stains have accumulated on
the specimen.
Clean the specimen.
Stains have accumulated on
the eyepiece.
Clean the eyepiece.
Stains have accumulated on
the objective.
Clean the objective.
Stains have accumulated on
the working plate.
Clean the working plate.
(3) The right field of view
doesn’t superpose with the
left one.
Interpupillary distance is
incorrect.
Adjust the interpupillary
distance.
Diopter adjustment is
incorrect.
Adjust the diopter.
The eyepiece for the right
eye is different from the left
one.
Use the same eyepieces.
(4) Unclear image
Stains have accumulated on
the objective.
Clean the objective.
(5) Image is not clear when
focusing.
Diopter adjustment is
incorrect.
Adjust the diopter.
Focus is incorrect.
Adjust the focus.
(6) The eyes feel tired
easily.
Diopter adjustment is
incorrect.
Adjust the diopter.
The brightness is not right.
Adjust it.
2. Focus system
(1) The focusing knob is not
smooth.
The focusing knob is too
tight.
Loosen it properly.
(2) The image is not clear
due to the self-decline of the
microscope body.
The focusing knob is too
loose.
Tighten it properly.
4. Troubleshooting A23.0910