BestScope BS-3020 User manual

BS-3020 Stereo Microscope
User Manual
It is recommended strongly that you study this manual thoroughly before using the
microscope. Retain this manual in an easily accessible place near the work desk for
future reference.

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CONTENT
USER NOTICE................................................................................. 2
1. Components............................................................................ 4
2. Assembly.................................................................................. 5
2.1 Assembly Diagram......................................................................... 5
2.2 Detailed Assembly Procedure.....................................................6
3. Adjustment and Operation...................................................8
3.1 Adjusting Binocular Viewing Head............................................8
3.2 Focus Adjustment.......................................................................... 9
4. Specification..........................................................................10
5. Troubleshooting................................................................... 10
6. Outfit........................................................................................ 11

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USER NOTICE
1. Safety Precaution
1. Carefully open the box, avoid the accessories, like lens, dropping to ground and being
damaged.
2. Check the input voltage, be sure the input voltage which signed on the microscope is consistent
with the power supply voltage, or it will bring a serious damage to the instrument.
3. Do keep the instrument out of direct sunlight, high temperature or humidity, dusty and easy
shaking environment. Make sure the stage is smooth, horizontal and firm enough.
4. To prevent the microscope body from turning over, its pivot angle must be limited to 30°.
5. .A microscope is a precision instrument. Handle it with care and avoid subjecting it to sudden or
severe impact.
6. Make sure the instrument is earthed, to avoid lighting strike.
7. Do not disassemble any part of the microscope, especially the electrical parts on the bottom side
as this may result in electric shock.
8. Use the factory supplied power cord, please.
2. Maintenance and Storage
1. All the lenses have been well checked and adjusted. It is forbidden to disassemble them
yourself.
2. The binocular viewing head and focusing unit have a compact and precise frame; please don’t
disassemble them as possibly as you can.
3. Keep the instrument clean, wipe dust regularly, and be attention to avoid contaminating the
optical elements especially.
4. The contaminations on the prism, as fingerprint and oil, could be gently wipedwithapieceof
soft cloth or tissue paper, gauze which has been immersed in pure alcohol or ether. (Note that
the alcohol and ether are highly flammable, do keep them away from the fire or potential
sources of electrical sparks, and use them in a drafty room as possible as youcan.)
5. Do not attempt to use organic solvents to clean the microscope components other than the
glass components. To clean them, use a lint-free, soft cloth slightly moistened with a diluted
neutral detergent.
6. If the microscope is splashed by liquid during using, cut off the power at once, and wipe up the
moisture.
7. Do not disassemble any parts of the microscope, which will affect the functionordeclinethe
performance of the microscope.
8. Place the instrument in a cool, dry position. When not using the microscope, keep it covered
with a dust cover.

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Binocular head and zoom body
1. Components
Stereo Microscope BS-3020B
WF10×eyepieces
Diopter ring
Clamping knob
Standard base
Glass stage
stand
Focusing knob
Power Cord
Switch and light adjusting knob

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2. Assembly
2.1 Assembly Diagram
The diagram below shows how to assemble the various modules. The numbers indicate the order of
assembly.
★When assembling the microscope, make sure that all parts are free of dust and dirt, and avoid
scratching any parts or touching glass surfaces.
Microscope main body
③
Binocular head and zoom body
WF10×eyepieces
①
Power
④
②
Power cord

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2.2 Detailed Assembly Procedure
Fig. 3
2.2.1 Mounting binocular head (Fig.1)
Loose the clamping bolt③on the pillar④and insert
the binocular head and zoom body assembly②into the
bracket of the pillar, then screw down the bolt③.
2.2.2 Mounting eyepieces (Fig.1, Fig.2, Fig.3)
Remove the eyepiece dust caps①and gently
insert two adjustable eyepieces ⑤into the eyepiece
sleeves until they stops, as in Fig.3.
Fig. 2
⑤
Fig. 1
④
③
①
②
Note:
Working Environment Requirement:
1．Ambient temperature: 5 °Cto40°C(41°Fto
104°F), Maximum R.H: 85%.
2．High Temperature will result in a mildewing, dew and
even ruinous instrument.
3．Avoid placing the instrument in a dusty environment.
When ending your microscope operation, please cover it
with the dust cover.
4．Lay the microscope in a plan and stable position,
please.

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2.2.3 Connecting the power cord (Fig.4)
1. Clockwise rotate the left and right brightness
adjusting switches①until the end on (off) state
before connecting the power cord②.
2. Insert the power plug②into the power jack of the
microscope; make sure the connection is well.
3. Plug the power cord③into the power supply
receptacle safely. Make sure the connection is
well.
●Adjustable illumination for both LEDs (top and
bottom).
●Input Rating: 100V～240V.
Trinocular head is optional if video or photography
function is needed.
2.2.4 Video(Photography) accessories assembly
1. Installing the video set: Remove the dust cap of
the trinocular viewing tube, revolve the camera
set ⑤into the screw thread end---the video
adapter④with C mount, and insert the other end
into the tri-through port and screw down the
bolt⑥.
2. Installing the photography set: Remove the dust
cap of the trinocular viewing tube, install the
photography accessories⑦into the tri-through
port, and screw down the locking bolts⑥, change
the camera⑨gun with digital photography
adapter⑧, and insert the adapter into the
accessories, as in Fig 6.
P4
①
③
②
P6
⑥
⑦
⑨
⑧
P5
⑤
⑥
④
Fig. 4
Fig. 5
Fig. 6

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3. Adjustment and Operation
3.1 Adjusting Binocular Viewing Head
3.1.1 Adjusting interpupillary distance (Fig.7)
Different users have different interpupillary
distances. So when users change, do the interpupillary
distance adjustment.
While looking through the eyepieces, hold the left
and right of the binocular assembly①and adjust the
eyepieces by opening or closing them for binocular
vision until the left and right fields of view coincide
completely.
3.1.2 Adjusting diopter ring (Fig.8)
1．Set the dioptor rings of both eyepieces to
“0”position. (Do this when users change, because
different users have different diopters.)
2．Place an easy-to-observe specimen on the stage
plate.
3．Rotate the zoom body knob③to the highest
magnification 4.5×, and turn the focusing knob④to
focus the specimen.
4．Rotate the zoom body knob③to the lowest
magnification 0.7×, looking only into the left
eyepiece, adjust the diopter ring on left eyepiece to
focus the specimen. Then do the same thing for the
right one.
5．Repeat item 3 and 4 until the specimen image can
always focus without any adverse effect of the
changes of magnification on the definition of the
image.
●The working distance of the microscope is
97mm, the binocular head bracket⑤could be
mounted onto the higher or lower position
according to your needing. Remove the clamping
bolt with provided hexagonal driver and move the
bracket ⑤down to the lower position and set it with
original bolt (Fig.8).
P7
①
P8
②
⑤
④
③
Fig. 7
Fig. 8

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3. 2 Focus Adjustment
3.2.1 Adjusting the rotation tension of the
focus adjustment knob (Fig.9, Fig.10)
1．Rotate the focus adjustment knob①to move the
slider②to a lower place for fear that the zoom
body drops down suddenly if the tension is
decreased too much.
2．Hold the focus adjustment knobs①with both
hands, stop the left knob and rotate the right knob
to increase or decrease the focus knob tension.
3. Rotate two sides of the adjustment knobs in the
same direction (otherwise it will get loose) to
move the zoom body up and down to focus on the
specimen.
3.2.2 Changing the magnification
1. The zooming knots located at two sides of the
zooming body could change the magnification of the
specimen image.
2. Total Magnification = Magnification of zoom
body×magnification of eyepiece
Note: While using the auxiliary objective, it
should be multiplied by its magnification in
addition .
3.3 Illumination
1. Adjustable illumination for both LEDs (top and
bottom).
2. Brightness adjustment: the right brightness
adjustment knob③is used to adjust the bottom
illumination, and the left brightness adjustment
knob④is used to adjust the top illumination. Each
knob have its own on-off. Rotate anticlockwise to
open the power, and continue would increase
the brightness, keeping rotating clockwise would
decrease the brightness until it is power off.
③
P10
④
P9
②
①
Fig. 9
Fig. 10

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4. Specification
4.1 Zoom ratio:1:4.5
4.2 Objective magnification: 1×～4.5×
4.3 Binocular viewing head: Inclined at 45, interpupillary distance range: 55～75mm
4.4 Working distance: 97mm
4.5 Illumination system: Adjustable illumination for both LEDs (top and bottom)
5. Troubleshooting
Under certain conditions, performance of this unit may be adversely affected by factors other than
defects. If a problem occurs, please review the following list and take remedial action as needed. If you
cannot solve the problem after checking the entire list, please contact your local franchiser for assistance.
PROBLEM CAUSE SOLUTION PAGE
1．Incomplete binocular
vision.
Interpupillary distance is not
correctly adjusted.
Adjust it correctly
8
Diopter adjustment is
incomplete.
Complete diopter adjustment
2．Dirt is visible in field of
view
Dirt on specimen Clean specimen
3
Dirt on eyepiece Clean eyepiece
3．The visibility of the
image is poor. Dust on objective front lens. Clean lens surface
4. Specimen image blurs
when zoom magnification
is
changed.
Diopter ring is not correctly
adjusted. Adjust it correctly.
8
Not in complete focus on
specimen.
Focus specimen correctly at a
high magnification.
Auxiliary
objective
Working
distance
(mm)
Eyepiece
10×
Field of view 20
15×
Field of view 16
20×
Field of view 12
Magnification Actual field Magnification Actual field Magnification Actual field
No 97 10-45× Φ20-Φ4.4 15-67.5× Φ16-Φ3.56 20-90× Φ12-Φ2.67
0.75× 120 7.5-33.75× Φ26.7-Φ5.9 11.25-50.625× Φ21.3-Φ4.74 15-67.5× Φ16-Φ3.56
2× 30 20-90× Φ10-Φ2.2 30-135× Φ8-Φ1.78 40-180× Φ6-Φ1.33

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5．Coarse focus
adjustment knobs rotate
with too much resistance.
Tension adjustment ring is
too tight. Loosen it properly. 9
6．Zoom microscope body
drops or specimen goes
out of focus during
observation.
Tension adjustment ring is
too loose. Tighten it properly. 9

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7. Outfit
●: standard Outfit; ○: Optional
Components Specification Quantity BS-3020B
Main body Main body 1 ●
Observation
system
Binocular head
and zoom body
1: 4.3 1 ○
1: 4.5 1 ●
Trinocular head and zoom body 1 ○
Illuminator
Transmitted illuminator (LED) 1 ●
Reflected illuminator (LED) 1 ●
Eyepiece
10×Eyepiece 2 ●
15×Eyepiece 2 ○
20×Eyepiece 2 ○
Auxiliary
objective
0.75×objective 1 ○
2×objective 1 ○
digital camera 1 ○
camera adapter 1 ○
Stage plate Glass plate 1 ●
Power cord Power cord 1 ●