BestScope BS-2080MH10 User manual

Multi-viewing Microscope
Model Number
BS-2080MH10
Instruction Manual
This instruction manual is for the microscope BS-2080MH10. To insure safety and obtain optimum
performance and familiarize yourself fully with the use of this microscope. We recommend that you
read the manual thoroughly before operating the microscope ,Attain this manual instruction in an easily
accessible place near the microscope for the further reference.

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Contents BS-2080MH10
Use Notices
1. Name of Components ……………………………………………………1
2. Installation ……………………………………………………………… 2
2-1 Order of Installation ……………………………………………………………2
2-2 Installation Steps ……………………………………………………………… 3
3. Adjustment ………………………………………………………………10
4. Operation ………………………………………………………………11
4-1 Primary Minor Operation ………………………………………………… 11
4-2 Adjusting Secondary Minor …………………………… …………………… 16
5. Technical Specifications ………………………………………………… 17
6. Trouble Shooting …………………………………………………………18

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Use Notices BS-2080MH10
I. Safety note
1. Carefully open the box, avoid the accessories, like lens, dropping to ground and being damaged.
2. 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.
3. If the bacterium solution or the water splash to the stage, objective or viewing tube, pull out the
power cord at once, and wipe up the microscope. Otherwise, the instrument will be damaged.
4. When running, the lamp house and nearby parts will be very hot. Please ensure there is enough
cooling room for them.
5. Make sure the instrument is earthed, to avoid lighting strike.
6. For safety, be sure the main switch is in “O” (off) state before replace the halogen lamp or the fuse,
then cut off the power, and do the operation after the lamp bulb and the lamp house completely
cool.
7. Check the input voltage: be sure the input voltage which signed in the back of the microscope is
consistent with the power supply voltage, or it will bring a serious damage to the instrument.
8. Use the factory supplied power cord, please.
II. Maintenance
1. All the lenses have been well checked and adjusted. It is forbidden to disassemble them yourself.
2. The nosepiece and coarse/fine focus unit have a compact and precise frame, please don’t
disassemble them as possible 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 finger mark and oil, could be gently wiped with a piece of soft
cloth or tissue paper, gauze which has been immersed in pure alcohol or xylene. (notethatthe
alcohol and the xylene are all burned easily, do not let them near the fire, and use them in a
drafty room as possible as you can.)
5. Don’t use organic solvent to wipe the non-optical elements, when you need to clean, use the soft
detergent, please.
6. When using, if the microscope is splash by liquid, cut off the power at once,andwipeupthe
moisture.
7. Do not disassemble any parts of the microscope. That will affect the function or decline the
performance of the microscope.
8. Place the instrument in a cool, dry position. After using the microscope, remember to cover it
with dust helmet. Do wait for the lamp house cooling completely before cover.

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1. Name of Components BS-2080MH10
Video Port
Primary Minor
Trinocular Viewing Unit
Right Image Rotation
Connecting Tube
Secondary Minor
Binocular Viewing Device
Right Secondary Minor
Column support
Left Secondary Minor
Column support
Secondary Minor
Binocular Viewing Device
Left Image Rotation
Connecting Tube
Body Teaching Image
Rotation Minors
Microscope Body

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2. Installation BS-2080MH10
2-1 Order of Installation
Left Image Rotation
Connecting fitting
Mechanical Stage
Trinocular Viewing Unit
LED Pointer Image Rotation Set
Tow Binocular
Viewing Device
Microscope Body
Four Eyepieces Four EyepiecesTow Eyepieces
Tow Binocular
Viewing Device
Right Image Rotation
Connecting fitting
Left Secondary Minor
Column Support
Right Secondary Minor
Column Support
Left Connecting Fitting
Right Connecting Fitting
Objective
Lamp House
Video Port (optional)
①Installing the Mechanical Stage
②Installing the Lamp House
③Installing the Objective
④Connecting Teaching Image Rotation Set
⑤Connecting Left\Right Secondary Minor Set
⑥Stack Mounting Teaching Image Rotation Set
⑦Stack Mounting Secondary Minor Set
⑧Installing the Trinocular Viewing Unit
⑨Installing Binocular Viewing Device
⑩Installing Eyepiece and Video Port (optional)
① ②
③
④④
⑤⑤
⑥
⑦
⑦
⑧
⑨
⑨
⑩
⑩
⑩
⑩

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Figure 2
BS-2080MH10
2-2 Installing steps
Guide Board
Locking Block and Bolt
Figure 3
2-2-1 Installation Body’s chassis
1. Installing the Mechanical Stage
Support Device
Before installing the device, be sure to adjust
the coarse focus knob. Make the guide board
(see figure 1) down to the lowest position, so
you can install the mechanical stage support
device easily.
Hold on the mechanical stage support device
(figure 2), place it from the top of the guide
board (figure 1), let the device (figure2)
falling free until it reach the limit position.
Use the hexagon wrench screw down the
locking block, make the stage support device
(figure1) and the guide board fixed together.
The mechanical stage have been adjusted
horizontally and fixed together before leaving
factory. Do not disassemble unless necessary,
that may affect the observation precision of
the instrument.
Figure 1

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Figure 5
BS-2080MH10
3 Installing and Replacing the Lamp (figure4)
Please use the specified halogen Lamp 6V30W.
1. Hold to the bulb after you wrap it with gauze or other
protection materials, and then deeply insert it into the
lamp holder.
2. Replacing Lamp when using or soon after
When using, or soon after it is turned off, the lamp,
the lamp house and nearby parts will be very hot and
will cause serious burns. Please turn the main switch
on “O” (off), pull out power plug, and make sure the
bulb, the lamp room and periphery are all cool. Then,
you can do your replacing.
Please insert the lamp gently, or it will be damaged
by excessive extrusion
Do not touch the Halogen bulb with your bare
hands. It will shorten the service life or cause it to
burst. If you leave finger marks on the surface
carelessly, clean it with a dry soft cloth.
Figure 4
Bolt
Figure 6
Jack
Lamp House Bolt
2 Installing the Lamp House
Keep the bolt on the lamp house
(figure 4) in line with the jack on the
back of the microscope (like the show
of figure 5), then pushing the lamp
holder into the illumination kits gently
until they are against each other
(figure 6).

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BS-2080MH10
4 Installing the Objective
1. Adjusting the coarse focus knob until the
support device of the mechanical stage reach
its low limit position.
2. Wresting the lowest magnification objective
onto the nosepiece from the left or the right
side (figure 9), then push the nosepiece
clockwise, then place other objectives by the
sequence of low to high magnification
( figure 10).
Installing objective this way will make the
change of magnification to be easier while in
using.
Clean the objective regularly, the objective of
the inversed microscope is very sensitive to
dust.
When operating, use 10 ×magnification
objective to search specimen and focus
firstly, then replace with higher
magnification objective if necessary.
When replacing the objective, slowly
turning the nosepiece until you hear
“clicked”, that means the objective enter the
required position--the light path center.
Figure 7
Figure 8

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A-3 B-3A-2 A-2
B-2A-2
B-2
BS-2080MH10
l
2-2-2Connecting Teaching Image
Rotation Set
☆Spinning the left/right Image
Rotation Connecting Fitting
(figure9,figure11) into the
corresponding port of LED pointer
Image Rotation Set(figure10), and
make sure the coincidence of label
show in A-2,B-2. The result is
showing in the figure 16.
★When installing please make sure
the coincidence of label in the
left/right port of LED pointer
Image Rotation Set with the
left/right Connecting Fitting port
Figure 9 Figure 10 Figure 11
2-2-3 Connecting left/right
Secondary Minor Set
1. Spinning the left Connecting Fitting
(figure13) into left Secondary
Minor Column Support (figure
12), and make sure the
coincidence of the label show in
A-1. The result is showing in the
figure 16.
2. Spinning the right Connecting
Fitting (figure14) into right
Secondary Minor Column Support
(figure 15), and make sure the
coincidence of the label show in
B-1. The result is showing in the
figure 19.
★The height of left/right Secondary
Column Support have been
adjusted before leaving factory, Do
not adjustability unless necessary.
Figure 12
Left Secondary Minor
Column Support
Figure 13
Left Connecting fitting
Figure14
Right Connecting
Fitting
Figure 15 Right Secondary
Minor Column Support
A-1 A-1
B-1 B-1

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B-3 B-1
BS-2080MH10
2-2-4 Stack Mounting Teaching Set
1. Stack Mounting Teaching Image
Rotation Set
Please loosen the bolt on
microscope head and insert the
Teaching Image Rotation Set
(figure16) into Microscope head
installed (figure17) , turn to a
proper position, then use the
hexagon wrench screw down the
bolt to fix.
Figure 16
Figure 19
2. Stack Mounting Secondary Minor Set
Easing bolts off on the left Secondary
Minor A-3 port and the right
Secondary
Minor(figure18)B-3port,making them
and left/right Teaching Image
Rotation Set on the same level,
adjusting their distance and direction,
make sure their Connecting tube on a
horizontal and connecting on the
biggest port, then screwing down the
bolt to fix.
★Before installing, please make sure
the coincidence of label in the
left/right Secondary Minor A-3/B-3
port with the port of Teaching Image
Rotation Set.
Figure 17
A-1 A-3
B-3 B-1
Figure 18
BoltBolt
A-3 A-2 B-2 B-3

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BS-2080MH10
2-2-5 Installing Binocular/Trinocular
viewing Device
1. Please ease the bolt on the head of
the left/right Teaching Image
Rotation Set (figure20) installed,
insert Trinoclular viewing unit into
the head of the left/right Teaching
Image Rotation Set (figure16), turn
to a proper position, then use the
hexagon wrench screw down the
bolt to fix. The result is showing in
the figure21.
2. Ease bolt off on the left/right
Secondary Minor head, then insert
four Binocular Viewing Devices
into the left/right Secondary Minor
head separately, turn to a proper
position, use the hexagon wrench
screw down the bolt to fix. The
result is showing in the figure23.
★When installing four Binocular
Viewing Device, make sure the
coincidence of their numbers with
the numbers on the left Secondary
Minor head(A1,A2) and the right
Secondary Minor head
(B1,B2),otherwise, will affect the
image.
图20
Figure 21
Figure 22 Binocular Viewing Device
Figure 23
Figure 20 Trinoclular Viewing Unit
Bolt
Bolt

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BS-2080MH10
Figure 25Figure 24
Figure 27
3. Pull out the lid of eyepiece on the
eyepiece tube, insert eyepiece into
eyepiece tube, until they are against
each other. The result is showing in
the figure 27, 29.
4. Insert the video port (figure 25) into
the trinocular unit (figure 26), then
screw down the bolt to fix it, the
result is showing in figure 27.
Eyepiece
Figure 26
Figure 28
Figure 29

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3.Adjustment BS-2080MH10
Turn to B
Turn to B
Clocking Set
Left Fine Focus Knob
Left Coarse Focus Knob
Condenser Focus Knob
Right Coarse
Focus Knob
Right Coarse Focus Knob
Brightness Adjustment KnobLateral Adjustment Knob
Portrait Adjustment knob
Field Diaphragm
Swing out Condenser (with
Aperture Diaphragn)
Video Port (optional)
Light Path Selector Lever
Diopter Ring
Diopter Ring
Diopter Ring
Main Switch
Pointer Knob
Interpupillar Distance
Indicator
Interpupillar Distance Indicator
Interpupillar
Distance Indicator
Pointer Rocket

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Figure 30
4. Operation BS-2080MH10
4-1 Primary Minor operation
4-1-1 Turning on the Lamp (Figure 30)
Connect the power, turn on the main
switch (figure 30) to “-”(on).
4-1-2 Adjust Brightness (Figure 31)
Turning the brightness adjustment knob
clockwise, the voltage raise, and the
brightness strengthen; turning with the
anti-direction, the voltage decline, and the
brightness weaken.
Using the lamp in a low voltage condition,
will prolong the use life.
4-1-3 Adjust the Tension Adjustment
Collar (figure 32)
The tightness of the tension adjustment
collar has adjusted before leaving factory,
if finding it’s loosing (the mechanical
stage drop itself because of deadweight),
please turning the tension adjustment
collar until the tightness is in order.
Figure 31
Figure 32
Tension
Adjustment Collar
Main switch

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BS-2080MH10
Figure 33
4-1-4 Placing Specimen(figure 33)
Place the slide on the mechanical stage. Use the
stage clips to clamp the slide gently.
Turn the portrait and lateral adjustment knob of the
mechanical ruler, move the specimen onto the required
position.
Be careful when changing the objective. If you
finish the observation with the short working
distance objective, and want to change another one,
be careful of not letting the objective touch the
specimen.
4-1-5 Adjusting the Interpupillar Distance
(Figure 34)
The interpupillar distance range: 48mm ～75mm.
When observing with two eyes, hold on the left and
right prism holder, turn around the axis, adjusting the
interpupillar distance until the left and right fields of
view coincide completely.
4-1-6 Adjusting the Diopter (Figure 35)
The right ocular tube is fixed. So by turning the
left diopter ring after the right ocular focus on the
specimen, the operator who’s left and right eye has
different eyesight can obtain a comfortable focus
position with both eyes.
Figure 34
Figure 35
Diopter Ring

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BS-2080MH10
Figure 38
Swing out Condenser Aperture
Diaphragn
Figure 36
Figure 37
4-1-7 Focus (figure21, figure22)
1. When not using the video set
Push in the light path selector lever (figure 25)
completely, then observe with both eyes. Use the
10×objective focus, to avoid the objective touch with
the specimen, you should raise the mechanical stage
at first, let the specimen close to the objective, then
slowly separating them to focus.
The operator can converse turn the coarse focus knob
to get the specimen down ,and search images in the
10×ocular simultaneously, then use the fine knob to
focus. At this moment, you can replace other
magnification objectives safely, and focus without the
risk of destroying the specimen.
2. When using the video set
Pull out the light path selector lever (see figure25),
observe with both eyes, when the image is sharp, you
can see the pictures directly on the video screen
which connected by the micro photograph system
through the video mount.
If you need to fix the stage on a vertical position
to make the observation become more
convenience, take use of the locking set.
4-1-8Adjusting the Swing out
Condenser (Figure 23)
The center of the condenser and the light axes of the
objective are coaxial. It has been adjusted before
leaving factory, so the user needn’t to adjust them by
self.
The highest position of the condenser has been
adjusted too. It also needn’t any user’s operation.
Turn the condenser focus knob to shift the condenser.
It needs to raise the condenser when using the high
magnification objective, and to decline when using
the low magnification one.

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1. Using the Swing out Condenser
When using the low magnification objective, turn out the condenser, and let it away from the light path.
While using the high magnification objective, turn it into the light path.
2. Adjusting the Aperture Diaphragm
The aperture diaphragm is designed for the adjustment of the numerical aperture, not for the brightness.
Generally, reducing the diaphragm opening to 70- 80% of the N.A. value of the respective objective will
provide an image of acceptable quality. If you want to observe the image of the aperture diaphragm,
remove one eyepiece and look through the tube. You will see a dark circle encroaching on the bottom of the
tube.

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BS-2080MH10
Figure 39
4-1-9 Adjusting the Field Diaphragm
(Figure 39)
The control for the field diaphragm is a ring
used for adjusting the area of field
diaphragm. When using, turn the ring to
reduce the field diaphragm, look into the
field, if the diaphragm image is faintness,
do the follow steps: first, turn the condenser
focus knob, shift the condenser holder to
the position where the observed image of
the field of view is sharp; then open the
field diaphragm, let the image full of the
field of view, reduce the mixed light,
improving the quality of the image.
4-1-10 Adjusting Pointer (figure40)
When the image is sharp by observe with both
eyes, the image of pointer will on the field of
view simultaneity. If not, you can turn the
pointer rocker in four direction (up, down, left,
right) gently, make the pointer on the field of
view. If the image of pointer is unclear, you can
turn the pointer knob to adjust the lightness
until turn up a green sharp image.
★Please gently when turn the pointer rocker
or sipn the pointer konb, to protect inner
circuit of the pointer konb.
4-1-11 Switching the Light Path
Selection (Figure 41)
When the light path selector lever on the
trinocular viewing set is pushed in, all the
light enters the binocular tube, so you can
do the binocular observation. While the
lever pull out, some part of light enters the
binocular tube, the left go up, enter the
video tube, so you can observe through the
video equipment.
Figure 41
Pointer knob
Figure 40
Pointer rocker

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BS-2080MH10
4-2 Adjusting Secondary Minor
4-2-1AdjustingInterpupillar Distance
After adjusting the Primary Minor, observing
the Secondary Minor Set, it will be a sharp
image simultaneously. When observing with
two eyes, hold on the left/right prism bolder,
turn around the axis, adjusting the
interpupillar distance until the left/right fields
of view coincide completely.
4-2-2 Adjusting Diopter(figure43)
By turning the left diopter ring after the right
ocular focus on the specimen, the operator
whose left and right eye has different
eyesight can obtain a comfortable focus.
4-2-3 Adjusting Pointer (figure40)
It will be a clear green pointer image after
adjusting the Primary Minor, if the pointer
not clear or invisible, you can turn the pointer
knob moderately or turn the pointer rocker in
four direction (up, down, left, right) gently to
adjust lightness and height of the pointer,
which will see the clear pointer image
simultaneous on the field of view of Primary
Minor and Secondary Minor.
Interpupillar distance Indicator
Diopter Ring
Figure 42
Figure 43

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5．Technical Specifications BS-2080MH10
1. Main specifications
Optical System Infinite Optical System
Viewing Head
Compensation Free Trinocular Head, Inclined at 30, Interpupillar distance:
48-75mm
Compensation free binocular Head, Inclined at 30, Interpupillar distance:48-75mm
Eyepiece (Ocular) Exceed wide field ocular EW10X/22, tubeΦ30 matched
Nosepiece Backward Quintuple Nosepiece
Objective Infinite plan Achromatic: 4×, 10×, 40×, 100×
Focus System Coaxial Coarse and Fine Focusing System, Sensitivity and Graduation of Fine
Focus: 0.001mm
Stage Double layer mechanical stage, area: 185×142mm, movement range: 75×55mm
Koehler Illumination Exposed illumination system, Aspheric collector, halogen lamp 6V30W
Condenser Swing out condenser NA0.9/0.25
2. Configuration Table
Viewing Head Compensation Free Trinocular Head ●
Eyepiece Extra Wide Field Eyepiece ●
Objective Infinite plan objective: 4×, 10×, 40×, 100× ●
Infinite Plan Objective: 20× ○
Condenser Swing out Condenser NA0.9/0.25 ●
Video Accessories ○
Video Mount C Mount 1× ○
C Mount 0.5× ○
Polarization Device ○
Turret Phase Contrast
Device ○
Dark Field Device ○
Fluorescent
Attachment ○
Temperature Control
Device ○
Note: ●Standard outfit，○ Optional
3. Objective Specifications
Magnification
Numerical Value
Aperture Diaphragm
(N.A)
Working
Distance
(mm)
Thickness of
Cover Slip
(mm)
Conjugate
Distance
(mm)
Magnification
Sign
(Color loop)
4X 0.10 25.42 0.17 ∞ Red
10X 0.25 11 0.17 ∞ Yellow
40X 0.65 0.75 0.17 ∞ Baby Blue
100X 1.25 0.21 0.17 ∞ Black and
White Circle