BestScope BS-2076 Series User manual

BS-2076 Series Microscope
Instruction manual
This instruction manual is suitable for BS-2076 laboratory biological microscope. In order to ensure safety, give full
play to the best performance of the instrument, and make you fully familiar with the use of this microscope, we
recommend that you read this manual thoroughly and carefully before operating the microscope.

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Contents BS-2076
Notice for use …………………………………………………………………………………………………………………2
1. Components Name…………………………………………………………………………………………………… 4
2. Overview of Each Institution ……………………………………………………………………………………5
3. Installation……………………………………………………………………………………………………………………7
3-1. Installation Diagram ………………………………………………………………………………………………7
3-2. Installation Steps……………………………………………………………………………………………………8
3-2-1. Installing the Mechanical Stage Bracket …………………………………………………………… 8
3-2-2. Installation of Mechanical Stage Device ……………………………………………………………8
3-2-3. Install the Observation Head and Photography Accessories…………………………………9
3-2-4. Install the Eyepiece………………………………………………………………………………………………9
3-2-5. Install Objective Lens ……………………………………………………………………………………………10
3-2-6. Install the Condenser …………………………………………………………………………………………… 10
4. Adjustment and Operation…………………………………………………………………………………………11
4-1. Turn On the Power …………………………………………………………………………………………………11
4-2. Adjust the Light Intensity ……………………………………………………………………………………… 11
4-3. Mount Specimen ……………………………………………………………………………………………………12
4-4. Adjust Interpupillary Distance …………………………………………………………………………………12
4-5. Light Path Switching ……………………………………………………………………………………………… 13
4-6. Focusing ………………………………………………………………………………………………………………… 13
4-7. Adjusting the Tightness of Focusing Handwheel………………………………………………………14
4-8. The Limit of Focusing…………………………………………………………………………………………………14
4-9. Condenser Adjustment……………………………………………………………………………………………14
5. Technical Specification…………………………………………………………………………………………………16
6. Troubleshooting Guide ……………………………………………………………………………………………… 17

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Notice for Use BS-2076
1. Safety Precautions
(1) Be careful when opening the box to prevent the lens glass from sticking to fingerprints,
sweat, etc. that affect the observation, and prevent the lens and other accessories from
being dropped and damaged.
(2) Avoid placing the microscope in a place subject to direct sunlight,high temperature or
high humidity, excessive dust, and strong vibration. Ensure that the stage is flat,level and
strong enough.
(3) When you need to move the microscope, hook the slot on the upper back of the rack
with one hand and support the bottom of the rack with the other hand.
(4) If bacterial solution or water splashes on the stage, objective lens or observation tube,
you should immediately unplug the power cord and wipe off the solution or water to
ensure that the microscope is dry. Otherwise, the instrument may be damaged.
(5) In order to avoid blocking the natural convection air used for cooling, make sure to keep
a distance of at least 10 cm between the left, right, top, and back of the microscope and
the wall and other objects.
(6) Ground the machine to avoid lightning strikes.
(7) To ensure safety, before replacing the LED bulb, make sure that the main switch is in the
"O" (disconnected) state, and cut off the power supply, while waiting for the bulb and lamp
room to cool down completely. (Designated bulb: 3W LED bulb).
(8) Input voltage check: The input voltage marked on the back of the microscope is
consistent with the power supply voltage, otherwise it will cause serious damage to the
microscope.
2. Maintenance and Storage
(1) All lenses are adjusted and do not remove themselves.
(2) Material lens Nosepiece and coarse micro-focus tuning mechanism, precise structure,
please do not easily disassemble.
(3) The instrument shall be kept clean, dust removed, and special attention to polluting the
optical parts.
(4) The stain of the lens such as fingerprints, grease can be gently wiped away with a clean
soft cotton cloth, lens paper or gauze dipped in anhydrous (pure) alcohol (ethanol) or
xylene.(Both ether and alcohol are extremely flammable, and be careful not to close
these chemicals to an open fire. Try to use these chemicals in well-ventilated rooms. )
(5) Do not use organic solvents to wipe the microscope nonoptical parts, if to clean, please
use a neutral detergent.
(6) When use, if the microscope is wet with liquid, cut off and dry.
(7) Never remove any part of the microscope, which will affect the microscope's function
or reduce its performance.
(8) The instrument shall be placed in a cool, dry place with a dust cover without a
microscope. After normal work, wait 15 minutes to cover the dust cover.

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BS-2076
(9) Microscope use environment requirements:
a) Indoor use;
b) The ambient temperature range: 5 ℃~30 ℃;
c) Relative humidity range: 45%~85%.
(10) Microscope storage and transportation environment requirements:
a) Environmental temperature range: -40 ℃~ + 55 ℃
b) Relative humidity range: 10%~95%
3.Safety Signs
The following signs are on the microscope. Find out what these symbols mean, and always use the microscope in
the safest way.
Warning:
Failure to operate the microscope in the manner specified in this specification may endanger the safety of the user.
Also, the microscope may also be damaged. The microscope shall always be operated in accordance with this
instruction.
Transmission light sources (Condenser or collector lens) may produce harmful optical radiation, and do not look
directly at the transmission lighting light, which may cause eye damage.
◎This microscope will not cause radiation and electromagnetic interference to the surrounding environment,
and meets the EMC certification standards.
Logns
Meaning of the
Power on
Power off
Direction of light intensity. When turning to the tip, the intensity
decreases from strong to weak
SLEEP
Dormant State
LOCK
Light intensity is locked
F.S :Field Stop, :Expanding F.S. :Narrowing F.S.
/
Incident Light/Transmission Light
This manual shall highlight the following symbols:
Giving no attention to the warnings in this instruction will cause operator personal
injury and / or damage to the instrument (including objects near the instrument)
★indicates that failure to follow this instruction will cause instrument damage
◎indicates comments (for operation and maintenance)

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1. Components Name BS-2076
Eyepiece
Viewing Head
Nosepiece
Objective
Stage
Condenser
Main body

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2. Overview of Each Institutions BS-2076
Lateral Adjustment Knob
LCD screen
Left Fine Focus Knob
Brightness
Adjustment Knob
Condenser
Focusing Knob
Tension Adjustment
Collar
Portrait Adjustment Knob
Aperture Diaphragm
LCD screen interface
Slide clip
Field Diaphragm
The symbol changes to " "
when the reflected light is on
Time can be adjusted for 1 minute
Number change from 0-100,
change, lattice value of 5
Solid Blue Point
Digital-Adjustable
Left Coarse
Focus Knob

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BS-2076
Right Fine Focus Knob
Locking Knob
Right Coarse Focus Knob

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3.Installation BS-2076
3-1Installation Diagram
The following Fig. shows the installation sequence of each component, and the Fig.shows the installation steps.
Before installation, verify that all parts are free of dust and dirt. Do not scratch any parts or the glass
surface.
Keep the general-purpose wrench provided. You will also use the part when you replace it.
Right Fine Focus Knob
Locking Knob
Right Coarse Focus Knob
⑤
④
③
⑥
②
①
⑤

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3-2.Installation Step BS-2076
3-2-1 Installing the Mechanical Stage Bracket
(Fig.1,2)
Rotate the thick operation wheel to lower
the tail of the frame to expose the end screw
as shown, then install the platform bracket
according to the path of Fig.1, align the tail
groove of the platform bracket in Fig.2 with
the tail projection of the rack, place the
platform bracket down until the limit screws
in Fig.3 are tightened inward with the general
wrench of the microscope belt.
3-2-2 Installation the Mechanical Stage
(Fig.3,4)
The mechanical stage shall be installed
according to the path of Fig. 3 first roughly
align the carrier hole center with the circle
center of the bracket, and then cover the
carrier platform down to the bracket
positioning circle.
After the stage is placed smoothly, tighten
the screw in Fig.4 inward with the internal
general purpose wrench of the microscope
band, so that the stage can not rotate and
shake.
①
Fig.1
②
Fig.2
③
Fig.3
④
⑤

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BS-2076
3-2-3 Install the Observation Head and
Photography Accessories (Fig.5)
1. installation trinocular observation head
Install the observation head into the
microscope circular swallow tail by the
path shown in Fig.5, and then the
screws are tightened with the internal
general wrench to secure the
observation head.
2. Installation of Photography Accessories
When loading the photographic
attachment, into the triocular
attachment interface with the path
shown in Fig.5, the screws are tightened
with the internal general plate hand to
secure the photographic attachment.
In the process of installing the
observation head, pay attention to
one hand always holding the
observation head to prevent falling
and falling.
When the triple observation head is not
used and the photographic accessories
are not installed, please cover the
triple attachment interface and
eyepiece interface with the
corresponding dust cover to prevent
ash from entering.
3-2-4 Install the Eyepiece (Fig.6)
1. Inserts the eyepiece into the watch
holder by the serial number in Fig.6 to
the face.
②
①
③
④
Fig.5
⑤
Fig.6

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BS-2076
3-2-5 Install Objective Lens (Fig.7)
1.The adjusts the coarse focus handwheel until
the mechanical carrier bracket drops to its low
limit.
2. After the customer turns on the power
supply, the converter turns to a certain
position, and the corresponding objective lens
doubling rate on the LCD screen will illuminate
(as shown in Fig.7), and the corresponding
objective lens is installed in that position.
Regularly clean the objective lens, and the
objective lens is very sensitive to dust.
During operation, search the samples with
a 10 × objective mirror and focus, and
then replace other proportional objective
mirrors as necessary.
During the conversion mirror, turn the
objective lens converter until a click is
heard to ensure that the desired objective
lens enters the center of the light path.
3-2-6 Install the Condenser (Fig.8)
Insert the spotlight into the path shown in
Fig.8 and push to the maximum. Then turn
the screw at the serial number in to
support the spotlight mirror;
Fig.7
①
②
Fig.8
10×

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4. Adjustment and Operation BS-2076
SLEEP
Fig.11
Fig.12
Fig.13
4-1 Turn On the Power (Fig.9)
Connect the adapter to the power supply and
then insert the adapter plug in the position in
Fig.9. Then dial the main switch on the back of the
microscope body to the-◎-state.
4-2 Adjust the Light Intensity (Fig.10)
When the knob rotates in the direction shown in
Fig.10, the light source increases, while the light
source weakens.
Other operations of the dimming knob for the
BS-2076 model (Fig.11, 12 and 13)
1. Click the knob: enter standby, the screen shows
"SLEEP", as shown in Fig.11. Unclick again, the
screen "SLEEP" disappears, display normal
working status;
2. Press knob 3s: to select a set fixed time after sleep
(Fig.12), the score grid value of time begins to
beat, click the knob to change the hour grid
value begins to beat. The increase or decrease
time can be realized by turning the knob, and
the score grid value is 1 minute; the maximum
value can be set for 8 hours. After the required
time, the time number beats three times after
the stop beating is successful. Time starts to
reduce the changes by points;
3. Double-click knob: Lightlock or unlock (Fig.13).
When locking, the dimmer handwheel fails, and
the LCD displays "LOCK", unlock does not
display; double-click the button again to unlock,
and "LOCK" disappears on the screen;
★"LOCK" means that the user sets a specific
brightness when using a multiple object
lens to avoid being changed by another
user with locking functions. (When this
case turns to another multiple, the
brightness automatically changes to the
corresponding multiple, but the dimmer
handwheel is disabled).
Fig.9
Fig.10
TIME
①

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BS-2076
4. Press + down: perform color temperature
adjustment (Fig.14).
After entering the color temperature
adjustment interface, release and rotate the
color temperature adjustment. The color
temperature adjustment range 3000K~7000K,
Press + to exit the color temperature
adjustment mode.
4-3 Mount Specimen (Fig.15)
Push the slide up slowly into the movable claw
and gently clip the slide.
Rotate the horizontal and longitudinal wheels
on the mechanical ruler to move the sample to
the desired position.
Be careful when replacing the objective. After
observing the specimen with a short working
distance objective lens, it may touch the
specimen when it needs to be replaced.
4-4 Adjust Interpupillary Distance (Fig.16)
Pupil Distance Range 47mm ~78mm. When
observing both eyes, hold binocular tube to
rotate around the axis, to adjust the pupil
distance, until the left and right vision field is
one, and the observation is comfortable.
Fig.15
Fig.16
3000K
Fig.14

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BS-2076
Fig.17
4-5 Light Path Switching (Fig.17)
For the binocular / triple switching observation
head, turn the knob to switch the optical path,
observe the camera when the knob points to
the position, and observe binocular
observation when the knob points to the
position.
4-6 Focusing (Fig. 18,19,20 and 21)
1 when not using camera devices
Turn the optical path switch knob (shown in
Fig.18) to the binocular observation position for
binocular observation.Focus with 10 × object
lens, to prevent the specimen and object lens,
the mechanical carrier platform should first rise,
make the specimen and objective lens close,
and then slowly reverse the coarse hand wheel,
to reduce the specimen, search the 10 ×
eyelens, and finally use the fine tuning focus
hand wheel fine focus to clear. At this time to
other yield mirrors, can achieve focal without
broken specimens.
2 when required for using camera devices
Rotate the optical path adjustment knob to
switch the optical path to the triocular
observation position and observe using the
camera device. Observe the display and focus
the field by adjusting the adjustment device in
Fig.19
Fig.18
①

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BS-2076
Fig.20
Fig.19
Both sides of the micro-hand wheel in the
convenience to dismantle, the hand wheel
with a strong magnetic suction. Just as
shown in the arrow, press the end of the
hand wheel inside to raise the other, and
then gently dial it from the raised end.
Assembly can only align in the center of the
hand wheel. This feature allows the two
tuning wheels to easily swap the left and
right to avoid contact with the platform
handle.
4-7 Adjusting the tightness of focusing
handwheel (Fig. 19)
The focus loose handwheel rotates in the
direction shown in the arrow of Fig.19, and
the more it rotates, the tighter the focus
handwheel is. Conversely, the more loose.
4-8 The Limit Of Focusing (Fig.20)
In actual use, if you want to limit the
platform height, that is, the upper position
of the focus, according to the situation, just
turn the lock hand wheel to the end of the
Fig.20 arrow direction in the corresponding
upper position.
4-9 Condenser adjustment (Fig.21)
⚫The spotlight mirror center should be
co-axial with the objective axis, the product
has been adjusted when the factory, the
user does not have to adjust itself.
⚫The highest position of the spotlight mirror
has been adjusted when the factory, the
user does not have to adjust itself.
⚫Turning the spotlight lens focus hand wheel
enables the spotlight lens to move up and
down. When using the high objective lens,
the spotlight lens rises, and the spotlight
lens can decrease when the low object lens
is used.
①
④
③
②
Fig.21

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BS-2076
Condenser centering
1. Turn the spotlight focus handwheel to raise the
spotlight to the highest position.
2. Focus on the sample with a 10 × objective lens.
3. Rotate the field aperture ring and narrow the
field aperture image to be visible in the field of
view.
4. Turn the spotlight focus wheel to focus the field
aperture image.
5. Turn the field of view appendix to the field of
view center turning the two spotlight pair center
screw with a universal adjusting wrench.
6. Gradually open the field aperture, and align
correctly if the field aperture image is in the
center and connected to the field of view.
7. In practice, the field of view appendix is slightly
increased, so that its image just cuts away from
the field of view.
8. Regulation of the aperture appendix
The aperture is designed for the adjustment of
the numerical aperture, not brightness. Typically,
a good image of the sufficient contrast can be
obtained when the aperture opens to 70~80% of
the objective lens exit pupil. To observe the
aperture appendix, desirable under the lens,
down from the lens out of the pupil.
9. Adjustment of the field-of-view appendix size
During operation, turn the field of view appendix
rotation circle, narrow the field of view
appendix, observe the field of view, if the
appendix is blurred, can turn the spotlight focus
hand wheel, lift the spotlight bracket clearly, and
then turn the field of view appendix to adjust to
the full lens field of view to reduce
miscellaneous and improve the quality of the
image.

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5.Technical Specification BS-2076
I. Main technical specifications and views
Optical system
NIS60 Infinite Distance Optical System (F200)
BS-2076
Viewing head
Hinged trinocular, 30 °tilt, pupil distance 47-78mm (5:5)
●
Hinged trinocular (0: 100 / 100: 0)
○
Eyepiece
Large Field Adjustable eyepiece 10 ×
●
Nosepiece
Coded five-hole Nosepiece
●
Objective
Infinite Far Flat Field Lens 4 ×, 10 ×, 20 × (Optional), 40 ×, 100 ×
●
Focusing
Coaxial coarse fine tuning focusing mechanism, fine tuning grid value of
0.001mm
●
Stage
Synchronous Belt Platform, Size 235 × 150mm, Mobile Range 78 × 54mm
●
Illumination
3W color temperature adjustable LED lamp source
●
Condenser
Condenser NA0.9
●
Photo accessories
1X, 0.5X C interface, adjustable focus
○
Note: ● Standard Outfit, ○Optional
Ⅱ. objective parameters
Ⅲ. Electrical Appliance Parameters
1) Input voltage: VAC100-240V 50/60 Hz
2) Output voltage: 5V
2) Lighting: 3W LED
Magnification
Numerical
Aperture (N.A)
Working Distance
(mm)
Cover-glass thickness
4X
0.10
30
-
10X
0.25
10.2
-
20X
0.40
6.4
0.17
40X
0.65
1.5
0.17
100X (oil)
1.25
0.2
0.17

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6. Trouble Shooting BS-2076
6.1 Optical part
Problem
Reason
The Solution
Edge darkness or
uneven field of
vision
Nosepiece is not in the right position (the
objective lens is not in the center of the
light path)
Go to the right position (turn the objective
lens to the light path)
Condenser is not central
Make it center
Dirty on lens (Condenser, objective,
eyepiece, collecting lens)
Clean
Field of in in of dirt
Dirty on lens (Condenser, objective,
eyepiece, collecting lens)
Clean
Dirty on the glass slide surface
Clean
Condenser position is too low
Adjust the height of the condenser
Poor quality (low
split rate, poor
contrast)
No glass coverslip on the specimen
Add glass coverslip
Glass coverslip is too thick or too thin
Use a cover glass with a standard thickness
(0.17mm)
Above the specimen and below the
reverse
Flip it Back
Oil immersed on dry lens (especially 40X
easy)
Clean
Dirty on lens (Condenser, objective,
eyepiece, collector lens)
Clean
Oil immersion lens without oil immersion
Use of oil immersion
Bubbles in oil
Multiple swing object lens to eliminate air
bubbles
Unspecified oil immersion was used
Using standard oil immersion
The aperture is too large
Adjust it to smaller
Dirty on the incident lens of the binocular
cylinder
Clean
The aperture is too small
Proper opening
Condenser position is too low
Correction position

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BS-2076
One side of the image
Polscope not in center of view or tilt
Reinstall the Condenser and adjust
carefully with the Condenser center
screw
Nosepiece is not at the location
Turn it in place
Specimens are in a floating shape
Reliable reinforcement
Image movement
during focus
Specimens float on the carrier table surface
Be firmly placed
Nosepiece is not at the location
Turn it in place
Insufficient lighting
brightness
Inaccurately adjusted brightness
Adjust the dimming knob
Condenser position is too low
Correct its position
Condenser is not central
In it
6.2 Mechanical part
Problem
Reason
The Solution
1. Image does not
focus with high
object lens
Slide is on reversed position
Cover glass coverslip is too thick
Flip the glass coverslip
Cover glass with standard thickness
(0.17 mm)
2. Contact the glass
when the
objective lens
changes from low
to high times
Slide is on reversed position
Cover glass coverslip is too thick
Flip the glass coverslip
Cover glass with standard thickness
(0.17 mm)
3. The slide could not
be hold by the
clamp
Slide clamp is not reliably fastened
Fasten it
4. Binocular image
does not coincide
Pupil distance is not adjusted correctly
Readjustment
5. Excessive eye
fatigue
No visual degree adjustment was
performed
Correct vision of properly
Improper lighting brightness
Adjust the positive light bulb voltage
6. Coarse focus
handwheel is hard
to turn
The adjustment ring is locked too tight
Relax it
7. Defocus during the
observation
process
The adjustment ring is locked too loose
Fasten it

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BS-2076
6.3 Electrical part
Problem
Reason
The Solution
1. Light is not on when
the switch is
switched on
No power supply
Check the electrical wire connection
LED lamp connection plug not inserted in
circuit board
Insert correctly
The LED lamp is broken
Replacement
2. The lamp suddenly
burned
Non-specified lamp was used
Too high in voltage
Replace it with the specified lamp. If
the condition has not changed,
please contact the service
department
3. Insufficient lighting
brightness
Non-specified lamp was used
Low voltage
Replace with the specified lamp
Increase Voltage
4. Light flashing or
unstable brightness
The lights are about to break down
Replacement
LED lamp connection plug is not correctly
inserted into circuit board
Check and firmly
After-sales service commitment:
The company provides free warranty and replacement of parts of the equipment due to the
product quality problems within 36 months, after leaving the factory.
The company provides lifelong maintenance of the products and long-term preferential spare
parts outside the warranty period.
Manufacturing and after-sales service Contact information:
Beijing BestScope Technology Co., Ltd.
Add: 4#811, No.26 Financial Street, Shi Jing Shan District, Beijing, China
Zip Code: 100043
Tel: [phone]
E-mail: [e-mail]
Http: www.bestscope.net