VWR VisiScope 260 Series User manual

Model European Catalogue Number
STB260 630-3072
SZB260 630-3073
SZT260 630-3074
INSTRUCTION MANUAL
VWR
Stereomicroscope series 260
Version: 1.0
Issued: 29, 07, 2019
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Table of Contents
Legal Address of Manufacturer
Country of origin: ITALY
Europe
VWR International bvba
Researchpark Haasrode 2020
Geldenaaksebaan 464
B-3001 Leuven
+ 32 16 385011
http://be.vwr.com
1. Warning 3
2. Safety Information 3
3. Package Contents 3
4. Unpacking 3
5. Intended use 3
6. Symbols and conventions 3
7. ProductSpecications 4
8. Overview 4
8.1 STB260 4
8.2 SZB260 / SZT260 5
8.3 Assembling procedure 6
9. Use of the microscope 8
9.1 Adjust interpupillary distance 8
9.2 Focus 8
9.3 Adjusting the tension of the focus knob 8
9.4 Dioptric compensation 9
9.5 Magnication 9
9.6 Use of additional lens (SZB260/SZT260) 10
9.7 Use of illumination 11
9.8 Use with rechargeable batteries 11
9.9 Use of eye shields 11
10. Microphotography 12
10.1 Installing the C-mount adapter 12
10.2 Useofreexcameras 12
11. Troubleshooting 13
12. Repair and maintenance 14
13. Technical service 14
14. Warranty 14
15. Compliance with local laws and regulations 14
Disposal 15

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1. Warning
This microscope is a scientic precision instrument designed to last for many years with a minimum of mainte-
nance. It is built to high optical and mechanical standards and to withstand daily use.
We remind you that this manual contains important information on safety and maintenance, and that it must
therefore be made accessible to the instrument users.
We decline any responsibility deriving from incorrect instrument use that does not comply with this manual.
2. Safety Information
Avoiding Electrical Shock
Before plugging in the power supply, make sure that the supplying voltage of your region matches with the ope-
ration voltage of the equipment and that the lamp switch is in o󰀨 position.
Users should observe all safety regulations of the region. The equipment has acquired the CE safety label. Ho-
wever, users have full responsibility to use this equipment safely.
Please follow the guidelines below, and read this manual in its entirety to ensure safe operation of the unit.
3. Package Contents
DESCRIPTION QUANTITY
Stereomicroscope 1
Stereo head
-) Binocular, xed zoom: STB260
-) Binocular, variable zoom: SZB260
-) Trinocular, variable zoom: SZT260
1
Eyepiece WF10/21 1 PAIR
Transmitted light illuminator 1
Incident light illuminator 1
Stand with integrated focus system 1
Stage clips 1 PAIR
Power supply OUTPUT 5Vdc multiplug 1
Dust cover 1
4. Unpacking
The microscope is housed in a moulded Styrofoam container. Remove the tape from the edge of the container
and lift the top half of the container. Take care to ensure that the optical items (objectives and eyepieces) do not
fall out and get damaged. Using both hands (one around the neck and one around the base), lift the microscope
from the container and put it on a stable desk.
5. Intended use
For research and teaching use only. Not intended for any animal or human therapeutic or diagnostic use.
6. Symbols and conventions
The following chart is an illustrated glossary of the symbols that are used in this manual.
CAUTION
This symbol indicates a potential risk and alerts you to proceed with caution
ELECTRICAL SHOCK
This symbol indicates a risk of electrical shock.

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7. ProductSpecications
Model Head Eyepiece Objectives Working Distance Stand Illuminator
STB260 Binocular Wideeld
10x/21mm
2x - 4x
selectable
100 mm High-grade,
precision xed
with handle and
focus
Swiveling incident and transmitted with
brightness control, rechargeable batteries
SZB260 Binocular Wideeld
10x/21mm
0.7x - 4.5x
variable zoom
100 mm High-grade,
precision xed
with handle and
focus
Swiveling incident and transmitted with
brightness control, rechargeable batteries
SZT260 Trinocular Wideeld
10x/21mm
0.7x - 4.5x
variable zoom
100 mm High-grade,
precision xed
with handle and
focus
Swiveling incident and transmitted with
brightness control, rechargeable batteries
8. Overview
8.1 STB260
MAGNIFICATION
CHANGER
STAGE CLIPS
TRANSPORTATION
HANDLE
FOCUS KNOB
STAND
EYEPIECES
TRANSMITTED LIGHT
ON/OFF AND
INTENSITY CONTROL
INCIDENT LIGHT
ON/OFF AND
INTENSITY CONTROL
MICROSCOPE
BODY
TRANSLUCENT DISC
(TRANSMITTED LIGHT)
INCIDENT LIGHT
ILLUMINATOR

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8.2 SZB260 / SZT260
TRANSPORTATION
HANDLE
MICROSCOPE BODY
-) SZB260: BINOCULAR
-) SZT260: TRINOCULAR
INCIDENT LIGHT
ON/OFF AND
INTENSITY CONTROL
TRANSMITTED LIGHT
ON/OFF AND
INTENSITY CONTROL
FOCUS KNOB
INCIDENT LIGHT
ILLUMINATOR
STAGE CLIPS
STAND
TRANSLUCENT DISC
(TRANSMITTED LIGHT)
EYEPIECES
ZOOM KNOB
PHOTO/TV PORT
(ONLY SZT260)

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8.3 Assembling procedure
• The microscope is shipped from the factory
with the batteries already installed. However,
in some cases it is necessary to ship the mi-
croscope with the batteries disconnected.
1. Open the lid of the battery compartment. (Fig. 1)
2. Insert the provided rechargeable batteries (re-
specting the polarity of each battery). (Fig. 2)
3. Close the lid.
4. Insert the microscope body in the holder.(Fig. 3)
5. Lock the xing knob ①. (Fig. 4)
Fig. 1
Fig. 2
Fig. 3
Fig. 4
①

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6. Remove the eyepieces dust caps and insert the
eyepieces in the empty eyepiece sleeve. (Fig. 5)
7. Connect the jack of the power supply to the sock-
et in the rear part of the microscope base. (Fig. 6)
Fig. 5
Fig. 6

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9. Use of the microscope
9.1 Adjust interpupillary distance
Hold the right and left eyepiece tube with both hands
and adjust the interpupillary distance by moving the
two parts (Fig. 7) until one circle of light can be seen.
If two circles appear, the interpupillary distance is too
big, and if two overlapped circles appear, the interpu-
pillary distance is too small.
9.2 Focus
Put the sample to be observed on the stage plate
and focus the sample using the focusing knobs of the
stand ①. (Fig. 8)
9.3 Adjusting the tension of the focus knob
• This adjustment allows to increase or decre-
ase the tension of the knob by avoiding an
involuntary descent of the microscope body
under its own weight. Adjust the tension just
above the point where the focus is stable.
Grab the focus knobs with both hands and, holding
left knob rotate the right one in the direction shown in
Fig. 9 to increase the tension. Tension increases or
decreases according the sense of rotation of the right
focus knob.
Fig. 7
Fig. 8
Fig. 9
①
HOLD

9
Fig. 10
②
③
9.4 Dioptric compensation
• This compensation makes possible for peo-
ple wearing glasses to adjust the microscope
to their eyes and use the microscope without
glasses.
1. Put the zoom ② down to the lowest magnication
and focus the specimen with the focusing knobs
③. (Fig. 10)
2. Put the zoom to the maximum magnication and
repeat the focusing.
3. Return to the lowest magnication: the specimen
will be out of focus.
4. Adjust the diopter compensation ring of the right
eyepiece ④ until the image of the right eyepiece
is clear and sharp (Fig. 11). Repeat the procedure
for the left eyepiece.
5. Then, check the focus of the image for the whole
zoom range. It should now be perfectly parfocal
(focus is always maintained during the change of
magnication).
9.5 Magnication
STB260
1. Rotate the magnication changer ⑤ to insert the
desired lens in the optical path. (Fig. 12)
• Rotation in clockwise direction will change from
2X to 4X lens.
• Counterclockwise rotation will change from 4X to
2X lens.
SZB260/SZT260
1. Select the desired magnication by adjusting the
zoom knobs ⑥.
• Change the eyepieces and/or add an appropriate
additional lens if necessary.
• The microscope body is equipped with a “ma-
gnication lock” function that allows to obtain a
precise setting of the desired magnication. Ma-
gnication lock can be activated or deactivated
by operating with the provided allen wrench in the
hole ⑦ placed in front of the microscope body.
(Fig. 13)
Fig. 12
⑤
Fig. 13
Fig. 11
④
⑥⑦
⑥

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9.6 Use of additional lens (SZB260/SZT260)
Screw the desired additional lens on the microscope
body. (Fig. 14)
Each additional lens has a specic Working Distance
(see table below).
The stroke of the focus adapter could not compen-
sate the di󰀨erent working distances of the several
additonal lenses.
Fig. 14
Total magnication used can be calculated as:
Eyepiece magnication * Zoom magnication * Objective lens magnication.
Eyepiece 10X 15X 20X
Field number 21 15 10
Objective Total mag. F.O.V. (mm) Total mag. F.O.V. (mm) Total mag. F.O.V. (mm)
0,5X (W.D.165 mm) 3.5X-22.5X 59.99-9.32 5.25X-33.75X 28.57-4.44 7X-45X 14.28-2.22
0.75X (W.D. 114 mm) 5.25X-33.75X 40-6.21 7.87X-50.62X 19.06-2.96 10.50X-67.5X 9.52-1.48
1X (W.D. 100 mm) 7X-45X 29.99-4.66 10.5X-67.5X 10.95-2.22 14X-90X 7.14-1.11
1.5X (W.D. 47 mm) 10.50X-67.5X 20-3.10 15.75X-101.25X 9.52-1.48 21X-135X 4.76-0.74
Fig. 15
Fig. 16
9.6.1 Use of 0.5X additional lens
0.5X additional lens has a Working Distance of 165
mm and therefore the total stroke of the focus pillar
cannot compensate.
In order to let the 0.5X additional lens working pro-
perly, proceed as follows:
1. Screw the additional lens on the microscope body
as already described in chapter 8.6.
2. Uninstall the microscope body from the head hol-
der.
3. Install the provided spacer ① in the head holder
and screw the xing knob ②.(Fig. 15)
4. Re-install the microscope body onto the spacer
and screw the xing knob ③.(Fig. 16)
5. Begin working normally.
③
②
①