Levenhuk 2L NG Bedienungsanleitung Seite 6

Using the microscope
Unpacking and getting started
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Unpack the microscope.
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Make sure all the parts are present.
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Move the stage to the lowermost position using the focusing knob.
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Press the ON/OFF button located on the back side of the microscope base next to the power cord to
turn the microscope on.
Focusing
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Place an object on the stage and fix it with the slide holders.
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Rotating the revolving head, switch magnification to the 4x objective.
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Move the object to fix its thickest part exactly under the objective.
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Rotate the focusing knob to raise the stage until the objective is close to the specimen; keep
checking the distance between the objective and the object to avoid their contact.
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Look through the eyepiece installed in the monocular head and lower the stage slowly rotating the
focusing knob until you see the object image.
Such adjustment protects the frontal lens from contacting the object when you use objectives of other
magnifications; though, slight refocusing might be required.
Selecting the objective
We recommend that you start your observations with the lowest power objective; it helps to select a
segment for the detailed research. Once the segment is selected, you should center its image in the
microscope's field of view. This operation should be performed as precisely as possible, otherwise the
required segment might fail to appear in the field of view of the higher power objectives.
Camera
The digital camera was exclusively designed for use with this microscope.
The object image can be transferred to your PC display in its actual colors and stored in the PC
memory.
Levenhuk ToupView software is included in the package; it allows viewing and editing of the received
images. Supported file formats: *.bmp, *.jpg, *.jpeg, *.png, *.tif, *.tiff, *.gif, *.psd, *.ico, *.emf, etc.
The USB cable is used as camera power supply and for connection with PC.
Compatible OS: Windows XP/Vista/7/8 (32-bit and 64-bit), minimum Intel Core 2 2.8 GHz, USB 2.0 port.
Care and maintenance
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Never, under any circumstances, look directly at the Sun, another bright source of light or at a laser
through this device, as this may cause PERMANENT RETINAL DAMAGE and may lead to BLINDNESS.
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Take necessary precautions when using the device with children or others who have not read or who do not fully
understand these instructions.
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After unpacking your microscope and before using it for the first time check for integrity and durability of every
component and connection.
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Do not try to disassemble the device on your own for any reason. For repairs and cleaning of any kind, please
contact your local specialized service center.
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Protect the device from sudden impact and excessive mechanical force. Do not apply excessive pressure when
adjusting focus. Do not overtighten the locking screws.
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Do not touch the optical surfaces with your fingers. To clean the device exterior, use only special cleaning wipes
and special optics cleaning tools from Levenhuk. Do not use any corrosive or acetone-based fluids to clean the
optics.
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Abrasive particles, such as sand, should not be wiped off lenses, but instead blown off or brushed away with a
soft brush.
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Do not use the device for lengthy periods of time, or leave it unattended in direct sunlight. Keep the device away
from water and high humidity.
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