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400T 75421
Инструкция к товару Страница: 9

Levenhuk 400T 75421 Инструкция к товару онлайн [9/64] 851700

Levenhuk 400 Series Microscopes

General Information

Read the user manual carefully before you start working with a microscope. Levenhuk 400 Series biological microscopes are

safe for health, life and property of the consumer and the environment when properly used, and meets the requirements of

international standards. These microscopes are designed for observing transparent objects in the transmitted light using the

bright eld method. They perform well in clinical research and tests; teaching demonstrations; bacterioscopy and cytology

in medical and health establishments, laboratories, universities; and may be used for scientic research in agriculture and

microbiology.

Microscope assembly

• Unpack the microscope carefully and place it on a at surface.

• Remove the plastic bags and dustproof cover of the eyepiece head.

• Install the monocular, binocular, trinocular head or LCD screen and tighten the locking screw.

• Inspect all the items included in the kit and dene their purpose.

• Open the battery compartment, position the batteries according to the polarity marking on the battery compartment,

reinsert the battery compartment door and turn on the microscope.Before using the microscope, it is necessary to charge

the batteries: insert the batteries into the battery compartment (observe the polarity) and connect the microscope to the

mains using the power adapter.

Use

Please refer to the g. 1а (monocular model), g. 1b (binocular model), g. 1c (trinocular model) and g. 1d (model with

LCD screen).

• Turn on the power and the illumination will turn on. Set the brightness at approximately 70%. Place the specimen on the

stage. Make sure the clips hold the specimen rmly in place.

• Iris diaphragm should be adjusted in accordance with numerical aperture of a lens. The best practice is to make the iris

diaphragm slightly smaller than the aperture of the selected lens. Open or close the iris diaphragm using the adjustment

screws. If the adjustment screw is turned to the right, the iris diaphragm is fully open. Note: the diaphragm is not intended

for adjusting the brightness of the illumination. To adjust the brightness, use the brightness adjustment knob.

• Slide the lter holder, place the lter in it and then return the holder to its initial position.

• To change the objective magnication, turn the revolving nosepiece until it clicks.

• Make sure that the lens does not touch the sample when adjusting the focus: rotate the coarse focus knob until the

specimen is about 3.175mm (1/8") away from the lens.

• Looking into the eyepiece, slowly turn the coarse focusing knob until you can see the image of the observed specimen. Turn

the ne focusing knob to make the image clear. The ne focusing mechanism allows you to focus on the observed specimen

while using high magnications.

• When you use an oil immersion objective, the space between the specimen and the lens should be lled with immersion oil.

Raise the condenser to the upper position and put a drop of oil on the lens and on the cover glass of the specimen. Move the

revolving nosepiece back and forth to get rid of air bubbles in the oil. Then, x the objective lens in its working position.

Make sure that oil lls the entire space between the objective lens and the specimen. After use, wipe the lens dry.

• To adjust the position of the mechanical scale (except for Levenhuk 400M), turn the coarse focusing knob in a clockwise

direction if you want to x the position of the mechanical scale, or in a counterclockwise direction if you want to loosen it.

• To place the specimen in the eld of view, move the stage horizontally back and forth or left and right using the stage

moving knob (except for Levenhuk 400M).

• Look through the right eyepiece with your right eye and adjust the image sharpness with the coarse and ne focusing knobs.

Binocular and trinocular models: then, look through the left eyepiece with your left eye and rotate the diopter adjustment

ring to equalize the dierence between your left and right eyes vision. Remember the setting for future use. Adjust the

distance between the eyepiece tubes of the binocular head so that the image merges into a single circle.

• Trinocular models: you can install the digital camera to the third eyepiece tube.

LCD screen (Levenhuk D407 LCD)

Getting started

• Connect the power cable to the power input on the LCD screen and connect it to the network. The red LED will light up.

Turn the LCD screen on with the power on/o button; the LED light will change to green.

• Insert the SD card (included) in the SD slot to view the image and save the resulting photos and videos.

Menu and functions

• Use the buttons on the back of the LCD screen to control the camera functions and parameters. After modifying the

parameters, exit the interface to save data.

• Press the Menu button to call up the menu. Use ↑↓ to select the functions. Use → to enter the submenu. Press the Menu

button once again to save the modied parameters and exit the interface.

Photo and video

• Photo. Press the Snap button on the LCD panel to take a photo. The image will be saved on the SD card.

• Video. Before recording a video, make sure that the SD card is formatted with the FAT32 le system and has enough free

space. You cannot take photos while recording a video. Enter the menu and select "Record Video" to record a video.

Levenhuk 400T 75421 Инструкция к товару онлайн [9/64] 851700

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