User Manual

Digital Compound

Binocular LED Microscope

Model MD8211E30

MicroscopeNet.com

 

Table of Contents

i. Caution...................................................................................................... 1

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i.

Caution

1. Open the carton carefully with a knife or paper cutter. Find the “UP” sign and place the Styrofoam container on the side that makes the arrow upward. If the “UP” sign is missing, please open the Styrofoam container gently to prevent any accessory items (i.e. objectives or eyepieces) from dropping and being damaged.

2. Do not discard the molded Styrofoam container. The container should be retained should the microscope ever requires reshipment.

3. Keep the instrument out of direct sunlight, high temperature or humidity, and dusty environments. Ensure that the microscope is located on a smooth, level and firm surface.

4. If any specimen solutions or other liquids splash onto the stage, objective or any other component, disconnect the power cord immediately and wipe up the spillage.

Otherwise, the instrument may be damaged.

5. All electrical connectors (power cord) should be inserted into an electrical surge suppressor to prevent damage due to voltage fluctuations.

6. For safety when replacing the LED light and the fuse, be sure the main switch is off, unplug the power cord, and replace the LED light and the fuse

7. Confirm that the input voltage indicated on your microscope corresponds to your line voltage. The use of a different input voltage other than that as indicated will cause severe damage to the microscope.

8. Note: please read the instruction of the operation of camera in manual 3.9

below and the CD in the package before you start to use it.

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ii.

Care and Maintenance

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1. Do not attempt to disassemble any component including eyepieces, objectives or focusing assembly.

2. Keep the instrument clean; remove dirt and debris regularly. Accumulated dirt on metal surfaces should be cleaned with a damp cloth. More persistent dirt should be removed using a mild soap solution. Do not use organic solvents for cleansing .

3. The outer surface of the optics should be inspected and cleaned periodically using an air stream from an air bulb. If dirt remains on the optical surface, use a soft cloth or cotton swab dampened with a lens cleaning solution (available at camera stores).

All optical lenses should be swabbed using a circular motion. A small amount of absorbent cotton wound on the end of a tapered stick makes a useful tool for cleaning recessed optical surfaces. Avoid using an excessive amount of solvents as this may cause problems with optical coatings or cemented optics or the flowing solvent may pick up grease making cleaning more difficult.

4. Store the instrument in a cool, dry environment. Cover the microscope with the dust cover when not in use.

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1.

Components Illustration

1

2

3

4

5

6

7

8

9

19

20

1 Eyepiece

2 Diopter Ring

8 Light Collector

9 Microscope Base

3 Eyepiece Tube 10 USB Cable

4 Viewing Head w Built-in Camera 11 Head Lock Thumb Screw

5 Objective 12 Nosepiece

6 Slide Holder 13 Microscope Body www.microscopenet.com

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11

12

13

14

15

16

17

18

21

15 Fine Focus Knob

16 X-Y Stage Moving Knobs

17 Power Switch

18 Brightness Intensity Dial

19 Condenser Lock Thumb Screw

20 Condenser Focus Knob

21 Condenser

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2.

Installation

2.1 Installation of the digital binocular viewing head

1) Loosen the head lock thumb screw on the top of the microscope body and remove the plastic cover on the top.

2) Remove the cap on the dovetail of the digital binocular viewing head.

3) Seat the dovetail of the viewing head into the socket on the top of the microscope body and tighten the head lock thumb screw.

Caution :

Do not release the viewing head from your hand grip until you are sure the viewing head is installed securely.

2.2 Installation of the eyepieces

1) Remove the protective caps from the eyepiece tubes.

2) Insert the eyepieces into the eyepiece tubes.

2.3 Installation of the objectives

1) Adjust the coarse focus knob until the mechanical stage is at its lowest position.

2) Turn the caps counter-clockwise to remove them from the nosepiece.

3) Take the objectives out from the plastic cases and turn each one clock-wise into the holes on the nosepiece. Install the 4X objective into the nosepiece first. Then in a counter-clockwise direction, rotate the nosepiece and install each succeeding higher magnification objective.

Note:



Inspect the objectives frequently for dirt or oil; clean if necessary.



Use the 10X objective to initially focus the image of your specimen.



When changing the objective magnification, rotate the objective nosepiece until you hear a “click” sound or have a clear "in position" feeling. This ensures the objective is centered in the optical light path.

1) Turn off the power switch and disconnect the power cord.

2) Find the fuse holder at the rear bottom of the microscope body.

3) Pry out the fuse holder gently with a flat head screwdriver.

4) Replace the old fuse with a new one, and then insert it back in. See Fig. 1 .

Fuse Holder

Fig.1

Fuses

2.5 Installation of the glass filter

1) Swing out the color filter holder under the condenser.

2) Place the filter into the color filter holder as shown in Fig. 2 , swing the holder in.

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Color Filter

Color Filter Holder

Fig.2

1) Turn off the power switch and disconnect the power cord.

2) Loosen the 7 screws on the bottom board. See Fig 3 (a)

3) Open the board and find the LED lamp. See Fig 3 (b)

4) Loosen the 2 screws and unplug the LED connector.

5) Replace the dead LED lamp with a new one.

6) Tighten the 2 screws and plug in the LED connector.

7) Put the board back its place.

8) Tighten the 7 screws.

(a)

7 Screws

Fig.3

(b)

(c)

5

LED Lamp

2 Screws

LED Connector

3.

Operation

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1) Plug the power cord into the power socket on the microscope and connect it to the power outlet.

2) Turn on the power switch.

3) Rotate the brightness intensity dial to increase or decrease the brightness of the illuminator.

Caution:

A diffusion filter is attached beneath the condenser to get uniform light and protect your eyes from strong LED light when a low power objective applies. The diffusion filter can be swung out to make the view field brighter when observing with a high power objective, such as 100X objective.

1) Place the slide on the mechanical stage.

2) Use the slide holder to gently secure the slide.

3) Turn the X and Y stage moving knobs to position the specimen in the center of viewing field.

Caution:

Be sure not to allow an objective to touch a specimen slide when changing objectives.

3.3 Focusing

1) With the 10X objective in position, raise the mechanical stage using the coarse focus knob until the specimen is close to the objective.

2) Turn the coarse focus knob until the specimen is in focus. Then use the fine focus knob to obtain a sharp image. You may now switch to another magnification objective.

3) To get a good focused image, you may need to combine the focus knob adjustment and interpupillary

Focus Stop distance adjustment, along with eyepiece diopter adjustment stated in 3.4

and 3.5

.

Fig.3

Tips:

T o prevent your specimen slide from making contact with an objective, turn the 40X objective in position and adjust the thumb screw of focus stop (as shown in Fig. 3 ) so that the 40X objective will not contact the specimen while the stage is adjusted to its highest position. Give the stage a tiny extra moving space to ensure the objective can be focused every time.

While observing with both eyes, hold the left and right eyepiece tubes then swing them around the center axis. The interpupillary distance is correct when the left and right fields of view converge completely into one image.

1) Using the 10x objective and your right eye only, observe your specimen through the eyepiece and bring it into focus by adjusting the focus knobs.

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2) Then observe the specimen with your left eye only through the left eyepiece. If the specimen is not in focus, turn the diopter ring on the eyepiece tube until a sharp image is obtained.

1) Turn the condenser focus knob to raise or lower the condenser.

2) The condenser is raised when using high magnification objectives and lowered when using low magnification objectives.

Note:



The centering of the condenser and the light axis of the objective are factory adjusted. Do not attempt to re-adjust.



The highest position of the condenser has been factory adjusted. Do not attempt to re-adjust.

Swing the iris diaphragm lever ( Fig. 4 ) left or right to adjust the aperture size.

Note:

The iris diaphragm is designed to adjust the aperture size, not to adjust the brightness although the brightness will be changed when it's adjusted. When aperture is adjusted to smaller size, the contrast will be increased and the depth of field will be increased as well. Turn up the intensity of the light if the image is too dim.

Iris Diaphragm Lever

Fig.4

3.8 Adjusting focus knob tension

The tightness of the focus knob tension has been pre-set at the factory. If the mechanical stage drops by itself, rotate the tension adjustment ring ( Fig. 5 ) located inside the focus knob on the power switch side until the tension is in maintained.

Tension adjustment Ring

3.9 Photo/video observing, capturing and recording

1) Insert the USB cable into the USB port ( Fig. 6 ) on the back of the viewing head, and the other end to the computer.

2) Turn on the computer, install the camera following the manual in the mini CD.

3) Bring the microscope into focus by following the procedures in 3.3

.

4) Open image observing software to examine.

5) You also can capture images or record live videos through the software, depending on the functions provided by the software.

Fig.5

USB Port

Note:

Fig.6

For the details of installation and operation of the camera and its software, please refer to the manual in the mini CD.

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4.

Specifications

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Model MD8211E30

Total Magnification 40X, 100X, 200X, 400X

Viewing Head

30º inclined, 360º swiveling siedentopf binocular viewing head with built-in 3.0MP camera

Hinge adjustment, 48mm - 75mm

Interpupillary Distance

Diopter Adjustment

Eyepieces

Objective Tube Length

On left eyepiece tube

1 pair of WF10X/18

160mm

Objectives

Condenser

Focus Mechanism

Stage

Illumination

Camera

Power Supply

Dimension

Net weight

Achromatic DIN 4X/0.10 160/0.17

10X/0.25 160/0.17

20X/0.40 160/0.17 (spring)

40X/0.65 160/0.17 (spring)

Abbe, NA=1.25, w/ iris aperture diaphragm and filter holder

Rack and pinion focus adjustment

Coaxial coarse and fine focusing knobs on both sides w/ stop

Double layer mechanical stage

Dimension: 5-1/2” x 4-5/16” (140mm x 110mm)

Translation range: 3” x 1-5/8” (78mm x 40mm)

Transmitted: 3W LED, variable intensity

Built-in USB2.0 2048 x 1536 pixel (3.0MP)

Driver and Software included in the CD

Compatible w/ Windows 2000/XP/Vista/Windows7 (32/64-bit)

AC 100-240V 50/60Hz (US and Canada plug)

12” x 8” x 15” (31cm x 20cm x 39cm)

11 lb 14.5 oz (5.4 kg)

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5.

Troubleshooting Guide

Problem

GENERAL PROBLEMS

Cause

No electrical power www.microscopenet.com

Solution

Check power cord connection

Lamp does not light when switched on

LED or power unit dead Replace LED light

Fuse blown out Replace fuse

Darkness at the periphery or uneven brightness in the field of view

Revolving nosepiece not in click stop position

Dirt or dust on the view

Dirt or dust on the eyepiece, condenser, objective, collector lens or specimen

Clean the lens with a lens cleaning paper

No slide cover attached to the slide Attach a 0.17mm slide cover

Slide cover is too thick or thin

Slide may be upside down

(specimen at the bottom)

Diopter adjustment is not set properly

Revolve the nosepiece to click-stop position by swinging the objective correctly into the optical path

Use a slide cover of the appropriate thickness (0.17mm)

Turn slide over so the cover-glass faces up

Readjust the diopter settings

Poor image quality or not able to get focused image

Condenser aperture is closed or open too much

Condenser is positioned too low

Open or close properly

Position the condenser upward

Specimen rises from stage surface Secure the specimen in the slide holder

Revolving nosepiece is not in the click-stop position

Slippage of focus when using the coarse focusing knob Fine focus is ineffective

Lamp intensity is too high or low

Tension adjustment is set too low

Tension adjustment is set too high

Revolve the nosepiece to the click-stop position

Adjust the light intensity by rotating the intensity control dial

Increase the tension on the focusing knobs

Loosen the tension on the focusing knobs

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