Categories: levenhuk

levenhuk 76826 Rainbow DM LCD Digital Microscopes User Manual

levenhuk 76826 Rainbow DM LCD Digital Microscopes


  1. LCD screen
  2. Objective
  3. Brightness adjustment knob
  4. Coarse focusing knob
  5. Optical zoom ring
  6. Pole
  7. Upper illumination
  8. LCD screen locking screw (not shown)
  9. Power connector (not shown)
  10. Stage
  11. Movable block with specimen holders
  12. Lower illumination


  1. Power on/off
  2. Menu
  3. Up
  4. Down
  5. OK
  6. Capture
  7. Infrared sensor
  8. Brightness adjustment wheel
  9. SD slot
  10. MicroUSB: output to PC
  11. Reset


  1. Capture
  2. Menu
  3. Frozen
  4. Mode
  5. Zoom up
  6. Brightness down
  7. Brightness up
  8. OK
  9. Zoom down
  10. 50/60Hz
  11. Crossline
  12. Sharpness down
  13. Contrast down
  14. Inverse
  15. Sharpness up
  16. Contrast up
  17. Black&white
  18. Lock/unlock file
  19. NTL/PAL
  20. Default set
  21. Image rotate


  1. DC adapter
  2. Switch cable
  3. Lens covers
  4. 12 prepared slides
  5. Black, white and uniform light plates

Getting started

Please refer to fig. 1 (device), 2 (LCD screen), 3 (control panel), and 4 (accessories). Find your microscope model and view all of the details of the device

  • Unpack the microscope carefully and place it on a flat surface.
  • Plug the power cable into the corresponding connectors on the base and on the LCD screen, and then the backlight and screen will turn on automatically.
  • press and hold the “Power on/off” button for 2 seconds on the screen to turn the screen on and off.
  • Place the micropreparation on the movable block and fix it with the specimen holders. Place the movable block under the objective. The kit includes a set of ready-made micropreparations for study. Remove the lens cover labeled “Q.C. passed” from the bottom of the second lens cover.
  • Adjust the brightness of the backlight and adjust the clarity of the image with the coarse focusing knob.

A microSD card (purchased separately) is required to save captured images and recorded videos. Turn the microscope off and insert the microSD card into the corresponding slot on the microscope body until it locks in place with a click. Do not apply excessive force when inserting the microSD card. Try rotating the card, if it does not lock in place with ease.
If the LCD screen freezes, look for the “Reset” button on the back of the LCD screen. Use a narrow object, such as a straightened paperclip, to press the button. This will reset all of the settings to the factory defaults and restart the LCD screen. Saved photos or videos will not be deleted.

Stage inset glass

  • Frosted glass stage inset may be used for observations of transparent specimens or thin slices of objects. Place it on the stage and secure it in place with the locking screw. Lower illumination source should be used during observations with this glass stage inset.
  • Additional black and white glass slides are supplied with the microscope. If the specimen is white or bright, then for better image contrast, use a black glass slide with only the top illumination on. Otherwise, use a white glass slide.

Caution: Please refer to the specifications table for the correct mains voltage and never attempt to plug a 110V device into 220V outlet and vice versa without using a converter. Remember that mains voltage in the U.S. and Canada is 110V and 220—240V in most European countries.

Display information

  • Video mode
  • Photo mode
  • Playback mode

Digital magnification
During observations, press the “Up” button to enlarge the image and the “Down” button to reduce the image.

Capturing an image

  1. Turn the microscope on and place a specimen on the stage.
  2. Set the objective to the desired height using the coarse focusing knob.
  3. Adjust the illumination brightness, so that the specimen is evenly lit.
  4. Adjust the magnification and sharpness of the image by rotating the coarse focus knob and optical zoom ring.
  5. To take a photo, press the “Capture” button.
  6. In “Freeze” mode, briefly press the “OK” button to take a picture (DM500 only).

Recording a video

  1. Press the “Video” button to switch to video mode. The icon in the upper left corner of the screen will change in confirmation.
  2. Press the “OK” button to start recording. Note: do not hold down the “OK” button; instead, briefly press and release it.
  3. Press the “OK” button again to stop recording.
  4. Press the “Capture” button to take a picture while the microscope is recording a video. If you take a photo this way, the image resolution may not be as high as the video resolution — the image quality will be lower.

View photos and videos

  1. Insert the microSD card into the SD slot.
  2. Press the “Video” button twice to turn on the viewing mode.
  3. Press the “Right” and “Left” buttons to view the pictures and videos. Press the “OK” button to start playing the video.
  4. Use the “Menu” button to provide additional options when viewing a still image or video. Press and hold the “Menu” button until the options appear.

Press the “Menu” button to go to the settings menu of the LCD screen Use the control buttons to select the required parameters. Press the “Menu” button again to save the selected parameters. Do not turn off the power of the microscope while saving the settings. Reboot the microscope after applying the settings.

Date and time
Select Date/Time from the main menu by the “Down” button and set the current date and time. You can use the “Left” and “Right” buttons on the remote control to select the required data.


Product ID 76826 76825


Levenhuk Rainbow DM500 LCD Levenhuk Rainbow DM700 LCD
Digital magnification 7—200x 10—200х
Optical magnification 7—50х 10—50х
Optics material optical glass
Body plastic
Stage 120х180mm
Movable block 83х43mm, with specimen holders
Focus coarse, 50mm coarse, 90mm
Illumination upper and lower, LED
Rotatable color LCD screen 5″ 7″
Megapixels (sensor/image) 2/12
Max. resolution (image/video) 4032x3024px/1920x1080px
Image/video format *.jpg/*.avi
Sensor 1/2,9
Pixel size 2,8μm
Sensitivity 3800mV/Lux·s
Spectral range 410—1100nm
Manual settings white balance, exposure control
Output (connectors) microSD, microUSB


Power supply (microscope)

110—220V; 5V, 1A via USB

cable; built-in 2200 mAh battery (working time: 3—4 hours, charging time: 16—20 hours)

110—220V; 5V, 1A via USB


Power supply (IR remote) 2pcs AAA batteries
Operating temperature range –20…+70°C (–4 to 158°F)

Care and maintenance

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. Take necessary precautions when using the device with children or others who have not read or who do not fully understand these instructions. After unpacking your microscope and before using it for the first time check for integrity and durability of every component and connection. 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. Protect the device from sudden impact and excessive mechanical force. Do not apply excessive pressure when adjusting focus. Do not overtighten the locking screws. 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. Abrasive particles, such as sand, should not be wiped off lenses, but instead blown off or brushed away with a soft brush. 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. Be careful during your observations, always replace the dust cover after you are finished with observations to protect the device from dust and stains. If you are not using your microscope for extended periods of time, store the objective lenses and eyepieces separately from the microscope. Store the device in a dry, cool place away from hazardous acids and other chemicals, away from heaters, open fire and other sources of high temperatures. When using the microscope, try not to use it near flammable materials or substances (benzene, paper, cardboard, plastic, etc.), as the base may heat up during use, and might become a fire hazard. Always unplug the microscope from a power source before opening the base or changing the illumination lamp. Regardless of the lamp type (halogen or incandescent), give it some time to cool down before trying to change it, and always change it to a lamp of the same type. Always use the power supply with the proper voltage, i.e. indicated in the specifications of your new microscope. Plugging the instrument into a different power outlet may damage the electric circuitry of the microscope, burn out the lamp, or even cause a short circuit. Children should use the device under adult supervision only. Seek medical advice immediately if a small part or a battery is swallowed.

Battery safety instructions

Always purchase the correct size and grade of battery most suitable for the intended use. Always replace the whole set of batteries at one time; taking care not to mix old and new ones or batteries of different types. Clean the battery contacts and also those of the device prior to battery installation. Make sure the batteries are installed correctly with regard to polarity (+ and –). Remove batteries from equipment that is not to be used for an extended period of time. Remove used batteries promptly. Never short-circuit batteries as this may lead to high temperatures, leakage, or explosion. Never heat batteries in order to revive them. Do not disassemble batteries. Remember to switch off devices after use. Keep batteries out of the reach of children, to avoid risk of ingestion, suffocation, or poisoning. Utilize used batteries as prescribed by your country’s laws.

Levenhuk International Lifetime Warranty

All Levenhuk telescopes, microscopes, binoculars and other optical products, except for accessories, carry a lifetime warranty against defects in materials and workmanship. Lifetime warranty is a guarantee on the lifetime of the product on the market. All Levenhuk accessories are warranted to be free of defects in materials and workmanship for six months from date of retail purchase. Levenhuk will repair or replace such product or part thereof which, upon inspection by Levenhuk, is found to be defective in materials or workmanship. As a condition to the obligation of Levenhuk to repair or replace such product, the product must be returned to Levenhuk together with proof of purchase satisfactory to Levenhuk.
For further details, please visit our web site:
If warranty problems arise, or if you need assistance in using your product, contact the local Levenhuk branch.

Documents / Resources

levenhuk 76826 Rainbow DM LCD Digital Microscopes [pdf] User Manual
76826, Rainbow DM LCD Digital Microscopes



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