Caution:
If the power supply voltage is not fitted to the microscope, it will damage the
circuit and bulb, even leads to insecurity.
4. Focusing
：
Put the sample on the stage, and place a lower objective (4X) into position. Raise
the stage close to the sample by rotating the coarse focusing knob (21) in the
anticlockwise direction. Then rotate the coarse knob (21) slowly in the clockwise direction,
until the image appears in the eyepiece. At last, use the fine focusing knob (22) to make
the image
in focus. Rotate the nosepiece (3) to other objectives and focus. Since the
optical system in the microscope is par-focal and par-centered, only slightly turn the fine
focusing knob (22) to make the image in focus.
5. How to adjust the center of the Numerical Aperture:
Place the lower objective (4X) into position, and insert a eyepiece with crosshairs.
Turn the plate (10) to small the diameter of the diaphragm, and rotate the knob (23) to
move the diaphragm up or down until the diaphragm in focus. Adjust the black-head screw
(9) to concentre the image with the center of the eyepiece viewing field.
7. How to observe in orthogonal polarizing condition:
1) Make the analyzer is orthogonal with the polarizer. The analyzer is in south-north,
and the polarizer is in east-west.
2) The condenser is usually in lower position when 4X or 10X objectives is used; and
higher position when 40X , or 100X objective is used.
3) Select λ Slip (first class red)
，
or 1/4λ Slip,
E) Maintenance and Care of Microscope:
1. Unpack the microscope carefully to prevent the accessories such as lens from
falling down and damaging.
2. All lens are calibrated, don’t try to dismantle then apart by yourself.
3. Nosepiece and focusing system are advanced and precise in construction. Don’t try
to dismantle them apart by yourself. Please connect with an authorized technician when
they are in trouble.
4. Keep the mechanical parts from dust, and add a few no-corrosiveness lubricating
grease into the sliding sections at regular intervals. Keep the optical elements clean when
wipe the microscope.
5. Keep the microscope in dry and cool place. Disconnect it with the power source and
put the dust cover over it after using. If it will be not used for a longer time, it is the best
way to screw the objectives out and place them into the lens-bottles, and screw the dust
covers on the nosepiece.
P.6
