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3
Operation
3.1 Adjusting illumination
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.
Caution:
A diffusion filter is attached beneath the condenser to get uniform light and protect
your eyes from strong light when a low power objective applied. The diffusion filter
can be swung out to make the view field brighter when observing with a high power
objective, such as 100X objective.
3.2 Placing specimen
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 Adjusting interpupillary distance
While observing with both eyes, hold the left and right eyepiece tubes then slide the
tubes in and out. The interpupillary distance is correct when the left and right fields of
view converge completely into one image.
3.4 Adjusting eyepiece diopter
1) Rotate the 10X objective into position.
2) Rotate the diopter rings on the eyepiece tubes
until its numerical value is the same as your
interpupillary distance, for example, 70 in the
figure (See
Fig. 7
).
3) Close your left eye and bring the specimen
into focus following the focusing procedures in
3.5
.
4) Close your right eye and bring the same
specimen into clear sharp focus by adjusting
the diopter ring on left eyepiece tube only. Do
not use focus knobs at this step.
5) Since both sides are adjustable, you may also
do the above in the opposite way, in other
words, left eye first and right eye second.
3.5 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.
Fig.7
70
