22
Rotate the zoom adjustment knob to the lowest magnification and use the focusing knobs to bring
the specimen into focus. Next, rotate the zoom adjustment knob to the maximum magnification
and adjust the focusing knobs until a clear image is seen through the right eyepiece.
Adjust to the lowest magnification, again making sure the image seen through the right eyepiece
remains in focus throughout the process. If the image is not in focus, adjust the diopter ring on the
right observation tube until a clear image is seen (while making this adjustment, make sure not to
adjust the focusing knobs).
Adjust the diopter ring on the left tube until a clear image is seen throughout the change from
lowest magnification to highest. At this point the microscope should be completely parfocal at all
magnifications completing the diopter adjustment process.
7.3 Magnification and working distance
Rotate the zoom adjustment knob until the desired magnification is achieved. If necessary, the
eyepieces may be changed or an additional objective lens may be installed (see section on
additional objectives installation at the bottom of page 8).
The microscope’s total magnification = eyepiece magnification strength x magnification changer
magnification strength x additional objective lens magnification strength.
When there is no additional objective, its magnification value in the equation may be replaced
with
1.
The working distance can be changed from 110mm (when no additional objective has been
installed) to 38.6mm (when a 2X additional objective has been installed). Standard configuration
(no additional objective) has a working distance of 110mm.
7.4 Changing the bulb
The bulb and the lamphouse become very hot during and after a period of
operation.
Risk of burn – Do not touch the bulb during or immediately after a period of operation.
Make sure the bulb has cooled sufficiently before attempting to replace the lamp.
Before changing the bulb, do not forget to turn off the power and unplug the power cable from the
power
source.
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