Adjustment And Operation; Adjusting Binocular Viewing Head - Unitron System 374 Manual

ADJUSTMENT AND OPERATION

Adjusting Binocular Viewing Head

②
UNITRON ®
Fig. 6
③
④
Fig. 7
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SYSTEM 374 STEREO MICROSCOPES
Adjusting Interpupillary Distance (Fig. 6)
Different users have different interpupillary
distances (this distance is between the centers
of the pupils of each eye). When the operator of
the microscope changes, it will be necessary to
adjust the interpupillary distance.
While looking through the eyepieces, hold the
left and right eyetubes of the viewing head and
adjust the eyetubes by opening or closing them
until the left and right fields of view coincide
completely and you are able to see a complete
circle.
Adjusting Diopter Ring/Focusing (Fig. 7)
Set the diopter rings ② of both eyepieces to "0"
position. (Do this when users change, because
different users will have different diopter
settings.)
Place an easy-to-observe specimen on the
stage plate, i.e., a coin.
Rotate the zoom knob ③ to the highest
magnification, and turn the focusing knob ④ to
focus the specimen.
Rotate the zoom knob ③ to the lowest
magnification, looking only into the left eyepiece,
adjust the diopter ring on left eyepiece to focus
the specimen. Then repeat this procedure for
the right eyepiece.
NOTE: The working distance (the distance
between the microscope objective to the top of
the specimen) of the microscope is 186mm (with
0.5X objective, included).
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