9
3. Adjustment and Operation
3.1 Adjusting binocular viewing head
3.1.1Adjusting interpupillary distance (Fig.10)
Different users have different interpupillary distances.
So when users change, do the interpupillary distance
adjustment.
While looking through the eyepieces, hold the left and
right of the binocular assembly
①
and adjust the eyepieces
by opening or closing them for binocular vision until the
left and right fields of view coincide completely.
3.1.2 Adjusting diopter ring (Fig.11
、
Fig.12)
1
．
Set the dioptor rings of both eyepieces to “0”position.
(Do this when users change, because different users
have different diopters.)
2
．
Place an easy-to-observe specimen on the stage plate.
3
．
Rotate the zoom body knob
③
to the highest
magnification 5
×
(or 6.4
×
,or 10
×
), and turn the
focusing knob
④
to focus the specimen.
4
．
Rotate the zoom body knob
③
to the lowest
magnification 0.8
×
, looking only into the left
eyepiece, adjust the diopter ring on left eyepiece to
focus the specimen. Then do the same thing for the
right one.
5
．
Repeat item 3 and 4 until the specimen image can
always focus without any adverse effect of the
changes of magnification on the definition of the
image.
Fig.11 shows the focusing part of Stereo
Microscope STM-850
、
STM-864;
Fig.12 shows the focusing part of Stereo
Microscope STM-880.There are coarse focusing
knob
⑥
and fine focusing knob
⑦
in this kind of
microscope.
●
The working distance of the objectives listed in
standard outfit is all 78mm for these three kinds of
stereo microscopes.
When 2
×
objective is chosen , it is necessary to
mount the binocular head bracket
⑤
onto the lower
position. Remove the clamping bolt with provided
hexagonal driver and move the bracket down to the
lower position and set it with original bolt (Fig.11).
Fig.10
①
Fig.12
⑦
⑥
Fig.11
⑤
④
②
③
