18
IX81
Fig. 14
Fig. 15
Fig. 16
Fig. 17
4-4 Observation Tube
1
Adjusting the Interpupillary Distance
(Fig. 14)
While looking through the eyepieces, adjust the binocular vision until the
left and right fields of view coincide completely. The index dot · indicates
the interpupillary distance.
}Note your interpupillary distance so that it can be quickly duplicated.
2
Adjusting the Diopter
(Figs. 15 & 16)
}The diopter adjustment accuracy can be improved by using an objective
with as high power as possible.
1. While looking through the right eyepiece, rotate the diopter adjustment
ring
1
on the right eyepiece sleeve until the peripheral area of the field of
view is clearly visible. (Fig. 15)
}The diopter can also be adjusted using the eyepiece micrometer disks.
2. While looking through the right eyepiece, rotate the focusing knob to
bring the specimen into focus.
3. Look through the left eyepiece and rotate only the diopter adjustment
ring
2
on the left eyepiece to bring the specimen into focus. (Fig. 15)
# When rotating the diopter adjustment ring of an eyepiece, hold the
lower part of the eyepiece with the other hand.
Operation When Using Finder Eyepieces (with the U-TR30H-2)
}The finder eyepieces cannot be mounted to the eyepiece sleeves of a
binocular observation tube.
1. Looking through the left eyepiece with your left eye, rotate the top of the
eyepiece
2
until a clearly defined double crosslines can be seen in the
field of view. (Figs. 15 & 16)
2. Looking through the left eyepiece, adjust the focusing knob to bring the
specimen and double crosslines into simultaneous focus.
3. Looking through the right eyepiece with your right eye, rotate only the
diopter adjustment ring
1
to bring the specimen into focus.
3
Using the Eye Shades
(Fig. 17)
When Wearing Eyeglasses
Use with the eye shades in the normal, folded-down position. This will
prevent the eyeglasses from being scratched.
When Not Wearing Eyeglasses
Extend the folded eye shades in the direction of the arrow to prevent
extraneous light from entering between the eyepieces and eyes.
1
2
