15
STEINDORFF
®
Centering the mirror reflected image (Fig.6)
★
The mirror reflected image has been centered
before leaving the factory. Do not adjust the
knob
⑦
please if not necessary. Only when the
burner has been centered precisely, can the
knob
⑦
be adjusted.
Note: once the knob is adjusted, the reflected
mirror cannot be reconverted to the status when
leaving the factory.
Knob control:
（
Fig.6
）：
1
．
The middle knob
⑥
is the mirror reflected
image focusing knob which can sharpen the
reflected image.
2
．
The knobs at both sides
⑦
can adjust the
up/down or left/right position of the mirror
reflected image.
3.1.7 Centering the Field Iris Diaphragm (fig 8,
9)
1.
Engage the 10×objective in the light path, and
place the specimen on the stage and bring into
approximate focus.
2. Pull the field iris diaphragm lever
②
out until the
diaphragm comes into the smallest state.
3. Use the hexangular wrench to adjust the two
field iris diaphragm centering screws alternately
to move the image of the diaphragm to the
center. (Fig.2 show the adjustment of
diaphragm)
4. Push in the field diaphragm lever to open the
diaphragm. As this makes slight deviation
noticeable, adjust the centering precisely.
5. Enlarge the diaphragm until it just circumscribes
the field of view.
Fig 8
②
①
③
④
Adjusting the field iris diaphragm
The field diaphragm adjusts the diameter of the illuminating
beam to obtain good image contrast.
Keeping the field diaphragm stopped down to the smallest
required area for each observation makes it possible to prevent
color fading of areas outside the observation target region.
According to the objective in use, adjust the diaphragm image
using the field diaphragm lever so that the field of view is
circumscribed by the field diaphragm to exclude stray light.
Fig 9
c
b
a
