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}For centering of the xenon burner, use the same procedure as the mercury burner.
}Set the main switch to “ ” (ON) and wait until the arc image stabilizes
(for 5 to 10 minutes after ignition) before proceeding to the centering.
1. Set the shutter knob @ to “{” to close the shutter.
2. Set the mirror unit turret to “TBF”, place a sheet of white paper on the
specimen surface, focus on the white sheet and set a low zoom ratio.
3. Engage the fluorescence mirror unit in the light path.
The fluorescence illumination may contain wavelengths harmful to
your eyes. The specimen must always be observed through the UV
shield plate.
4. Remove the objective.
5. Pull out the field iris diaphragm lever ² (to stop down the diaphragm).
6. Rotate the aperture iris diaphragm knob ³ toward the left (to open the
diaphragm).
7. Set the shutter knob @ to “¦” to open the shutter.
8. Rotate the collector lens focusing knob | to project the arc image on
the white sheet. (A)
9. Rotate the burner centering knobs ƒ to bring the arc image on the
center of the left (or right) half of the field. (B)
Fig. 47
@
²
³
|
11-3 Centration of the Mercury (Xenon) Burner and Field Iris Diaphragm
ƒ
1
Centering the Mercury Burner
(Figs. 47 & 48)
10. Insert the Allen screwdriver into the mirror focusing screw hole (… in
Fig. 48) on the rear of the lamp housing, and turn the screw to focus
on the mirror-reflected image. (C)
11. Rotate the burner centering knob ƒ until the arc image and mirror-
reflected image overlap.
}After starting observation, rotate the collector lens focusing knob | as
required to render the observation field uniform.
}The mercury burner needs not be centered again until the time it is
replaced.
A
B
C
D
Содержание MVX10
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