Zeiss Axiovert 200, Руководство по эксплуатации

Страница: 70 / 120

OPERATION
Carl Zeiss Axiovert 200 Axiovert 200
3-10 B 40-080 e 03/01
Condensers (3-1/ 23 )
Depending on their type, condensers (3-7/ 1 ) are
equipped as follows:
−
5- or 6-position turret for:
brightfield: H
phase contrast: Ph0, Ph1, Ph2, Ph3 with
centerable stops
interference contrast: DIC
Varel contrast: Var1, Var2
−
Aperture diaphragm (iris stop). Use knurled
knob (3-7/
2 ) to open and close the aperture
diaphragm.
−
Turn the turret wheel (3-7/ 4 ) to swing the
brightfield insert or the contrast stops into the
beam path.
−
The brief description of the set turret position
(e.g.
H ) is displayed to the user at the front.
−
Condensers for Varel contrast are equipped
with a knurled knob (3-7/
3 ) which allows the
position of the Varel stop to be changed when
the Varel turret position has been set. The lever
(3-7/
5 ) permits switching between Var1 and
Var2.
−
The condensers 0.35 and 0.55 for phase
contrast require the use of one SW 1.5 Allen
screwdriver each (plugged in at 3-8/
1 ) to center
the phase stops.
☞
The condenser turrets feature the so-called automatic diaphragm mechanism, i.e. the aperture
diaphragm (iris stop) is opened completely when a phase stop position is switched on. When a
new turret position is switched on, the aperture diaphragm is automatically reset to its last
opening.
Fig. 3-7 LD condenser 0.55, 6-position,
H, Ph1, Ph2, Ph3, Var1/2
Fig. 3-8 LD condenser 0.35, 6-position,
H, Ph0, Ph1, Ph2, DIC, DIC