Olympus EHT-423-SW Інструкція з експлуатації - Сторінка 10
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Друкувати сторінкуLever
Position
H
L
Fo,
Photomicrography
4x
lOx
Observ.
20x-l00x
Objective
For
Observation
3.
Microscope Base and· Light Source
1 )
Microscope Base
The lamp house is built onto the base. The lamp socket is clamped to
the lamp house with a damping screw. The tight path is selected with
the auxiliary lens shifting lever for high, medium and low magnification
of objective in use.
..._ _..
It is generally recommended to set the lever to the position marked with
"Observ." (equivalent to position
L)
for brightfield observation with
all the objectives from
4x
through 100x. In phase contrast or darkfield
observation, where in tenser light is required, however, it is recommended
to set it to position M or H according to objective magnification as in
case with photomicrography.
Voltage
Adjustment Knob
Grounding terminal
..::::::;::;",::::~--
Line Voltage
Adjustment
Screw
o Voltage Adjustment
The minimum voltage required for the light source can be varied
qv
means of the line voltage adjustment screw provided at the back of the
microscope base in accordance with the line voltage and frequency,
since a silicon controlled rectifier (SeRl is .adopted in the dimmer
circuitry.
At the bottom of the base is a voltage selector switch, which can be
turned with a coin, to correspond with the voltage of main supply
(11 OV, 120V, 220V or 240Vl. The transformer is built in the base and
switched on and off with the voltage adjustment knob, which also
controls the bulb voltage from 0 to lOV.
8