B 46-0008 e 12/06
3
www.zeiss.de/stemi
Adjusting the illumination
Reflected-light illumination:
•
Connect the light guide for reflected-light to the cold-light source
(RL) and attach it to the stand plate or nosepiece (or carrier S).
Alternatively clamp the ring illuminator to the single objective (not
to the nosepiece).
•
Switch on the cold-light source for reflected-light (RL) with rocker
switch
I
.
•
Align the light guide on to the specimen.
•
Adjust the illumination intensity on the cold-light source or use
the two right hand buttons on S Y C O P .
Transmitted-light illumination with transmitted-light unit S:
•
Connect the light guide for transmitted-light (TL) to the cold-light
source.
•
For lower magnifications, insert the opal glass.
•
To avoid dazzle from transmitted-light, swing the dazzle protector
into position.
•
Switch on the cold-light source for transmitted-light (TL) with
rocker switch
I
.
•
Adjust the illumination intensity on the cold-light source or use
the two left hand buttons on S Y C O P .
•
The illumination levers on the transmitted-light unit allow the
brightfield / darkfield to be adjusted as depicted alongside. To
optimise the contrast with oblique light various intermediate
positions can be employed (see explanation of symbols).
Symbols for illumination control
Light beam exits vertically (reflector at 45° inclination)
Inclining
the light beam towards the observer (dazzle hazard!)
Inclining
the light beam away from the observer
Light beam exits centrally
Translation
of the light beam towards the observer
Diffuse
light quality
with the white reflector plate
Directed
light quality
with the mirror reflector plate
Adjusting the stereomicroscope
The stereomicroscope should be connected and switched on.
Focus and zoom can be controlled using H I P or S Y C O P . See section
•
Place a specimen on the insert plate (
3
).
•
If the dioptric eye values are known, set the eyepieces (
2
)
accordingly.
•
Select the viewing height by twisting the eyepiece support (
1
) by
up to max. 120° and adjust it to the pitch of individual eyes, i. e.
when looking in the eyepieces only an uninterrupted circle of light
should be seen.
•
Tilt the binocular part viewing angle and set it within the range
5° - 45°.
•
Open the aperture diaphragm using thumb wheel (
4
).
•
When searching for objects, first set the zoom (
5
) to the lowest
magnification.
•
Focus on a small sharp detail in the centre of the image (
6
).
•
Set the maximum zoom value (
5
) and adjust for exact focus on the
detail (
6
).
•
Then go back to the lowest zoom value (
5
) and correct any out-of-
focus separately for each eye, using the adjustable eyepieces (
2
)
(compensation for variations in the eye).
Once the microscope has been compensated in this way, image focus
will be retained over the entire zoom range.
At the camera outlet of the Ergo phototube (
8
) a camera can be
attached by a suitable adapter if desired. To change between visual
observation and documentation, swing over the lever (
7
). The right
hand beam path is switched over completely.
