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7. Start-up
7.4 Adjusting the Light Sources
Centering is only required when using the 106z*
lamp housing.
• When a supply unit is used, it is turned on first
Caution!
Never look directly into the beam path!
Caution!
Light sources pose a potential irradiation
risk (glare, UV-radiation, IR-radiation).
For the 106z lamp housing, the direct arc image (for
gas discharge lamps) and its mirror image are
focused separately and adjusted to each other.
• Move the filter system* or reflector* into the
light path
• Open the shutter and remove any diffusing
screens* from the light path
Fig. 30 106z lamp housing
1 Lamp height adjustment
2,4 Mirror image height and side adjustment
3 Focusing the reflector
5 Lamp side adjustment
6 Collector (focusing of the lamp image)
2
3
4
516
• Put a piece of paper on the specimen stage
and roughly focus the surface with a dry
objective of low to medium magnification
• Set the field and aperture diaphragms roughly
at the center position
• With a felt or ballpoint pen, make a marking at
any position on the paper and slide it into the
small illuminated field
• Turn a vacant nosepiece position into the light
path or remove the objective
The light source will then be imaged onto the
paper. While observing the light source, the
lamp is adjusted as follows.