Adjusting The Zoom - Bresser DST-0745 Bedienungsanleitung

3. Adjust the brightness of the illumination by pressing the respective illumination button several
times. The brightness function lights indicate the brightness level (1 = lowest level, 5 = highest
level, 0 = lighting off) for the respective lighting type.
NOTICE! The setting for the brightness level is retained even after the power supply is discon-
nected.
4. Bend the flexible arms of the incident light illuminator so that optimum illumination for the observa-
tion object is provided.
13 Adjusting the height of the head
Depending on the object size, it may be necessary to adjust the height of the microscope head. To do
so, proceed as follows:
1. Loosen the lock ring and slide it down completely.
2. Hold the microscope head and loosen its locking screw.
3. Adjust the height of the head individually and tighten the locking screw.
4. Push the counter ring upwards under the microscope head and screw it tight.
NOTICE! The counter ring must always be fixed exactly below the microscope head.

14 Adjusting the zoom

The microscope optics have a zoom range from 0.7x to 4.5x.
The zoom range can be changed by turning the zoom ring.
NOTICE! When changing the zoom range, the focus may also need to be adjusted. (see also "Fo-
cusing the object")
15 Focusing the object
The microscope has coarse and fine focusing. These can be used for object focusing as described be-
low.
1. Make the desired zoom setting.
2. Focus on the observation object using coarse focusing.
3. If necessary, adjust the object sharpness individually by fine focusing, especially when changing
the zoom setting and/or the height of the microscope head.
16 Adjusting the friction
Illustration 2: Friction adjustment on the focus wheel
F1 Focus wheel
F1 F2
F2 Bore
9 / 20