Adjusting The Zoom; Technical Data - Bresser DST-1028 Mode D'emploi

14 Adjusting the height of the head
Depending on the size of the observation object or when changing the magnification setting, the posi-
tion of the microscope head must be adjusted in height. To do this, proceed as follows.
1. Hold the microscope head and loosen the locking screw for the holder.
2. Turn the height adjustment wheel to move the microscope head up or down in the holder.
3. Hand-tighten the locking screw when the desired height position is reached.
NOTICE! Especially when changing the zoom range, it may be necessary to additionally change
the position of the digital microscope in the holder. (see also "Focusing the object")

15 Adjusting the zoom

The microscope optics have a zoom range from 10x to 280x.
The zoom range can be changed by turning the zoom ring. The corresponding digit on the scale must
be visible above the marking arrow.
NOTICE! When changing the zoom range, the focus may also need to be adjusted. (see also "Fo-
cusing the object")
16 Focusing the object
For optimal image sharpness, the observation object must be brought into the focus range of the di-
gital camera. To do this, proceed as follows:
1. Depending on the object height, assemble the extension piece if necessary.
2. Set the required head height for the digital microscope.
3. Make the desired magnification setting.
4. If necessary, correct the height and the position of the digital microscope in the holder slightly until
the image on the monitor appears sharp.
5. WARNING! Always hold the digital microscope firmly when loosening the locking screw or
the fixing screw on the holder to prevent the digital microscope from sliding down. The di-
gital microscope could hit the microscope base and be irreparably damaged!

17 Technical data

Zoom range:
Image field:
Working distance:
Max. object height:
Illumination:
Digital camera:
PC connection:
Power supply:
Materials
Objective lens:
Tripod
*Data transfer and power supply are carried out via the USB port on the PC at the same time
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10x to 280x
27 x 48mm (10x) or 0.9 x 1.7mm (280x)
10mm to 110mm
approx. 97mm (10x) to 160mm (280x)
8 LEDs
built-in
(Sony IMX335 CMOS sensor with 5.1 megapixels)
USB-A*
5V via USB connection*
glass, multi-coated
metal