Bresser DST-1028, Instruction Manual

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14 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")

15 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!

16 Technical data

Zoom range:

10x to 280x

Image field:

27 x 48mm (10x) or 0.9 x 1.7mm (280x)

Working distance:

10mm to 110mm

Max. object height:

approx. 97mm (10x) to 160mm (280x)

Illumination:

8 LEDs

Digital camera:

built-in 
(Sony IMX335 CMOS sensor with 5.1 megapixels)

PC connection:

USB-A*

Power supply:

5V via USB connection*

Materials

Objective lens:

glass, multi-coated

Tripod

metal

*Data transfer and power supply are carried out via the USB port on the PC at the same time

17 EC declaration of conformity

A "Declaration of conformity" in accordance with the applicable directives and correspond-
ing standards has been prepared by Bresser GmbH. The full text of the EC declaration of
conformity is available at the following Internet address: www.bresser.de/down-
load/5808600/CE/5808600_CE.pdf