Electric Led Lighting With Dimmer - Bresser BioDiscover DuoLux Mode D'emploi

All parts (Fig. A):
16x WF eyepiece
B
5x WF eyepiece
C
Barlow lens
d
Eyepiece barrel
E
Microscope head
F
LED lighting (direct light)
g
Focus knob
H
On/Off switch / dimmer
i
Power connection
j
Eyepiece holder
1)
Combined colour filter and
1!
diaphragm wheel
LED lighting (transmitted light)
1@
Microscope stage
1#
Specimen holder clamps
1$
Objective
1%
Nosepiece
1^
Fixing screw
1&
Important note:
These instructions include a fold-out page at the beginning
and end with numbered Fig.s. These make the instructions
easily comprehensible. All Fig. numbering with the prefix
letter A refer to Fig.s on the first foldout page. Fig.s with the
prefix letter B refer to those on the back foldout page.
1. General / siting
Before you begin assembling your microscope first select a suitable
position for it. Make sure it stands on a stable base free of vibration.
Use of the electric lighting predicates mains power connection (220-
230 V). (Use only the power connections supplied for safety reasons.
Other such parts may not comply with the applicable technical speci-
fications. We cannot accept any liability whatsoever for any damage
due to the use of third-party power connection parts/plugs/sockets.)

2. Electric LED lighting with dimmer

The microscope has two independently adjustable lighting units for
upper and lower lighting that can be controlled using the dimmer
wheel (Fig. A 8). The transmitted light unit is used for transparent
specimens on slides. To view solid non-transparent specimens use
the direct light unit. Simultaneous use of both direct and transmitted
light is only reasonable if the specimen is semi-transparent. This
operating mode is not recommended for transmitted light specimens
on slides as it may cause reflection on the slide.
3. Combined colour filter and
diaphragm wheel
Use this wheel (Fig. A 11), under the microscope table, to adjust obser-
vation quality for transparent specimens. The finer details are better
visible depending on colour and specimen. In direct light examination
of e.g. transparent specimens coloured underlighting combined with
white upper light may improve detail imaging. Depending on the
diaphragm opening used the appropriate light bundling can improve
focus, focus depth, contrast and detail resolution.
4. Microscope settings (transmitted light)
The microscope view (Fig. A 1-5) is now adjusted for the first observa-
tion. First undo the screw (Fig. A 17) and turn the eyepiece barrel (Fig.
A 4) until it reaches a position comfortable for you. You can now look
through the lens, always beginning at the lowest magnification. Move
the microscope stage (Fig. A 13) down using the focussing wheel (Fig.
A 7) and turn the lens nosepiece (Fig. A 16) to the lowest magnifica-
tion (4x). (The 4x objective is now positioned vertically downward.)
All parts (Fig. B):
MicroCut
1*
Tweezers
1(
Pipette
2)
Preparation needles
2!
Shrimp hatchery
2@
Yeast
2#
Gum media
2$
Sea salt
2%
Shrimp eggs
2^
Box of slides holders, covering
2&
glasses and permanent
specimens
Mains plug
2*
Cross table (optional)
2(
Fastening screw
3)
Longitudinal adjustment screw
3!
Crosswise adjustment screw
3@
Index of contents
1. General / siting
2. Electric LED lighting with dimmer
3. Combined colour filter and diaphragm wheel
4. Microscope settings (transmitted light)
5. Observation
6. Observation specimen -
characteristics and preparation
7. Microscope settings (direct light)
8. Experiments (transmitted light)
9. Optional accessories
10. Care and maintenance
11. Technical data
12. EEC conformity explanation
Warranty & Service
Insert the 5x eyepiece (Fig. A 2) into the Barlow lens (Fig. A 3). Make sure
the Barlow lens is wholly inserted in the eyepiece barrel (Fig. A 4) and
does not project.
Note
Before changing the objectives, always move the microscope
stage right down. This prevents possible damage.
5. Observation
Once you´ve set the microscope up with the right lighting and settings
the principles below apply. Start with simple observation at lowest
magnification. Centring and adjustment of the specimen is thus made
easier. The higher the magnification the more light is needed for
good observation quality. Place a slide with a permanent specimen
right under the objective on the microscope stage and secure it in
place with the clamps (Fig. A 14). Important: The specimen must be
precisely sited in the centre of the transmitted lighting. Look through
the eyepiece (Fig. A 1/2) and turn the focussing wheel (Fig. A 7)
carefully until you get it right. Use the dimmer wheel (Fig. A 8) to set
the brightness of the underlighting to view specimen details optimally.
You can then set higher magnification by slowly pulling the Barlow
lens (Fig. A 3) out of the eyepiece barrel (Fig. A 4). When nearly fully
extracted magnification is nearly doubled.
For even higher magnification use the 16x eyepiece (Fig. A 1) and
Important note.
then turn the nosepiece (Fig. A 16) to a higher setting (10x/40x).
Higher magnification need not necessarily lead to better
results. This depends on the specimen.
Please note.
If magnification is changed (eyepiece or objective change,
Barlow lens extraction) the focus must be re-adjusted using
the focussing wheel (Fig. A 7). Be very cautious when doing
this. If you turn the microscope stage up too fast you may
damage it and/or the slide.
6. Observation specimen - characteristics
and preparation
6.1 Condition
Both transparent and non-transparent specimens can be examined
with this microscope, which is a direct as well as transmitted
light model. If opaque specimens are examined - such as small
animals, plant parts, tissue, stone and so on - the light is reflected
from the specimen through the objective and eyepiece, where it
is magnified, to the eye (reflected light principle). If transparents
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