Leica DMLS Bedienungsanleitung Seite 50

You may have to rotate the tube on the
microscope by about 180° to allow light to
impinge unobstructed on the mirror. Align the
microscope and the mirror so that light from a
large area, e. g. sky or a pane of opal glass, is
reflected into the condenser.
Never use direct sunlight (danger of damag-
ing eyes due to glare, poor illumination).
Battery connection
If there is no way of connecting the microscope
to the mains, you can connect a 12 V or 24 V car
battery or another low-voltage power source
yourself instead of using the illuminating mirror
(Fig. 38). To do this, the normal power lead to the
lamp holder in the microscope base has to be
interrupted.
!
However, on no account may the new power
lead connect the lamp holder directly to the
power source. For adjustment of the lamp
intensity, interpose a suitable single-turn poten-
tiometer or slide resistor, also a fuse and a
suitable fixed resistor, as in reality, for example,
the "12 V" network of vehicles sometimes has
higher voltages, which could destroy the lamp.
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Heating stage
Temperature range up to approx 40 °C.
Assembly: Detach the ordinary specimen stage
(only rectangular stages are suitable) from the
stage bracket by undoing the 4 Allen screws
underneath the stage and replace with the
heating stage, using the two screws at the back
only! No special objectives or condensers are
required. The heating stage has its own in-
struction manual. Heating stage 350 (up to
350 °C) should not be used, as it requires
condensers with long intercept distances for
exact illumination conditions (see DM LB and
DM R microscope series).
Multi-viewing attachments
Dual viewing attachment L 3/20 for 2 viewers
(Fig. 40). The two viewers may either sit next to
each other (images rotated by 180° in relation to
each other) or opposite (image positions
identical). The telescopic support (40.3) should
always be set exactly, making sure that the
tracing device is not at a tilt to the microscope
and that the microscope stand is not deformed.
The fade-in arrow (40.2) can be moved in x and y
direction: Move the lever (40.1) vertically or pull
out/push in. If this lever is rotated, the colour of
the arrow can be changed (red – yellow).
Multi viewing attachment L MD 3/20 (Fig. 41)
→ separate manual.
There may be limitations for specimen images in
dim light (darkfield, polarization, fluorescence).