Leica DMLB Bedienungsanleitung Seite 34

Transmitted light, basic setting
Switching on
Mains connection and fuse → p. 9 – 10.
Operate mains switch (28.9) so that the
integrated coloured pilot lamp lights up. Some
versions of the microscope (not illustrated) have
a further switch on the right side for switching
between the transmitted and incident light halo-
gen lamp.
Keep lamphousings at least 10 cm (4") away
from inflammable objects such as curtains,
wallpaper or books! Fire hazard!
Brightness
Adjust the brightness with the dial (28.11). The
numbers on the dial are not absolute values, but
are intended to enable reproducible settings.
The maximum value is about 12 V, the marking
point of a colour temperature of approx. 3200 K.
Brightfield, basic setting
Switch the condenser disc* (28.15), if present, to
the BF (= brightfield) position or pull out the light
ring slide (7.7).
Move condenser (28.4) as far as the upper stop.
Open the field diaphragm (28.10).
If present:
Pull out the light trap* (30.5; 39.4).
Set magnification changer* (45.1) at pos. 1.
If you want to use transmitted light, switch
fluorescence illuminator* into empty position or
filter system A (39.2).
34
Caution:
Adjustment specimen
For initial adjustment of the microscope it is
advisable to have a specimen that contains
areas of high and low contrast. Survey
observation → p. 33.
For incident light fluorescence of transparent
specimens, adjust in transmitted light first.
!
Attention:
Secure the specimen with object holder (Fig. 15)
or specimen clips (not illustrated). The
coverglass must point upwards.
Fig. 27 Tube adjustment
↔ Individual interpupillary distance setting
1 Scale (mm), 2 Intermediate module*, in illustration:
Ergomodule ( → 45.3)
1
2