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Brightness adjustment
Instead of a potentiometer, Leica DMIRB/E
microscopes are equipped with an incremental
transducer for brightness adjustment. This
means that the adjustment wheel is automati-
cally moved from clickstop to clickstop and
therefore has no end stops.
After it is switched on, the microscope is in nor-
mal operating mode. In the first line of the LC
display, the current Z position is given in µm or
mm on the left.
You can switch to the lamp voltage display by
pressing the “CHANGE” key on the control
panel. The lamp voltage is displayed in volt from
2.5 – 12 V. If you press the “CHANGE” key again
you return to the display of the Z position.
The lamp intensity is adjusted by rotating an
adjustment wheel on the left side of the
microscope. If you hadn’t already switched to
the lamp voltage display, this will happen
automatically when you move the wheel.
Similarly, the display will switch to the Z position
if the Z position is changed with the handwheel
or by pressing the key.
To switch off the transmitted light illumination,
the brightness is first reduced to 2.5V. Then
rotate beyond the lower value.
To switch on again, rotate briefly in the opposite
direction.
For photomicrography we recommend a setting
of 10.5V.