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37
8. Operation
Fig. 40 Tube setting
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Personal viewing distance of the eyepieces
8.4 Tubes
Note:
Close any unused tube openings, as otherwise
stray light can interfere with observation.
Adjusting the Viewing Distance
Adjust the viewing distance of the eyepieces
so that a congruent total image is seen (fig. 40).
Adjusting the Viewing Angle
• For the HC LVB 0/4/4 and HC -/0/4 ergonomy
tubes*, the viewing angle can be adjusted by
tilting the binocular viewer
Ergotube (long, swivelable): 0° - 35°
Ergotube (short, swivelable): 7.5° - 32.5°
• For the AET22 and EDT22 ergotubes*, the
viewing angle can be adjusted by tilting the
binocular viewer in the range of 5° - 32° (fig. 41)
Adjusting the Eyepiece Section to the Arm
Length
• On the AET22 tube, the eyepieces can be
extended up to 30 mm (fig. 41)
Beam Splitting in Photo Tubes*
EDT22 tube:
The beam splitting between the observation and
documentation outputs has a definite presetting
(50:50).
BDT P 25 tube:
The beam splitting is set manually by pulling out
a control bar.
Control Bar Observation Photo
VIS 100% 0%
50/50 150% 50%
PHOTO 110% 100%
Fig. 41 With AET22* tube individual adjustments
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