43
8. Operation
1
2
↔
Fig. 52 Tube setting
↔
Personal eyebase settings
1 Scale (mm), 2 Intermediate module*, in illustration: Ergo
module
Note:
Close any unused tube openings, as otherwise
stray light can interfere with observation.
Adjusting the Viewing Distance
• Adjust the viewing distances of the eye-
pieces so that a congruent total image is
seen (Fig. 52).
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 view-
ing angle can be adjusted by tilting the bin-
ocular viewer in the range of 5° - 32° (Fig. 53).
Adjusting the Eyepiece Section to the Arm
Length
• On the AET22 tube, the eyepieces can be
extended up to 30 mm (Fig. 53).
Beam Splitting in Photo Tubes
EDT22 tube:
The beam splitting between the observation and
documentation outputs has a definite presetting
(50%:50%).
BDT25+ 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. 53 With AET22 tube individual adjustments
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