37
8. Operation
1
2
↔
Fig. 40
Tube setting
↔
Personal eyebase settings
1
Scale (mm),
2
Intermediate module*, in illustration: Ergo
module
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 eye-
pieces 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 view-
ing angle can be adjusted by tilting the bin-
ocular 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).
BDT25+ tube:
The beam splitting is set manually by pulling out
a control bar.
Control Bar
Observation
Photo
VIS
100%
0%
50/50
1
50%
50%
PHOTO
11
0%
100%
Fig. 41
With AET22 tube individual adjustments
