2. Installation and setup
No. 99MBA091A
2-5
2.4 Moving the Optical Tube Unit
2.4.1 When a great and quick travel of the unit is required
Turn the coarse-feed wheel with a large diameter until the optical tube unit moves to the
required height. The unit moves 30mm per full rotation of the wheel. This operation is
required to roughly focus the optical tube or quickly escape it.
2.4.2 When a fine travel of the unit is required
Turn the fine-feed wheel with a small diameter until the optical tube unit moves to the
required height. The unit moves 0.2mm per full rotation of the wheel. This operation is
necessary for final focusing of the optical tube.
NOTE
1. Exercise sufficient care when the optical tube unit descends so as not to hit a
work piece by lens or the optical tube unit.
2. Do not turn both coarse-feed wheels simultaneously in the reverse direction.
3. Do not turn the wheels any more when the tube unit has reached either stroke
end.
There is a risk of damage to the internal feed mechanism in either case of
above-mentioned 2 and 3.
Fine-feed wheel
Coarse-feed wheel
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