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3.
The tension of the focusing knobs has been pre-set by factory technicians. However
you may want to readjust the tension of the focusing knobs to your desired level.
Follow the procedures below.
Increase Focusing Tension:
To increase the focusing tension, hold the left knob with your left hand; use your right
hand to turn the right knob clockwise. To check the tension, release your left hand and
rotate the knob with either or both hands in the same direction. If it is not tight enough,
repeat the above step until the proper tension is set.
(Note: If the tension is too tight, please follow the "Decrease Focusing Tension"
procedure to adjust to make adjustments).
Decrease Focusing Tension:
To decrease the focusing tension, hold the left knob with your left hand; use your right
hand to turn the right knob COUNTER clockwise. To check the tension, release your
left hand and rotate the knob with either or both hands in the same direction. If it is not
loose enough, repeat the above step until the proper tension is set.
(Note: If the tension is too loose, please follow the "Increase Focusing Tension"
procedure to adjust to make adjustments).
Zoom Head Adjustments and Setting Procedures
1.
Interpupillary Distance Adjustment: Adjust the interpupillary distance (distance
between your eyes) (Fig. 20) until you get a single non-overlapping image by rotating
the binocular eyepiece tubes to adjust the interpupillary distance (between 55mm to
75mm).
Fig. 19 (Articulating arm illustrated)
9
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