Coarse Focus Knob / Fine Focus Knob Operation - Nikon Eclipse LV100POL Instructions Manual

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Coarse Focus Knob / Fine Focus Knob Operation

Knob rotation and stage vertical movement
The right figure relates the rotation direction of the coarse focus knob/fine focus knob to the vertical
movement of the stage.
• The stage rises/falls approximately 14.0 mm per
one turn of the coarse focus knob.
• The stage rises/falls approximately 0.1 mm per
one turn of the fine focus knob.
• The fine focus knob is marked in 1 µm.
• The vertical movable range (coarse/fine focus
stroke) of the stage is from 1 mm above the
reference position (upper surface of the stage) to
29 mm below the reference position.
Never attempt either of the following actions, as they will damage the microscope.
• Rotating the left and right knobs in opposite directions at the same time.
• Continuing to rotate the coarse/fine focus knob after the stage has reached the limit of its
movement.
Adjusting the torque of the coarse focus knob
The torque of the coarse focus knob can be adjusted.
To increase the torque, turn the coarse torque adjustment
ring in the direction shown by the arrow on the
microscope base (labeled "TORQUE →"). To decrease
the torque, turn the ring opposite to the arrow.
Coarse focus stopper
The coarse focus stopper restricts the movement of the coarse focus knob so that the stage cannot
be raised higher than the position the operator specifies.
When the coarse focus stopper ring is rotated in the direction of the arrow (labeled "CLAMP →")
on the microscope base, the coarse focus knob cannot be used to move the stage any higher.
(Movement of the stage by the fine focus knob is not restricted.)
For example, once the coarse focus knob is clamped in place at the focus position, a rough focus
can be attained the next time simply by raising the stage until the coarse focus knob cannot be
turned any further.
If the coarse focus stopper is not being used, be sure to turn the ring in the direction opposite to the
arrow on the microscope base as far as it goes.
[Example usage]
With the sample in focus, turn the coarse focus stopper ring as
far as it goes in the direction of the arrow (labeled "CLAMP
→") on the microscope base (about 3/4 revolution). The coarse
focus stopper is now clamped in position.
When changing the sample, lower the stage by turning only the
coarse focus knob. After changing the sample, gently raise the
stage by turning only the coarse focus knob as far as it goes. The
sample should be roughly in focus when the stage has been
raised as far as it goes. Use the fine focus knob to bring the
sample into perfect focus.
III. Operation of Each Part
0
0. 8 Ach r
0.90
0.6 JAPAN
0.4 0.2
NCB
ND8
F.S.
ON
CLICK
Ach r
To increase 0.8 0.6
the torque
EP I/D
IA
OF F
Coarse
torque adjustment ring
0. 8 Ac hr
0.90
0.6 JAPAN
0.4
0.2
F.S .
Coarse focus stopper ring
JAP AN
0.9 0
0. 2
0.4
Clamp
NC B
ND 8
25