Coarse Focus Knob And Fine Focus Knob - Nikon Eclipse LV100DA-U Instructions Manual

8

Coarse Focus Knob and Fine Focus Knob

Knob rotation and stage vertical movement
The relationship between the direction of coarse/fine
focus knob rotation and the stage vertical movement is
shown in the right figure.
• One revolution of the coarse focus knob drives
the stage approximately 14.0 mm.
• One revolution of the fine focus knob drives the
stage approximately 0.1 mm.
• The fine focus knob is marked in 1 µm.
• The coarse/fine focus stroke (the vertical
movable range of the stage) is 40 mm. The stroke
from the reference position (upper surface of the
stage) differs depending on the stage model.
Do not attempt following operations, because
doing so may cause the product failure.
• Rotating the left and right knobs in opposite
directions at the same time.
• Keep rotating the coarse/fine knobs after
hitting the rotation limits.
Stiffness adjustment for the coarse focus knob
The rotational stiffness of the coarse focus knob can be
adjusted as follows.
To make it stiffer, rotate the coarse torque adjustment ring
behind the coarse focus knob in the direction of the arrow
("TORQUE →") that is described on the microscope base.
To make it looser, rotate the ring in the opposite direction.
46
EPI
OBJ .
DIA
CUB E A.S.
Stage up/down
EP I
EP I
OB J.
DI A
CU BE A. S.
DI A
Fine focus knob
Coarse focus knob
Stiffer
EP I
EP I
OB J.
DI A
CU BE A. S.
DI A
Coarse torque adjustment ring
0.9
= 0.2
Achr 0.3
0.4
0.8 0.7 0.6 0.5
EPI
DIA