Chapter 8 Functions and Operations of the Devices
96
2.3
P2-FMDN Focus Mount
The P2-FMDN Focus Mount used exclusively for the SMZ18 can
be attached to various types of stands with a 32-dia support pillar.
Restriction
Microscope systems including the P2-FMDN Focus Mount cannot
be combined and used with the P2-EFLM Motorized Epi
Fluorescence Attachment.
Focusing operation
Turn the right/left single-axis focus knob in the same direction
to focus on the specimen.
The figure shows the turning directions of the focus knob and
the corresponding vertical movements of the focus mount.
Turning the knob backward: Upward movement
Turning the knob forward: Downward movement
• Focusing stroke: 65 mm
• Stroke per rotation of the focus knob:
Coarse control, 18.50 mm/rotation
Fine control, 3.27 mm/rotation
P2-FMDN Focus Mount
Notes on turning the focus knobs
• Do not turn (or twist) the right and left focus knobs in opposite
directions at the same time. Doing so may cause malfunction.
• When the focus knobs reach their rotational limits for the unit’s
vertical movement, do not forcibly turn it further. Doing so may
cause malfunction.
1 x
SHR Plan apo WD:60
Do not turn the knobs in the opposite direction!
Torque of the focus knobs
The torque of the coarse focus knobs can be changed by
turning the torque adjustment ring on the base of the left
coarse focus knob using the tool supplied with the stand.
Adjust the torque to an appropriate level.
Notes on the torque adjustment
When the torque is too low, the zooming body may slide down due
to the various loads it carries, such as its own weight or the load of
the counterbalance spring inside the focus unit. This may result in
injury, such as pinching fingers between the objective and sample,
or cause damage to the sample or objective.
Note that turning the fine focus knob will cause the coarse focus
knob to also turn, changing the torque of the fine focus knob.
1x
SHR
WD:60
P
l
a
n
Apo
0.75
1
2
Adjusting the torque of the focus knobs
Focus mount
Upward movement
Downward movement
Focus knob
(inner: coarse control/
outer: fine control)
Torque adjustment
ring
Increase
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