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U-AFA2M
1. Applicable specimens
AF is available with any specimen with reflectivity from 3% (glass) to 100% (mirror).
However, the AF position may be deviated from the desired focusing position in the following cases.
· When observing a specimen with double structure (deposited thin film or an electrode under glass, etc.): AF on the
desired layer may be unavailable due to the multi-layer reflections.
· When observing a thin specimen with reflection from backside (glass, etc.): The AF may be unstable due to the backside
reflection.
· When observing a specimen with a regular fine pattern using a low-power objective.
· When observing a specimen with diffused surface reflections using a low-power objective.
· When observing a specimen in the reflected light DIC observation: AF may be unavailable in certain retardation positions.
Stopping the Stage in the Middle of Motorized Focusing Operation
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Notes on AF (Autofocusing)
1. This unit is a precision instrument. Handle it with care and avoid subjecting it to sudden or severe impact.
2. Do not use the unit where it is subjected to direct sunlight, high temperature and humidity, dust or vibrations.(For the
operating conditions, refer to chapter 7, “SPECIFICATIONS” on page 15.)
Fig. 1
@
The movement of the stage can be stopped immediately by turning the
fine adjustment dial @ on the BX61 microscope frame (in either direction).
When the unit is mounted on the BXFMA, the same effect can be obtained
using the focusing knob of the U-FH.
Recovering from an Error in the Motorized Focusing Module
}When the focusing module catches something in the middle of motorized
operation, a “focusing module error” occurs and the focusing operation
is stopped.
Recovery procedure
1. Provided that the motor operation error is not occurring, the caught item
can be taken out by turning the fine adjustment dial @.
2. If the motor operation error also occurred, the fine adjustment dial is
defeated. In this case, remove the nearby modules and take out the
caught item. Be sure to attach the removed nearby modules after this.
3. Set the main switch to “ ” (OFF) then “ ” (ON) again.
The microscope will restart unless the motor is failed.
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Getting Ready