Olympus U-AFA2M-CB Anleitung Handbuch - Seite 7

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1. Notes on Af (Autofocusing)

Notes on AF (Autofocusing)

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.

Fig. 1

Getting Ready

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.)

Stopping the Stage in the Middle of Motorized Focusing Operation

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 "

The microscope will restart unless the motor is failed.

" (OFF) then " " (ON) again.

U-AFA2M