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Chapter 3 Operation Details

3.6 Adjusting the Diopters

Adjust the diopter according to the user's eyesight using the diopter adjustment rings on the eyepieces.

Diopter adjustment corrects the difference in the left and right eyesight. This adjustment facilitates binocular

observation and minimizes focal deviation when switching objectives. Make sure to adjust the diopter

adjustment rings on both eyepieces.

Diopter adjustment reference position

Figure 3.6-1 Adjusting the diopters

1 Turn the diopter adjustment rings of the eyepieces

and align their engraved lines with the edges of

the outer tubes of the eyepieces. This indicates

the reference positions for the diopter rings.

2 Follow the procedure described in “2.1 Bright-field

Microscopy under the Episcopic Illumination” or

“2.6 Bright-field Microscopy under the Diascopic

Illumination,” and focus the sample with the 10X

objective.

3 Place the 50X objective into the optical path. Turn

the coarse/fine focus knobs to focus on the

sample.

4 Place the 5X or 10X objective into the optical path.

5 Look into the right eyepiece with your right eye,

not touching the coarse/fine focus knob, and focus

on the sample by turning the diopter adjustment

ring on the right eyepiece.

6 Look into the left eyepiece with your left eye, not

touching the coarse/fine focus knob, and focus on

the sample by turning the diopter adjustment ring

on the left eyepiece.

7 Repeat the steps from (3) to (6) until the image

stays in focus even when the objective is changed.

Engraved line

Diopter

adjustment ring

Outer tube edge

Positioning

groove

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Auto Page MA-200 Bedienerhandbuch Seite 37