Viewing Tube Adjustment
Adjust the eyetubes for your interpupillary distance.
1.Fold or unfold the eyetubes until you see one illuminated circle.
The viewing tubes maintain a constant tube length for all interpupillary settings.
This means that a change of interpupillary distance does not affect parfocality, magnifica- tion, or calibrations that depend on magnifica- tion.
•To correctly set the eyepieces, be sure the crosshair eyepiece is seated securely
in the slot of the right eyetube.
2.Focus the crosshair reticle by gripping the knurl and rotating the top of the eyepiece until the reticle is in clear focus.
3.While looking through only the crosshair eyepiece, bring the specimen into focus with the fine focus of the microscope.
It may help to cover your left eye.
4.Now switch to look only through the other eyepiece (focusing eyepiece without crosshair) with the other eye.
•This time, focus the specimen by using the focusing capability in the focusing
eyepiece. Do not raise or lower the stage to focus!
5.Grip the knurl on the focusing eyepiece with one hand and rotate the top of the eyepiece with the other hand until the specimen is in focus with this eye and this focusing eyepiece. This corrects for any vision differences between your right eye and left eye.
6.Now switch to a high magnification objec- tive (not an oil objective) and focus the microscope while viewing with both eyes.
The higher magnifications have a shal- 
lower depth of field. Therefore, after focusing with a high magnification, you will find that when you change to a lower magni- fication, you only have to adjust the fine focus
slightly, if at all.
Leica DM750 P | Manual | 30 |
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