5. Working with the Instrument
Key/setting dial | semiautomatic sectioning mode | automatic sectioning mode |
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In semiautomatic sectioning mode, before each cut, a manual feed to the desired section thickness must be carried out using the setting dial for section thickness.
There is no automatic specimen retraction in this mode; however, retraction can be performed man- ually.
In automatic mode, the selected section thickness feed (AUTO FEED) is carried out along the 1st selected cutting window edge automatically before each cut. To prevent the specimen surface and the blade from coming into contact while the blade is being retracted, the specimen is lowered by the desired retraction value along the 2nd cutting window edge after each complete cut.
Toggling from AUTO | The following key functions are dis- |
to MAN | abled in semiautomatic mode: |
| • Setting cutting window edges |
| • Selecting the continuous stroke |
| (CONT) |
| • Selecting the section thickness |
| for the automatic feed (AUTO |
| FEED) |
| • PAUSE |
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Toggling from MAN to | An audible warning signal sounds | The following functions keys be- |
AUTO | when these keys are pressed. | come enabled again in automatic |
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| mode: |
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| • Cutting window edges that have |
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| already been set |
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| • Section thickness (AUTO FEED) |
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| and continuous stroke (CONT) |
Leica VT1200 and VT1200S – Microtome | 23 |
