5. Operation
Functional areas A and C - Instruments with sectioning motor only
5.4.2 Setting the sectioning window
The term ‘Sectioning window’ stands for a dif- ferent (slower) speed setting in that part of the sectioning stroke where the specimen is actual- ly cut, while the remaining sectioning stroke (above and below the specimen) as well as the retraction (return) stroke are carried out at a higher speed level
If a sectioning window is set, speed inside the window is as set on the control panel. Outside the sectioning window the specimen head trav- els at a proportionately higher speed.
Always set the sectioning window while in the sectioning stroke (speci- men moves downward). Setting the window in retraction stroke (speci- men travels upward) is not possible.
•Position lower edge of specimen approx. 3 mm above the knife edge (rotate hand- wheel clockwise).
Press sectioning window key.
•Position upper edge of specimen just below the knife edge (continue to rotate the hand- wheel clockwise).
The value has been stored when the LED in the sectioning window key lights up briefly.
If the LED flashes, the value has not yet been stored, because the user has tried to set a win- dow margin outside the possible window range (the area in which the sectioning window can be set is slightly smaller than the total section stroke).
•In that case, repeat the step in question.
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The sectioning window cannot be deleted. If need be, it can be set to maximum size (i.e. almost the en- tire sectioning stroke will be car- ried out at one and the same speed).
Every time after the instrument is disconnected from mains, the sec- tioning window is set to maximum size upon switching back on. This also applies when the instrument is switched on for the first time.
Press sectioning window key once more.
36 | Instruction Manual V1.2 - 11/2006 |