Leica Biosystems VT1200/VT1200 S - Manual (Page 25)

23 Leica VT1200 / VT1200 S
5. Working with the Instrument
Key / setting dial Semiautomatic sectioning mode Automatic sectioning mode
In semiautomatic sectioning
mode, before each cut, a manual
feed to the desired section thick-
ness must be carried out using
the setting dial for section thick-
ness.
There is no automatic specimen
retraction in this mode; howev-
er, retraction can be performed
manually.
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 con-
tact while the blade is being re-
tracted, the specimen is lowered
by the desired retraction value
along the 2nd cutting window
edge after each complete cut.
Toggling from AUTO to
MAN
Toggling from MAN to
AUTO
The following key functions are
disabled in semiautomatic mode:
• Setting cutting window edges
• Selecting the continuous
stroke (CONT)
• Selecting the section thickness
for the automatic feed (AUTO
FEED)
• PAUSE
not active.
An audible warning signal sounds
when these keys are pressed.
The following functions keys be-
come enabled again in automatic
mode:
• Cutting window edges that
have already been set
• Section thickness (AUTO FEED)
and continuous stroke (CONT)