Leica Biosystems CM3050 S - Manual (Page 30)

30 Instructions for Use V 1.7 RevC - 08/2014
5. Operation
2. Cryochamber temperature:
Press key until menu item ‘Set chamber
temperature’ is displayed:
--> Continue as described for
specimen temperature.
3. Preset counter
(instruments with sectioning motor only):
Press key until menu item ‘Preset coun-
ter’ is displayed:
= Preset counter activated
= Preset counter deactivated
Preset counter function:
The preset counter allows the user to carry out
a predefined number of sections in the ‘Contin-
uous stroke’ sectioning mode.
Once the preselected number of sections has
been carried out (= section counter reading
‘0’), the specimen head will stop automatically
in the lower limit position.
The reference value (i.e. the value from which
the preset counter counts downward) can be
selected in the corresponding menu item.
In order to be able to set a reference value, the
preset counter function must be active.
If the preset counter is deactivated (see dia-
grams above), press to activate.
Now there are two options:
1. Increase or decrease the actual reference
value by pressing or .
2. Press and simultaneously in order to
reload the former reference value (‘0’ when
setting up the instrument) and then press ei-
ther
or individually in order to select
the desired reference value. Depending on
where you start from and where you want to
go, method 1 or method 2 is quicker (see ex-
amples).
Example 1:
Actual preset counter reading = 50
Former reference value = 300
New reference value of 65 to be selected.
Method 1 is most convenient:
• Increase from 50 to 65 by pressing
.
Example 2:
Actual preset counter reading = 50
Former reference value = 300
New reference value of 320 to be selected.
Method 2 is most convenient:
• Press
and simultaneously to reload
old reference value (300):
• Increase from 300 to 320 by pressing .
For further information on the preset counter,
please refer to chapter 5.3.6, Item 4 ‘Preset
counter’.
P R E S E T C O U N T E R
d n - - -
P R E S E T C O U N T E R
d n 0 5 6