Leica Biosystems VT1200/VT1200 S - Manual (Page 21)

19 Leica VT1200 / VT1200 S
When the instrument is switched on, to make it easier to insert a specimen,
the specimen receptacle automatically moves into the lowest position (the
LED in the DOWN key lights up) and the blade holder moves into the rear-
most position (the LED in "Blade away" from the specimen lights up).
The parameters last used before switching off the instrument: The blade
feed rate (SPEED), selected amplitude (AMPL) and section thickness saved
by the MEMO key are called up again.
The LED illumination is switched on automatically. You can switch it off
using the ON/OFF key (lamp symbol).
5.2.1 Moving the specimen receptacle vertically
When the DOWN key is pressed, the specimen receptacle automatically
moves quickly into the lowest position. (The LED in the DOWN key lights up
when the lower end position is reached.) The ∑µm display is set to "0". If
the DOWN key is pressed a second time while the specimen receptacle is
moving downwards, the specimen receptacle comes to a stop. The current
position appears on the ∑µm display (lowest position = 0). The ∑µm display
does not change while the specimen receptacle is in motion.
When the UP key is pressed and held, the specimen receptacle moves
quickly upwards into the desired position. After the UP key has been re-
leased, the current position of the specimen receptacle appears on the ∑µm
display. If the specimen receptacle reaches the upper end position, the LED
in the UP key lights up (uppermost position = 20,000 µm). The ∑µm display
does not change while the specimen receptacle is in motion.
You can reset the display for the current position of the specimen holder to
zero at any point using the CLEAR /∑µm key. The section thicknesses are
then added in the ∑µm display.
5. Working with the Instrument
Switch on the
instrument.
1 = on 0 = off
Caution: To practice the key functions, always make sure there are
no blades installed! Do not install the blades until you are familiar
with all of the key functions.
5.2 Control elements on the VT1200 control panel