25
Leica RM2255
In the trimming mode, the coarse feed buttons operate a continu-
ous movement as long as the button is held down. The double-ar-
row button for rapid coarse feed backward movements has a lock-
in function.
•
To start the rapid backwards movement (away from the blade) press
the button
.
After the button
is pressed, the object head is moved to the rear
end position.
•
To stop the movement, press any of the four coarse feed buttons.
•
The yellow LED (
40
) in the button flashes while the object head is in
motion, and remains lit continuously when the rear end position is
reached.
•
Press the button to start the slow backwards movement. The
travel continues as long as the button is held depressed.
•
Press the appropriate button to start a rapid or slow forward move-
ment. The travel continues as long as the button is held depressed.
•
During the forwards movement, the yellow LED (
41
) in the button flashes.
When the front end position is reached, an acoustic signal is heard and
the LED stops flashing and remains lit.
When continuous feed is selected, the coarse feed buttons have the same func-
tions as in trimming mode. The
STEP
function is useful for careful step-by-step
approximation of the specimen towards the blade.
How to activate the
STEP
function:
•
Switch the instrument on while holding the button on the control panel.
Likewise, to deactivate switch the instrument on while pressing the
button .
•
When pressing a slow-speed coarse feed button in
STEP
mode, the specimen
moves towards or away from the specimen by the value indicated on the dis-
play (single step).
•
By short activation of a double-arrow coarse feed button, a single step is also
effected in the appropriate direction.
•
Longer activation of the double-arrow coarse feed button effects a repeated
feed motion for as long as the button is pressed.
5.
Operation
40
41
Backwards coarse
feed
Forward coarse feed
In sectioning mode the user can select between STEP function
(step-by-step specimen feed) and continuous specimen feed.
Multiple
step
backward
Multiple
step
forward
Single
step
backward
Single
step
forward
Sectioning mode
Button functions in
STEP mode
Trimming mode
