FEI Quanta FEG 250, Руководство пользователя

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Stages: Stage Related Functions
7-13
Compucentric Rotation (F12)
Clicking the Stage menu / Compucentric Rotation places a green
circle in the image window. The green triangle on its perimeter
denotes, by its position, the sample rotation relative to its original
position when mounted on the stage. Initially, this is in the 12 o’clock
position. Drag it around the circle to choose a new sample rotation.
The readouts displayed at the image window bottom provide
information about the
Actual Rotation (original position) and the
Target Rotation (the selected position).
Releasing the mouse button updates the stage position to bring the
original field of view (rotated to the Target Rotation position) onscreen.
With the sample at the eucentric position this can be performed at any
sample point irrespective of the mechanical stage center.
Clicking the written angles around the circle perimeter (0° / 90° / 180°
/ 270°) or the perimeter anywhere drives the stage to that rotation
position and the green triangle updates onscreen. Clicking the framed
+ / – sign increases / decreases the rotation angle by an incremental
value.
FIGURE 7-11 COMPUCENTRIC ROTATION
Once selected, the compucentric rotation control disappears
automatically after 10 seconds of no use (see the
Preferences… /
General tab).