FEI Quanta FEG 250, User'S Operation Manual

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Software Control: xT microscope Control Software
4-36
• Switch off CCD automatically
(No / 1 minute / 10 minutes / 30 minutes / 1 hour / 2 hours / 6 hours)
Specifies if and when the CCD camera and infrared LEDs should
be automatically switched off. The countdown starts when
resuming the optical quad and continues regardless of the
operator activity.
• Pause beam quads when switching off HV (Yes / No)
Specifies if the electron image quads should be automatically
paused when switching off the High Voltage.
• Allow Beam Shift in Get mode (Yes / No)
Enables / disables automatic using of Beam Shift when the user
requires very small point-to-point movements (double-click in the
image at high magnifications).
• Blank beam during long stage moves (Yes / No)
If Yes is selected, the electron beam is automatically blanked
during long software controlled stage movements. This may
protect extremely sensitive samples from exposure to the beam in
undesired areas.
The Movie Tab
provides two groups of controls: Timer to set-up the movie frame-rate
and File to set-up the path name and format of the resulting movie
(see Chapter 5).
The Sensitivity Tab
The preset sliders control the sensitivity of the Manual User Interface
(
MUI – option).
FIGURE 4-21 SENSITIVITY PREFERENCES
All MUI controls are represented except the Magnification. The
Default button sets the original settings.