Zeiss SIGMA Series, Instruction Manual

Page: 126 / 170

5 Commissioning and First Operating Steps | 5.9 Shutting down the System ZEISS
18. When you are finished acquiring the Raman spectra, then move the stage back to the posi-
tion x = 0, y = 0, and z = 0.
à
INFO: The position x = 0, y = 0, and z = 0 is
the reference position for the correlating
SEM position.
19. To go back to SEM imaging, click Move to SEM in the Raman Correlation tab of the
SEM Raman Correlation window.
5.9 Shutting down the System
5.9.1 Finishing the Work Session
To finish your work session, you need to switch off the EHT.
Change to STANDBY mode when the microscope is not operated, even for longer periods. The
filament will continue to be heated, and the vacuum in the electron optical column and in the
specimen chamber will be maintained.
The STANDBY mode is also the recommended mode to store the microscope. In this case, acti-
vate the Partial Vent on Standby checkbox in the Vacuum tab of the SEM Controls panel. This
can help to prevent oil vapors from penetrating into the specimen chamber during the period of
storage.
NOTICE
Schottky field emitter
If the Schottky field emitter is switched on and off too frequently or inappropriately, its lifetime
is reduced.
4
Avoid switching off the gun during the working week.
4
Use Standby mode for the weekend or a break of up to a week.
4
When using the Standby mode, activate the Partial Vent on Standby function.
Prerequisite
ü The microscope is in ON mode.
Procedure 1. Click the All: button in the status bar.
2. Select EHT Off from the pop-up menu.
3. Only when interrupting work for longer periods between 2 and 7 days: In the Vacuum tab
activate the Partial Vent on Standby checkbox.
à
This maintains the gun vacuum, and switches off and protects the turbo pump.
4. Exit the SmartSEM user interface. Refer to Exiting the SmartSEM User Interface [
}
127] .
5. Close all programs and software.
6. Select
Windows start button > Power icon > Shut down .
7. At the front of the plinth, press the Standby button.
126 Instruction Manual ZEISS SIGMA series | en-US | Rev. 7 | 352102-9344-006