FEI Quanta FEG 250, User'S Operation Manual

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System Operation: Quanta FEG System States
3-8
Note:
a)
Waiting for a new user leaves the status of the xT microscope
Control software non-operational and only the xT microscope
Server software is active. Therefore changing the user does not
require Logging off / Logging on at Windows xP level, but just
restarting the UI level.
b)
The power plug should not be disconnected. The system can be left
in this state if electrical power is supplied to the instrument because
the pumps are running and pumping the column.
c)
It is strongly suggested to always leave the chamber in HiVac mode
when not being used. When the sample chamber is left in the LoVac /
ESEM mode, water vapour is likely to accumulate in it, PVP lifetime
decreases and the water reservoir or gas cylinder empties prematurely.
d)
The Complete shutdown procedure brings the system to the non-
powered state, where the vacuum in the column area is no longer
supported by running pumps. All valves are closed, and the electron
column and specimen chamber areas are vented.
This should only be carried out by a FEI service engineer. Normally it
is used for a system transportation or for service actions, like repair to
essential systems (electrical and air supplies).
(e)
Switching off the console when Emitter is On is not optimal and
sparing way for the emitter. User should use the Shutdown System
button only in case of emergency need.
TABLE 3-3 SHUT DOWN PROCEDURE GENERALLY
System State Action
4. Full
Operation 1. Click the Column module / Beam On button
(must be grey).
2. Click the Vacuum module / Vent button. Wait for
the Vented status. Remove your sample if needed
and remove the Cooling stage if installed.
3. Click the Vacuum module / Pump
(c)
button to
pump to the High Vacuum.
If you want to shutdown the microscope, bypass
steps 3 - 8.
3. Overnight 4. Select
(a)
the File menu / Log Off… to log off the
present user and to provide the Log On dialogue
for entering another one.
5. Switch off the monitor.
2. Standby
(b)
6. Click the Stop button to stop the
xT microscope Server software.
7. Exit xT microscope Server (right-clicking) and
Windows xP .
8. Switch Off the PC and the monitor.
1. Shutdown 9. Switch off the Emitter (see Chapter 6).
(e)
10. Click the Shutdown button to shutdown the
console and to stop the xT microscope Server .
11. Exit xT microscope Server software (right-
clicking) and Windows xP .
12. Switch Off the PC and the monitor.
0. Complete
Shutdown
(d)
13. Disconnect the power cord and any other
optional input / output if used.