FEI Quanta FEG 250, User'S Operation Manual

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System Options: Heating Stage 1000 °C / Heating Stage 1500 °C
9-41
SOFTWARE CONTROL
Temperature Stage Control Module
The cooling / heating stage is software controlled using the xT
microscope Control software / Temperature Page (added when any
temperature stage is installed) / Temperature Stage Control module.
The Cooling / Heating button
activates the Cooling / Heating stage software control. When the
stage is active / inactive the corresponding button is Yellow / Grey.
The Temperature tab
• The Actual read-out box displays the actual temperature
measured by the temperature stage hardware (the same value is
used in the databar).
• The Target edit box sets the target temperature. It is active when
either stage is enabled and no profile is running.
• The Ramp edit box sets the speed of the temperature change. It is
active when either stage is enabled and no profile is running.
• Clicking the Go To button starts to proceed to the target
temperature. It is active when no profile is running and after any
change in the
Target / Ramp edit box.
The Temperature Profile edit boxes
are used to define temperature profiles or cycles. Each row pertains to
a single heating cycle.
• Temp. - target temperature, which should be reached
• Ramp - speed of a temperature increase / decrease
• Soak time - specifies time (hours : minutes : seconds) for how
long the target temperature should be hold after it is reached
Edits are active when any temperature stage is enabled and the
profile is not running. When the profile is running the box mark at
the end of the actual step line is displayed in
Yellow .
• The Start / Stop toggle button starts / stops the Temperature
profile. The profile starts with step one. The first step with a non-
filled or a zero Ramp or with a zero Temp. value stops execution of
the profile.
• The Next / Clear toggle button: when profile is running the caption
is Next and clicking the button bypasses an actual cooling cycle in
a multiple set immediately. When no profile is running the caption
is
Clear and clicking the button resets all values. The button is
disabled when the Hold button is active.
• The Hold button switches keeping of the Actual temperature
invariable on / off. Clicking the button turns it to Yellow . It can be
used to interrupt a ramping cycle and maintain the controller at the
actual set-point. When clicking the Hold button during a ramping
cycle, the controller holds the actual temperature indefinitely, until
the button is clicked again.
The right clicking over the Temperature Profile area calls out the menu
enabling to edit entries.
Note:
Edited values are checked for limits, values out of limits are not
accepted.