Temperature Control
5
Keysight 5500 SPM User’s Guide
5-21
Figure 13-24
Gravity-fed water cooling system for Peltier sample plate.
Imaging
1
Set up the microscope for typical operation. As mentioned above,
uncoated silicon probes are highly recommended.
2
Mount the sample on the sample plate.
3
Set the
Range
control on the current booster to its minimum setting
(fully counterclockwise).
4
Set the current booster to
1X
.
5
Turn on the Lakeshore controller and current booster.
6
On the Lakeshore controller’s front panel, press
Auto Tune
, then
press the
Up
or
Down
arrow buttons until the display read
Tune:Manual
. Press
Enter
.
7
Set the Proportional, Integral and Differential gains. Typical values
are
12
,
12
and
5
respectively.
8
Press
Setpoint
and enter a value slightly lower than room
temperature 23
C. Wait for the setpoint temperature to stabilize.
9
Set the Ramp Rate to no more than
10 degrees per minute
(5
degrees/minute is a typical ramp rate).
10
Turn the
Range
control on the current booster to maximum (fully
clockwise).
NOTE
The Lakeshore controller will attempt to adjust the temperature to the
last selected temperature as quickly as possible. Depending on the
sample, and the last temperature setting, this can be detrimental to the
plate and/or sample. Setting the temperature to ambient avoids this
problem.
