Temperature Control
5
Keysight 5500 SPM User’s Guide
5-11
Note that Cable 3 includes a tab on the black-wire side of the connector
(
). The tab must face the Lo jack on the controller.
Figure 13-13
Tab side of Cable 3 must be inserted into the Lo jack.
Imaging
1
Set up the microscope for typical operation. As mentioned, uncoated
silicon probes are highly recommended.
2
Mount the sample on the sample plate.
D
o not use double-sided tape
to mount the sample because the glue may soften or melt, causing
large sample drift
.
3
Turn on the Lakeshore temperature controller.
4
On the Lakeshore controller’s front panel, press the
Heater
Off
button.
5
Press
Auto Tune
, then press the
Up
or
Down
arrow buttons until the
display read
Tune:Manual
.
6
Set the Proportional, Integral and Differential gains. Typical values
are
20
,
20
and
100
respectively.
7
Press
Setpoint
and enter a value slightly lower than room
temperature (23
C). Wait for the setpoint value to stabilize.
8
Set the Ramp Rate to no more than
10 degrees per minute
(5
degrees/minute is a typical ramp rate).
9
Press the
Heater Range
button and select
Low
,
Medium
or
High
.
NOTE
When turned on, the Lakeshore controller will attempt to adjust the plate
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. Beginning with a setpoint
slightly below ambient avoids this problem.