Tips & Tricks

Reducing noise in low level measurements

In order to achieve stability over a large range of operating conditions, Strix contains two heaters that keep measurement and driver circuits in a constant temperature. These heaters can cause miniscule variations in power rails and ground potential.

To get the best performance out of Strix, it is advisable to disable heaters during measurements and enable them immediately after.

Example

# Disable heaters before measurements
smu.write( libStrix.PARAM_THERMAL_MODE, libStrix.MODE_HEATER_OFF )


# Do some measurements... eg.
I = smu.measure_current()
V = smu.measure_voltage()

#Enable heaters
smu.write( libStrix.PARAM_THERMAL_MODE, libStrix.MODE_HEATER_AUTO )