the open-source SPM Controller & PLL can be used as:
This MK3-PLL model is fully compatible with the SPM control software developed by the GXSM Group. This model has more computation power and memory than the MK2-A810 model, which allows for further developments and improvements of the next generation of the GXSM control code.
The major addition to this model is the embedded PLL module.
Download the firmware (the last version developped by GXSM).
Ultrathin Bi(111) film on a Si(111)-7×7 substrate. Images provided by, C.A. Bobisch, M.C. Cottin, J. Schaffert and R. Möller
This Mk3-PLL unit can also be used as a stand alone PLL unit. This means that a personalized SPM controller can be used with the MK3-PLL unit as an external powerful PLL. (For more information, download the Open Source PLL user guide below).
Complete Documentation & software
SignalRanger Mk3 software for firmware update is available via this link:SR3_Applications_Installer.
Stand-Alone PLL for Windows:Stand-Alone PLL software.
The complete GXSM documentation for the MK3-PLL controller is available online via this link:http://gxsm.sourceforge.net.
Navigate to Documentation/Manual and download the GXSM Manual:http://gxsm.sourceforge.net/Gxsm-main.pdf.
SPM Control with Embedded PLL
This digital PLL can be implemented as a module of the SPM controller’s firmware. Thus, high resolution input and output signals are directly accessible in digital form. No DAC/ADC conversions take place between the PLL and SPM controllers, as is the case with a stand-alone PLL. This provides greater precision and lower group-delay for a faster loop response.
The new generation of the GXSM control code will include this embedded PLL.