RHK Technology R9 - Kelvin PI Feedback Controller; Figure B.20. aux PI Input Settings; Figure B.21. Kelvin PI Feedback Controller; Figure B.22. Kelvin PI Input in Hardware Space

Hardware Space Components
90
Figure B.20. Aux PI Input Settings
B.7.2. Kelvin PI Feedback Controller
A Kelvin PI Feedback Controller can be used as feedback controller for Kelvin Probe measurements.
Some example connections are shown below.
Figure B.21. Kelvin PI Feedback Controller
The Kelvin PI must connect to Lock-in Amplifier 1. The output of the Kelvin PI connects to either the CH1
Drive or CH2 Drive hardware items. The CH1 Drive and CH2 Drive both have a Kelvin PI input. The
connected hardware item needs to have the Kelvin PI set to Sum or Invert to be enabled.
Figure B.22. Kelvin PI input in Hardware Space