Hello there,
First off, this post should have been made in the DAQ forum rather than the Volume License Manager forum. You may want to consider posting any follow-up questions or comments in that forum.
As for the technical part of the post:
FS = Floating Source
GS = Ground Referenced Source
If the source you are trying to measure is floating (such as a battery) then you will want to use the FS setting. If you source you are trying to measure is referenced to ground then you will use the GS setting.
The Field Wiring and Noise Considerations guide is a good resource for information about grounding.
Hope this helps!
~~ Q ~~
