I was trying out the Beta 3 today in Survey Mode and when I changed the Coordinate System from the stock to my local state plane I saw a message at the bottom of the screen directing me to be sure to change the CRS in the Base Unit to the same system as the Rover. I’ve gone into the base unit and I don’t see where to make this change.
You can use ReachView 2 to do base configuration. At the same time, your rover will run ReachView 3 to collect points. You need to enter the coordinates in the required datum in the Base mode settings of ReachView 2. Please check this guide for more detail.
Could you please specify what coordinate system you are using? It might help me to recommend any particular workflow that will suit your needs.