If you choose base, then you have many options for your base setting
such as Format, Linker and Position.
In the Format column, you can choose the most suitable format for
your surveying.
In the Linker column, you can choose the module of different linkers.
In the Pos. column, you can choose the coordinate of base position.
If the base has not moved, you can choose Last for the position of
base. Instead, you can choose Current for the position of base. But
be sure to do the coordinate converting because the accuracy of base
in current mode is 10m by AUTO state.
A20 User Manual
Operating
Menu (4)
Set/GPS/Base
Set/GPS/Base/Format
Set/GPS/Base/Linker
Set/GPS/Base/Pos
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