Leica GPS1200 Series Technical Reference Manual page 478

Config...\Interfaces... - General
Next step
IF changes for the first
real-time interface
are not to be made
are to be made
GPS1200
THEN
CONT (F1) accepts the changes, closes the screen and returns
to the screen from where CONFIGURE Real-Time Mode was
accessed.
The second real-time interfaces is added to the list in
CONFIGURE Interfaces.
SHIFT RT-1 (F2) accepts the settings and returns to
CONFIGURE Real-Time Mode.
478