Thales Z-Max Operation And Application Manual page 31

OPTION I - Instant-RTK
The I option is an extension of the J option. When this option and the J option are
enabled, the receiver can use the mode Instant RTK which uses a new data
processing strategy for integer ambiguity initialization. The initialization time using
Instant RTK typically requires only a single epoch of data to compute a position if
there are 6 or more satellites available with reasonably open sky, low multipath, and
the baseline length is less than 10 km.
OPTION G - Long Range RTK
The G option is also an extension of the J option. When the G and the J options are
enabled, the rover receiver uses the Long Range RTK algorithms incorporating a new
data processing strategy for integer ambiguity initialization over long baselines. Using
Long Range RTK the rover can typically fix integer ambiguities over baselines up to
50 kilometers in length, when 6 or more satellites are available with reasonably open
sky and low multipath.
OPTION H - 5 Hz Synchronized RTK
The H option enables the receiver to output synchronized or matched time-tagged
RTK positions at rate of up to 5 Hz (5 positions per second). 5 Hz Synchronized RTK
allows the user to attain the better accuracy of matched time-tagged RTK with nearly
the same productivity of Fast CPD. This feature is not available when using RTCM
format data.
8 Z-Max Surveying System Operation and Applications Manual