Thales Z-Max Operation And Application Manual page 82

VRMS (VRMS: *.***m)
Displays the vertical RMS value (in meters) computed during data
logging. RMS is an estimate of the 1-sigma position accuracy. This field
will display up to 99.999 meters.
TRAJECTORY
Site ID (SITE: ****)
Displays and sets the 4-character Site ID. To log data, press ENTER and
input a Site ID. Data will be collected at every interval equal to the Distance
Interval parameter set in the Survey Configuration (SURVCONF) submenu. If
the last character of the Site ID is numeric, the Site ID will increment each
time data is logged to the receiver.
HRMS (HRMS: *.*** m)
Displays the horizontal RMS in meters during data logging. RMS is an
estimate of the 1-sigma position accuracy.
VRMS (VRMS: *.*** m)
Displays the vertical RMS in meters during data logging. RMS is an estimate
of the 1-sigma position accuracy.
Operation 59