Spectracom SecureSync 1200 User Reference Manual page 189

3.
GNSS Receiver Modes
The receiver modes are:
Standard GNSS Receiver Mode
The default GNSS receiver mode is the Standard Mode : It is the most accurate, and hence the
preferred GNSS receiver mode.
The Standard Mode can be used
not be moved. Also, it must be able to track initially at last four satellites in order to complete
the survey. (Once the survey is completed, less than four satellites will provide a valid Time and
1PPS.)
About the GNSS Survey
In the Standard Mode the so-called GNSS survey will initially be performed, once at least four
GNSS satellites become available. The GNSS survey is used to determine the exact position
and time; it takes 2000 seconds (33 minutes) to complete a survey. During the survey, the
GNSS receiver must continue to track at least four satellites, otherwise the GNSS survey will not
complete.
Upon completion of the GNSS survey the GNSS receiver will lock-in the calculated GNSS pos
ition and will enter Standard Mode . Once in Standard Mode , the GNSS survey will only be
performed again if:
In the event that SecureSync cannot complete a GNSS survey within 24 hours (e.g., the survey
progress does not go beyond 99%), see "Single Satellite GNSS Receiver Mode" on the next
page.
CHAPTER •
3 SecureSync User Reference Guide Rev. 23
Select the desired Receiver Mode, and click Submit .
the equipment will be relocated to another location and the receiver detects this (applies
to most Trimble receivers)
the Receiver Dynamics is set to resurvey automatically after every reboot (this feature is
available only with u-blox receivers; it can be turned off, see "Setting GNSS Receiver
Dynamics" on the next page.)
you manually delete the GNSS position, see "Deleting the GNSS Receiver Position" on
page 180.
only for stationary applications
3.3 Managing References
, i.e. the SecureSync unit will
173