10.4 Menu: Reference Time
Page 31
10.4.10 Init Receiver Time
If the receiver's on-board real time clock keeps a wrong time the receiver is unable to compute the satellites
correct elevation angles and Doppler. This submenu enables the user to change the receiver's system time for
initialisation. After the receiver has locked, its real time clock will be adjusted using the information from the
satellites.
When the antenna is disconnected it is possible to set the LANTIME with any time. Note that the NTP will
not synchronize to a GPS losing its reception or if the deviation to the system time is larger than 1024 seconds.
In this case the menu SIMULATION MODE (see below) has to be active. After setting the clock manually the
system time will be set and the NTP will be restarted.
Init Receiver Position
-> Init Receiver Time <-
Init COLD Boot
Init WARM Boot
Init GPS Receiver Time
MESZ: 12:48:29
01.07.2008
10.4.11 Initiate Cold Boot of GPS Receiver
This menu lets the user initialize all GPS data, i.e. all saved satellite data will be cleared. The user has to
acknowledge this menu again before the initialisation starts. The system starts operating in the COLD BOOT
mode and seeks for a satellite to read its actual parameters.
Init Receiver Position
Init Receiver Time
-> Init COLD Boot <-
Init WARM Boot
Initiate COLD Boot
of GPS Receiver
Press F2 to confirm
10.4.12 Initiate Warm Boot of GPS Receiver
This menu lets the user force the receiver into the Boot Mode. This may be necessary when the satellite data
in the memory are too old or the receiver position has changed by some hundred kilometres since last operation.
Synchronisation time may be reduced signicantly. If there is valid satellite data in the memory the system starts
in the WARM BOOT mode, otherwise the system changes into COLD BOOT to read new data.
Init Receiver Position
Init Receiver Time
Init COLD Boot
-> Init WARM Boot <-
Initiate WARM Boot
of GPS Receiver
Press F2 to confirm
LANTIME M600 MRS
Date: 31st July 2014
31
