Meinberg M900, Operating Instructions Manual, Page: 37 / 170

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 kilometers since last operation. Synchronization time
may be reduced significantly. 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
This menu shows the current receiver position. The „OK“ key lets the user select
one of three formats. The default format is geographic latitude, longitude and altitude
with latitude and longitude displayed in degrees, minutes and seconds. The next
format is geographic too, with latitude and longitude displayed in degrees with
fractions of degrees. The third format displays the receiver position in earth centred,
earth fixed coordinates (ECEF coordinates).
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 sub menu
enables the user to change the receiver’s system time for initialization. After the
receiver has locked, its real time clock will be adjusted using the information from the
satellites.
37
INITIATE
WARM BOOT
OF GPS RECEIVER
Press F2
GPS COLD BOOT
> GPS WARM BOOT<
Set Position
Set GPS Time
INITIAL POSITION
LAT: 51.58’57”N
LON: 09.13’32”E
ALT: 172m
GPS COLD BOOT
GPS WARM BOOT
> Set Position <
Set GPS Time
SET INITIAL TIME
MESZ
Time: 12:00:00
Date: 01.01.2008
GPS COLD BOOT
GPS WARM BOOT
Set Position
> Set GPS Time <