User manual

SeaSTAR 3100LRS USER MANUAL
Issue 1.0 08/02
28
3100LRS High Performance (HP) Services Menu
Displays various data being calculated by the internal High Performance
processor. Some displays may show only zeroes
1
.
HP Services by pressing the ⇒ key
the following sequence occurs. Pressing
the ⇐ key gives the same fields in
reverse.
Current Latitude shows latitude of the
present position as calculated by the
High Performance processor.
Current Longitude shows longitude of
the present position as calculated by the
High Performance processor.
GPS Time shows the time of the last
calculated position.
Position Quality Information
• 'Q' is the mode flag (0 = invalid; 1 =
standard non-differential GPS; 2 =
DGPS; 5 = HP) as reported by the HP
processor.
• 'SVs' shows the number of satellites
used for that particular position fix. (If
Q=0, SVs will generally also be 0).
'HDOP' shows the quality of the fix
geometry as a crude indicator of position
quality. HDOP<3.0 is most reliable.
HP correction information The first
number shows Differential Correction
age in seconds as measured by the HP
processor; Stn is the station ID (always
set to 100).
Read from the $GPGGA sentence
If the ⇒ key is pressed again the HP Services menu option reappears.
Pressing the ⇓ key moves onto the next menu.
1
During the initialisation period for the High Precision position calculation.
HP Services ……
RECV →
LAT: S 31 56’ 40.584”
RECV →
LON: E 103 24’ 23.455”
RECV →
GPS Time: 10 :14 :58
RECV →
Q : 2 SV’s : 6 HDOP : 1.6
RECV →
DC-Age : 05.0 Stn : 0100
RECV →
FSPAS Ref.: B31005102PMBRA0