11
one for longitude:
lon:
DDºMM.FFFH
H:
E for eastern hemisphere, W for western hemisphere
DDD:
0-180 degrees.
MM:
0-59
minutes
FFF:
0-999
1/1000
minutes.
example:
lon: 4º37.190E
and one for the age of the position (HXV mode) or UTC time of last position (HVA mode):
fix=DD
mins
old
(HXV
mode)
DD:
0-99
minutes.
fix=HH:MM
UTC
(HVA
mode)
HH:
0-24
hours.
DD:
0-59 minutes.
The Buoy Finder 4A continuously searches for newer GPS positions in the incoming data.
When a new GPS position is found, the position is updated.
In HXV mode, the time elapsed (“age”) of the received buoy position is displayed in minutes.
The age is referenced to the beginning of the transmission. It is not referenced to the time of
acquisition. Please refer to the manual of the buoy for the time of acquisition relative to the start
of a transmission. Normally, because a new position is sent every 30 minutes and receiving a
position takes 4-6 minutes, the age of the position does not exceed 36 minutes.
If the age of the last found position exceeds 60 minutes, the Buoy Finder 4A removes this
position from its memory and will not show it anymore.
In HVA mode, the UTC time of the last received position is given. The GPS position fix will be
updated every 10 minutes.
3.4.2 Heave
The momentary heave that is received is also displayed between the messages of the GPS
position and continuously when the receiver has not yet received a GPS position.
The format is:
heave: DDDD cm
DDDD:
0-9999 cm.
3.4.3 Bit errors
When a vector (64 bit data part) is received with errors, the receiver shows the message:
bad
vector
