Nortek Signature Series - DVL Bottom Track Telemetry Formats

Telemetry Data Formats 81
© 2017 Nortek AS
7.4 DVL Bottom Track
The telemetry for the Bottom track is controlled by the SET/GETTMBT command. The DF
parameter of this command sets the data format.
Data format (DF)
Description
300
NMEA (PNORBT) format without Tags.
301
NMEA (PNORBT) format with Tags.
Table 17 Available Data formats for Bottom track.
Column
Field/TAG
Description
Data format
Example
1
BEAM
Beam number
n
BEAM=3
2
DATE
Date
MMDDYY
DATE=112813
3
TIME
Time
hhmmss.ssss
TIME=072228.23
45
4
DT1
Diff. time 1
s.ssss
DT1=0.1234
5
DT2
Diff. time 2
s.ssss
DT2=0.1234
6
BV
Bottom Velocity [m/s]
f.fffff
BV=1.11111
7
FM
Figure of Merit
f.f
FM=122.2
8
DIST
Distance [meter]
f.ff
DIST=36.66
9
WV
Water Velocity [m/s]
f.fffff
WV=2.22222
10
STAT
Status
hh
STAT=F7
Table 18 PNORBT NMEA sentence parameter description.
Example (DF=300):
$PNORBT,3,112813,072228.2345,0.1234,0.1234,1.11111,122.2,36.66,2.22
222,F7*7A
Example (DF=301):
$PNORBT,BEAM=3,DATE=112813,TIME=072228.2345,DT1=0.1234,DT2=0.1234,
BV=1.11111,FM=122.2,DIST=36.66,WV=2.22222,STAT=F7*75