Output Data String Formats; Valeport Nmea Data String ($Prvat); Sddbt Data String; Tritech Data String - Valeport VA500 Operating Manual

Section 5 | Output Data String Formats

5 Output Data String Formats

If the optional pressure sensor is fitted and enabled then the only data format that supports this is
the Valeport NMEA format. A number of other formats have been implemented to provide
compatibility with existing systems.

5.1 Valeport NMEA Data String ($PRVAT)

#082;NMEA<CR>
$PRVAT, xx.xxx,M, xxxx.xxx, dBar*hh<CR><LF>
Field Number:
1. Range from transducer
2. Units
3. Pressure
4. Units
5. Checksum
Example:
$PRVAT,00.115,M,0010.100,dBar*39
$PRVAT,00.116,M,0010.000,dBar*3d

5.2 $SDDBT Data String

#082;SDDBT<CR>
$SDDBT,x.x,f,x.x,M,x.x,F*hh<CR><LF
Sounder, Depth: Depth below transducer
Field Number:
1. Depth, feet
2. f = feet
3. Depth, meters
4. M = meters
5. Depth, Fathoms
6. F = Fathoms
7. Checksum
Example:
$SDDBT,0.4,f,0.1,M,0.1,F*02
$SDDBT,0.4,f,0.1,M,0.1,F*02

5.3 Tritech Data String

#082;TRITEC<CR>
xx.xxxm<CR><LF>
Example:
00.126m
00.124m
© 2022 – Valeport Ltd
This format limits the resolution of the altimeter to 0.1m
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