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L-3 ELAC Nautik
A NMEA proprietary sentence ELAC is available to allow the transfer of dual channel depth
information, including transducer mounting position.
ELA (Manufacture’s Mnemonic Code)
k: S= Starboard, P= Port, B= Bow, A= Aft, 0=not selected
m: K=DBK (Depth below Keel), S=DBS (Depth below Surface), T=DBT (Depth below
Transducer)
r: Range Scale
q: Quality of digital depth reading:
0=no depth information available
1=no depth information available, poor quality
2=depth information available, high reliability
Example:
To activate the Protocol ELAC see chapter 5.1.2 Initial System Set-up.
$ CSDS, , , , , , ,r,* <CR><LF>Pkx.xd.d-t.tmghh
ELA
Checksum
Depth quality
Selected depth mode
Distande transducer-keel
in metres (TRIM)
Distance transducer-surface
in metres (DRAFT)
Depth in metres
Transducer location
Manufacture´s mnemonic code
P:Propriatary sentence identifier
Range Scale
$ CSDS, , , , , , ,0500,* <CR><LF>P B 0337.0 3.4 -1.5 K 2 3F
EL
A
Checksum
Depth information, high realibility
Depth below keel
TRIM, transducer 1.5 m above keel
DRAFT, transducer 3.4
below surface
Depth = 337.0 m
Depth from Bow transducer
Range Scale