Simrad EK15 Reference Manual page 10

Simrad EK15
TELEGRAM FORMATS .................................................... 247
About the NMEA telegram format.......................................................................248
National Marine Electronics Association (NMEA)...................................... 248
NMEA telegram principles ........................................................................ 248
Standard NMEA 0183 communication parameters ...................................... 249
NMEA sentence structure.......................................................................... 249
Specification of NMEA telegrams .......................................................................250
DBS Depth below surface ......................................................................... 250
DBT Depth below transducer..................................................................... 251
DPT Depth ............................................................................................... 251
GGA Global positioning system fix data..................................................... 252
GLL Geographical position latitude/longitude ............................................ 252
HDG Heading, deviation and variation....................................................... 253
HDM Heading, magnetic........................................................................... 254
HDT Heading, true ................................................................................... 254
RMC Recommended minimum specific GNSS data .................................... 254
VHW Water speed and heading ................................................................. 255
VLW Dual ground/water distance .............................................................. 256
VTG Course over ground & ground speed .................................................. 256
Proprietary telegrams and formats .......................................................................257
Simrad EK500 Depth telegram .................................................................. 257
Kongsberg EM Attitude 1000 .................................................................... 258
Kongsberg EM Attitude 3000 .................................................................... 259
DBS Depth of trawl below surface ............................................................. 260
HFB Trawl headrope to footrope and bottom .............................................. 260
PSIMP-D PI Sensor data ........................................................................... 260
PSIMP-D1 PI Sensor data ......................................................................... 262
PSIMDHB Bottom hardness and biomass................................................... 263
Sounder/TSS1 Motion protocol.................................................................. 264
ATS Annotation........................................................................................ 265
Proprietary third party telegrams and formats......................................................266
Atlas depth telegram ................................................................................. 266
Furuno GPhve heave telegram ................................................................... 266
ECHO SOUNDER THEORY............................................... 267
Concepts ...............................................................................................................268
Observation range..................................................................................... 268
Bottom echo ............................................................................................. 269
Wave propagation ..................................................................................... 270
Biomass ................................................................................................... 271
Dynamic range and display presentation..................................................... 271
Bottom slopes........................................................................................... 272
Parameters ............................................................................................................275
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