Page 28 of 68
Doc. P/N: WSP-009-002
Version: V2.3
Issue Date: July 2014
Installation Manual
www.wassp.com
GPS
Opto
Coupler
NMEA
RS232
Heading
Sensor
Motion
Sensor
Opto
Coupler
NMEA
RS232
RS232
WASSP
Processor
Figure 18 – NMEA Connections
Installation Manual
Installation Manual
NMEA
Sentence
Description
ATT
True heading, pitching, rolling (Furuno proprietary sentence)
GGA
Global positioning system (GPS) fix data.
GLL
Geographic position, Latitude and Longitude
GNS
GNSS fix data
HDM
Magnetic Heading (obtained by adding magnetic variation to HDT)
HDT
True Heading
HVE
GPS antenna up-down motion amplitude (Furuno proprietary
sentence)
ROT
Rate-of-turn data
VDR
Set and drift
VTG
Course over ground and ground speed
VHW
Water speed and heading
VBW
Dual ground/water speed
ZDA
Time and date
Table 3 – NMEA Sentences