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NMEA VLW
The NMEA VLW datagram contains the travelled distance of the vessel. Two
values are provided; relative to the water and over the ground.
Supported datagram formats for drop keel offset information
If your vessel is equipped with a drop keel, the operating depth of the transducer face
will vary. This variation affects the position of the transducer in the vessel's coordinate
system. To make accurate measurements, this offset must be compensated.
The following datagram format is supported:
Kongsberg OFS Drop keel
The proprietary OFS datagram contains the current length travelled by the drop
keel. The information is required to establish the offset of the transducer face
relative to the vessel origin. A custom-built sensor may be required for this
measurement.
Supported datagram formats for GPS (position) information
Accurate and reliable information from navigation systems are useful for the CP60
operation.
When enabled, the vessel's current geographical position is
shown on the top bar. The following datagram formats are
supported:
NMEA GLL
The NMEA GLL datagram transfers the latitude and longitude of vessel position,
the time of the position fix and the current status from a global positioning system
(GPS).
NMEA GGA
The NMEA GGA datagram transfers time-, position- and fix-related data from a
global positioning system (GPS).
NMEA GGK
The NMEA GGK datagram is used to decode the PTNL, Time, Position, Type and
DOP (Dilution of Precision) string of the NMEA 0183 output.
PTNL,GGK
PTNL ,GGK is a proprietary datagram from Trimble (https://www.trimble.com).
The PTNL, GGK datagram is longer than the NMEA-0183 standard of 80
characters. The PTNL, GGK datagram is used to decode the time, position, type
and dilution of precision of the current position.
110-0006927/A (Preliminary)
Preliminary version 2022-07-26
Technical specifications
209
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