Operation and Installation CD401MR-SB
Edition: 2011-12-19 Rev: 1.11
Page 48 of 52
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The CD401 can be set up to produce 2 NMEA outputs:
IIVDR is a set and drift parameter to give the current displayed output, in resultant and
direction.
PSKPVDR is a proprietary NMEA sentence, containing both the current direction
with both bottom track and GPS correction and also the speed log, GPS and heading
information.
It is recommended that if you require help from SKIPPER, that this message is logged
and sent together with the enquiry.
Detailed description of the NMEA output sentences:
Speed direction
$IIVDR,x.x,T,x.x,M,x.x,N*hh<CR><LF>
Surface Current Speed in knots, bottom track (calculated)
Surface Current Direction, magnetic (not supported)
Surface Current Direction, degree true, bottom track
(calculated)
Speed direction (Proprietary)
$PSKPVDR,x.x,A,x.x,A,x.x,A,x.x,A,x.x,A,x.x,A,x.x,A,x.x,A,x.x,A,x.x,A,x.x,A,x.x,A,x.x,A,x.x,A *hh<CR><LF> (see NOTE)
True heading from HDT
True heading from THS
Course over ground VTG
Speed over ground in knots
from VTG
Transverse ground speed
from VBW
Longitudinal ground speed
from VBW
Transverse water speed
from VBW
Longitudinal water speed
from VBW
Surface Current Speed in
knots, gps track
Surface Current Direction,
relative, gps track
Surface Current Direction,
true, gps track
Surface Current Speed in
knots, bottom track
Surface Current Direction,
relative, bottom track
Surface Current Direction,
true, bottom track
NOTE: A = data valid, V = data invalid
