MDC-1810P/1820P Series
Chapter 10
Operation Manual
Technical References
VBW
Dual Ground/Water Speed
$ - - VBW, xx.x, , A, xx.x, xx.x, A, , , , , *hh <CR><LF>
VDR
Set and Drift
$ - - VDR, xxx.x, T, , , xx.x, N, *hh <CR><LF>
VHW
Water Speed and Heading
$ - - VHW, , , , , xx.x, N, , , *hh <CR><LF>
VTG
Course and Ground Speed
$ - - VTG, xxx.x, T, , , xx.x, N, xx.x, K , a *hh <CR><LF>
WPL Waypoint
Location
$ - - WPL, xxxx.xxx, N/S, xxxxx.xxx, E/W, c-c *hh <CR><LF>
Sentence
format
Talker
device
Start of sentence
Checksum
Current speed (Knots)
True Bearing
These fields are not used
Knots
Sentence
format
Talker
device
Start of sentence
Waypoint ID:
The first 4 digits are valid to designate Waypoint
ID, which can be assigned up to 8 kinds as
maximum.
Waypoint longitude
N: North
S: South
Waypoint latitude
E: East
W: West
Checksum
Note for Talker device identifier:
Only VD (Doppler Speed Log) is
accepted.
Sentence
format
Talker
device
Longitude Water Speed (Knots)
Start of sentence
This field is not used
Checksum
Longitudinal ground speed (Knots)
Traverse ground speed (Knots)
A: Valid data
These fields are not used
Note 1:
In case the speed data in knots is not available, then
the metric speed data field will be recovered and used
for alternative metric data.
Note 2:
Talker Device:Only VD (Doppler Speed Log), VM
(Magnetic Water Speed Log) and VW (Mechanical
Water Speed Log) are accepted.
Sentence
format
Talker
device
Start of sentence
Checksum
Speed (Knt)
These fields are not used
Start of sentence
Sentence
format
Talker device
These fields are not used
Speed over
ground
(Knots)
Course over ground
(True bearing)
The radar only accepts VD as a talker.
A: Valid data
Direction
(True
Bearing)
Speed over
ground
(Km/h)
Checksum
Mode indicator
93142112-06
10-3
