Description
Contents of data field
Checksum: All data before the asterisk (*) except$ characters are EX-ORed and used.
MTW
Water temperature
Ver.1.5
VTG
Course and water speed
Ver.1.5
$ - - VTG, xxx.x, T, , , xx.x, N, , a *hh <CR><LF>
Sentence
name
$
- -
MTW, xx, C *hh <CR><LF>
Checksum
Talker device code
Temperature(
℃
)
Start of sentence
These fields are not used.
Talker device code
Ship’s bearing
（
True
）
Sentence name
Ground speed
(knt)
Checksum
Mode identifier
Start of sentence
Serial output data
Data format: NMEA0183 Ver. 1.5 and 2.0
Output data configuration
The bit configuration of the byte is as specified below.
Start bit D 0 D 1 D 2 D 3 D 4 D 5 D 6 D 7 Stop bit
Logic0
Logic 1
1 bit1, logic 0
1 bit or more
Higher than +4V
Lower than 0.5V
Data bit (ASCII code)
Output data specifications
Baud rate
Output level
Output current
Output sentences included
Update rate
4800 baud
TTL
5mA max.
DBS+MTW+VHW+DBT+DPT+GGA*
4.6 seconds
* The GGA sentence is output only when input from external equipment.
Details of output sentences
Description
Contents of data field
Checksum: All data before the asterisk (*) except$ characters are EX-ORed and used.
DBS
Depth data (From the sea surface to the seabed)
Ver.1.5
DBT
Depth Below Transducer (From the transducer to the bottom)
$ SD DBS, xxxx.x, f, xxxx.x, M, xxx.x, F *hh <CR><LF>
Ver.1.5
Checksum
Sentence
name
Checksum
Start of sentence
Talker device code
Depth (feet)
Depth (meters)
Depth (fathom)
Sentence
name
Start of sentence
$ SD DBT, xxxx.x, f, xxxx.x, M, xxx.x, F *hh <CR><LF>
Depth (fathom)
Depth (meters)
Depth (feet)
Talker device code
0093132312/0093132314 23
