CVS-841/851 Chapter 10
Technical References
10.3 Serial output data
Data format:
NMEA-0183 Ver. 1.5 and 2.0
10.3.1 Details of output data sentences
Data structure
NOTE: A parity bit is not provided.
10.3.2 Output signal specification
Data rate: 4800 baud
Output signal level: TTL
Output current: 5 mA Maximum
Data refreshing rate: 1 second
Name &
Version
Sentence name
DBS Depth data (From the sea surface to the seabed)
Ver.1.5
$ SD DBS, xxxx.x, f, xxxx.x, M, xxx.x, F *hh <CR><LF>
Sentence
Depth (meters) Checksum
name
Depth (feet) Depth (fathom)
Talker device code
Start of sentence
D0 D1 D2 D3 D4 D5 D6 D7
Logic 0: >+4V
Logic 1: +0.5V
Data Bit (ASCII Code)
Start Bit
Stop Bit
NOTE: Checksum is a total sum of EX-ORed data that are put between the $ and asterisk (*) signs.
93132682-01 10-3