CVS-833/833C Chapter 9
Technical References
9.3 Serial output data
Data format:
IEC 1162-1 (NMEA-0183 Ver. 2.0)
9.3.1 Details of output data sentences
Data structure
NOTE: A parity bit is not provided.
9.3.2 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
Depth (fathom)
Sentence
name
Checksum
$ SD DBS, xxxx.x, f, xxxx.x, M, xxx.x, F *hh <CR><LF>
Talker device code
Depth (feet)
Depth (meters)
Data Bit
D0 D1 D2 D3 D4 D5 D6 D7
Logic 0: >4V
Logic 1: +0.5V
Data Bit (ASCII Code)
Stop Bit
1bit or more：Logic 1
Start Bit
1bit：Logic 0
NOTE: Checksum is a total sum of EX-ORed data that are put between the $ and asterisk (*) signs.
Start of sentence
93132902-00 9-3
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