Page 40 - Echotrac E20 SBES

SERIAL OUTPUT STRING FORMATS

Table 17: DESO DDV Draft

Character # Character Description
1 D Always D

2 G Always G
3-4 DD Draft data
5 . Period
6-7 DD Draft data decimal
8 <sp> Space
9 m meters
10 <sp> Space

11 CR Carriage return

12 LF Line feed
Example: DG<sp>DD.DD<sp>m<sp><CR><LF>
= DG<sp>00.00<sp>m<sp><CR><LF>
= Draft 0.00 meters

Table 18: DESO DDV Sound Velocity

Character # Character Description
1 C Always C
2 S Always S
3-6 DDDD Sound velocity data
9 <sp> Space
10-12 m/s meters per second
13 CR Carriage return
14 LF Line feed

Example: CSDDDD<sp>m/s<CR><LF>
= CS1500<sp>m/s<CR><LF>
= Sound velocity 1500 meters per second

C.6 Echotrac DBX (for Universal message)

The DBX is an ODOM-defined format that is like NMEA formats but not an NMEA compliant format.
Checksum is not included, and “DBX” is not registered by NMEA.

The representation [+]ddd.ddd (or [+]hh.hh) is a fixed point representation of a number.

The number of digits (d‟s, h‟s, or other letter) before and after the decimal point are fixed. There may
be leading zeros but not leading spaces.

A + designates that a sign is present. In that case it will display as – or +. Fields not prefixed with +
will have no sign.

DBX is sent per ping. If a channel (A or B) does not have detections for that ping or is not
enabled/pinging, its corresponding data fields in the message will be populated with zeroes.

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