Page 39 - Echotrac E20 SBES

SERIAL OUTPUT STRING FORMATS

C.4 NMEA 0183 (for depth)

Table 15 applies to the selection of NMEA 0183 DBS with one frequency (high or low) active.

Table 15: NMEA 0183 DBS
Character # Description
1-7 $SDDBS,
Depth in feet. Single decimal floating point number.

,f,
Depth in meters. Single decimal floating point number.
,M,
Depth in fathoms. Single decimal floating point number.
,F*
8 bit hexadecimal value checksum calculated over the entire string excluding the leading „$‟
Carriage return
Line feed

Example: $SDDBS,dd.d,f,d.d,M,d.d,F*36<CR><LF>
= $SDDBS,67.915,f,20.701,M,11.319,F*32<CR><LF>
= 67.915 feet, 20.701 meters, 11.319 fathoms

C.5 DESO DDV (for heave, draft, and sound velocity)

Table 16, Table 17, and Table 18 apply to the selection of DESO DDV with one frequency (high or
low) active. With every ping, the following two strings will be generated immediately after the DESO25
output string.

This feature is only available upon request for Deso echosounders.

Table 16: DESO DDV Heave

Character # Character Description
1 D Always D

2 H Always H

3-4 DD Heave data

5 . Period

6-7 DD Heave data decimal

8 <sp> Space

9 m meters

10 CR Carriage return
11 LF Line feed

Example: DHDD.DD<sp>m<CR><LF
= DH-2.00<sp>m<CR><LF>
= Heave, -2.00 meters

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