Page 41 - Echotrac E20 SBES

SERIAL OUTPUT STRING FORMATS

Table 19: Echotrac DBX
Field Name Format Description
1 Prefix string $DBX

2 Date time UTC YYYY-MM-DD UTC time, current time (ISO8601-2:2019)
Thhmmss.sss Notes:

Even if the UI is showing other time zones on its display, it is
the UTC that is synced to the SBES and the UTC that is
contained in this message.
Although ISO8601 defines a range of formats, the only format
available in the DBX string is the one given here.
3 Time status t 0 = UI clock, 1 = GPS sync, 2 = PPS sync

4 Depth channel A ddddd.ddd Depth below transducer (channel A)

5 Intensity A +iii.ii Intensity in dB of measured depth (channel A)

6 Draft A +rr.rrr Draft of transducer (channel A), always applied

7 Depth channel B ddddd.ddd Depth below transducer (channel B)

8 Intensity B +iii.ii Intensity in dB of measured depth (channel B)

9 Draft B +rr.rrr Draft of transducer (channel B), always applied

10 Unit u Unit for all distance fields in the record:
1 = Meter, 2 = Feet
Note: This field defines the unit for the fields 4, 6, 7, 9, 11, 13.

11 Heave value +hhh.hhh Measured heave value
Note: If a heave sensor is not connected, measured heave is

reported as zero.
12 Heave status c Heave correction: 0=off; 1=on
Note: When heave correction is on, heave is already applied to

the depth fields.
13 Sound velocity ssss.ss Applied sound velocity

14 End of frame <CR><LF> Carriage return and line feed

Full string format:
$DBX,YYYY-MM-DDThhmmss.sss,t,ddddd.ddd,+iii.ii,rr.rrr,ddddd.ddd,+iii.ii,rr.rrr,u,+h
hh.hhh,c,ssss.ss<CR><LF>
Example:
$DBX,2019-09-30T205959.999,2,00123.999,-216.14,00.950,00124.321,-
218.14,01.100,1, -002.230,1,1435.98<CR><LF>
Example:
30 Mar 2019 at 20:59:59.999 PPS synchronized, depth of 123.999m corrected for
heave for channel A at -216.14dB and 0.950m draft, depth of 124.321m corrected
for heave for channel B at -218.14dB and 1.100m draft, -2.230m heave, sound
velocity 1435.98m/s

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