Echotrac CV100
User Manual
Page 26 of 26
Odom Hydrographic Systems, Inc.
May 28, 2008
6.3 Serial output strings
6.3.1 Echotrac
SBT
The Echotrac CV I/O is compatible with the ECHOTRAC I/O, which is the standard serial output string first
introduced in the Echotrac DF3200 MKI in 1985. Due to the wide acceptance of this string and the availability of
the format in a number of data acquisition systems, the string has been maintained in order to assure continued
compatibility.
OUTPUT format
Char. #
Description
1
Normally a Space, an “F” Indicates Fix Mark
2
“E” units are in tenths of feet
“e” units are in centimeters
3
“T” units are in tenths of feet
“t” units are in centimeters
4
Normally a Space, an “E” indicates Error
5
Always a space
6
Depth Data (MSD)
7 Depth
Data
8 Depth
Data
9 Depth
Data
10
Depth Data (LSD)
11 Carriage
Return
Please note that characters 2 & 3 are in upper case whenever the
Units
are in tenths of feet, and are in lower
case when the units are in centimeters.
Example:
<sp>et<sp><sp>DDDDD<CR>
SBT
is the default output. With the unit operating in single frequency (High or Low) or dual frequency (High and
Low), the SBT string is output until another string is selected in the Communications menu. When
SBT
is
selected, but the unit is operating in dual frequency, the High frequency depth is output.
