Dbs Depth Of Trawl Below Surface; Hfb Trawl Headrope To Footrope And Bottom - Simrad ES70 - INSTALLATION REV A Installation Manual

Simrad ES70
given pitch angle (i.e. as a rotation angle around the pitch tilted forward pointing
x-axis). The latter convention (called Tate-Bryant in the POS/MV documentation) is
used inside the system in all data displays and in logged data (a transformation is
applied if the roll is given with respect to the horizontal).
Note that heave is displayed and logged as positive downwards (the sign is changed)
3
including roll and pitch induced lever arm translation to the system's transmit
transducer.
4 This format has previously been used with the EM 950 and the EM 1000 with the
first synchronisation byte always assumed to be zero (Datagram "Kongsberg EM
Attitude 1000"). The sensor manufacturers have been requested to include sensor
status in the format using the first synchronisation byte for this purpose.
It is thus assumed that:
• in the first byte indicates a valid measurement with full accuracy
90h
• any value from
accuracy with increasing number)
• any value from
example configuration or calibration mode)
• and any value from
Related topics
• How to set up the motion sensor interface on page 92

DBS Depth of trawl below surface

This proprietary Simrad telegram contains the depth of the trawl sensor.
Format
@IIDBS,,,x.x,M,,<CR><LF>
Format description
1 = talker identifier (mandatory)
II
2 = telegram identifier
DBS
3 = depth in meters (0 to 2000)
x.x,M
Related topics
• How to set up the Simrad ITI Trawl system interface on page 87

HFB Trawl headrope to footrope and bottom

This proprietary Simrad telegram contains the distance from the headrope to the footrope,
and from the footrope to the bottom.
Format
@IIHFB,x.x,M,y.y,M<CR><LF>
170
to indicates valid data with reduced accuracy (decreasing
91h 99h
to indicates non-valid data but normal operation (for
9Ah 9Fh
to indicates a sensor error status
A0h AFh
343522/A