Simrad Simrad SP70, Installation Manual

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Technical specifications
163
851-164336 / D
Trawl systems
The SP70 interfaces a trawl system via Ethernet or on a serial line.
The serial interface uses either the NMEA 0183 standard, or
Simrad’s version of it. In the Simrad version of NMEA telegrams,
the Start Of Sentence delimiter
$ is replaced with @ .
The following trawl systems are interfaced: ITI, FS900 and
FS3300.
Note
Other telegrams than trawl may be received from the ITI, since this
system may be used as a telegram router.
ITI Inputs
The SP70 can receive the following trawl telegrams from the ITI
system.
•
Trawl position true vessel
•
Trawl position in cartesian co-ordinates
•
Trawl position in latitude and longitude
•
Depth of trawl below surface
•
Water temperature at the trawl
•
Trawl headrope to footrope and bottom
•
Trawl door spread
•
Trawl spread 2
•
Trawl filling
•
Trawl to shoal distance
•
Heading, magnetic
•
Heading, true
Trawl position true vessel
@IITPT,x,M,y,P,z.z,M<cr><lf>
where (from left towards right):
Component Content
TPT True trawl position relative to the vessel
x,M Horizontal range to the target
y,P Ttrue bearing to the target
z.z,M Depth of trawl below the surface