User manual SIMRAD ITI TRAWL SYSTEM SERIAL DATA COMMUNICATION REV A

[. . . ] Instruction manual Simrad ITI Trawl System Serial data communication and NMEA 0183 message description 11111010001010101010 01010100100010100011 01010101000101010100 10101001100001111. . . . . . . . . . . . . . . . . Simrad ITI Trawl system Serial data communication and NMEA 0183 message description Instruction manual 857-164777 / Rev. A Note Simrad AS makes every effort to ensure that the information contained within this document is correct. However, our equipment is continuously being improved and updated, so we cannot assume liability for any errors which may occur. Warning The equipment to which this manual applies must only be used for the purpose for which it was designed. Improper use or maintenance may cause damage to the equipment or injury to personnel. [. . . ] y, M is the horizontal distance in metres from the transducer to the trawl along the vessel's centre line. The value will normally be positive as the trawl is usually behind the vessel. - requires an active depth sensor on the trawl or manual set depth, if not the slant range will be presented. z, M is the depth of the trawl in metres below the surface. - requires an active depth sensor on the trawl or manual set depth, if not the depth field will be empty. $IIGLL, ddmm. hhh, N, dddmm. hhh, W, hhmmss. ss, A*hh<cr><lf> Trawl Position in Latitude and Longitude GLL represents the trawls Geographical Latitude and Longitude. ddmm. hhh, N is the Latitude, Deg. Min. Hundredths, N=North, S=South. dddmm. hhh, W is the longitude, Deg. Min. Hundredths, W=West, E=East. hhmmss. ss UTC of position (time stamp, fraction of seconds void). - requires ZDA input from GPS for accurate timestamp. A valid - never invalid, terminates output after one minute without GLL input from a nav. Receiver. $IIDBS, , , xxxx. x, M, , *hh<cr><lf>Depth of trawl Below Surface DBS represents Depth of the trawl Below the Surface. xxxx. x, M is the depth in metres (0 - 2000). The fields for depth in feet and fathoms are empty. - requires an active depth sensor on the trawl. 857-164777 / A 13 Simrad ITI $IIMTW, -xx. x, C*hh<cr><lf> Water temperature at the trawl MTW represents the Meteorological Temperature in the Water. xx. x is the water temperature (° C) measured at the trawl. (Sign prefix only if minus. ) Range from -5° C to +30° C. - requires an active temperature sensor on the trawl. @IIHFB, x. x, M, y. y, M<cr><lf> Trawl Headrope to Footrope and Bottom (Trawl Eye/Height sensor 1) HFB represents the distances from the Headrope to the Footrope and Bottom. x. x, M is the distance in metres from headrope to footrope (0 - 100 m). y. y, M is the distance in metres from headrope to bottom (0 - 100 m). @IIHB2, x. x, M, y. y, M<cr><lf> Trawl Headrope to Footrope and Bottom (Height sensor 2) HB2 represents the distances from the Headrope to the Footrope and Bottom. x. x, M is the distance in metres from headrope to footrope (0 - 100 m). y. y, M is the distance in metres from headrope to bottom (0 - 100 m). @IITDS, x. x, M<cr><lf> Trawl Door Spread 1 TDS represents the Trawl Door Spread 1 distance. x. x, M is the spread distance in metres (0 - 300 m) - if invalid, nullfields will be transmitted - filtered values if sensorfilter is on. @IITS2, x. x, M<cr><lf> Trawl Door Spread 2 TS2 represents the Trawl Door Spread 2 distance. [. . . ] z, M is the target's depth in metres below the surface. nn is the target identification code: 0 means echo target tracked, 10 means position tracked. $--GLL, ddmm. hh, N, dddmm. hh, W*hh<cr><lf> Geographical position -- is the code for the type of system used. -- will be OM if Omega, LC if Loran-C, GP if GPS, DE if decca etc. [. . . ]