Garmin GPS 25 LP Technical Specification

Garmin GPS 25 LP Technical Specification Manual pdf 27 page image

23<6> GPS quality indication, 0 = fix not available, 1 = Non-differential GPS fixavailable, 2 = Differential GPS (DGPS) fix available, 6 = Estimated<7> Number of satellites in use, 00 to 12 (leading zeros will be transmitted)<8> Horizontal dilution of precision, 0.5 to 99.9<9> Antenna height above/below mean sea level, -9999.9 to 99999.9 meters<10> Geoidal height, -999.9 to 9999.9 meters<11> Differential GPS (RTCM SC-104) data age, number of seconds since last validRTCM transmission (null if non-DGPS)<12> Differential Reference Station ID, 0000 to 1023 (leading zeros will betransmitted, null if non-DGPS)4.2.5 GPS DOP and Active Satellites (GSA)$GPGSA,<1>,<2>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<4>,<5>,<6>*hh<1> Mode, M = manual, A = automatic<2> Fix type, 1 = not available, 2 = 2D, 3 = 3D<3> PRN number, 01 to 32, of satellite used in solution, up to 12 transmitted (leadingzeros will be transmitted)<4> Position dilution of precision, 0.5 to 99.9<5> Horizontal dilution of precision, 0.5 to 99.9<6> Vertical dilution of precision, 0.5 to 99.94.2.6 GPS Satellites in View (GSV)$GPGSV,<1>,<2>,<3>,<4>,<5>,<6>,<7>,...<4>,<5>,<6>,<7>*hh<1> Total number of GSV sentences to be transmitted<2> Number of current GSV sentence<3> Total number of satellites in view, 00 to 12 (leading zeros will be transmitted)<4> Satellite PRN number, 01 to 32 (leading zeros will be transmitted)<5> Satellite elevation, 00 to 90 degrees (leading zeros will be transmitted)<6> Satellite azimuth, 000 to 359 degrees, true (leading zeros will be transmitted)<7> Signal to noise ratio (C/No) 00 to 99 dB, null when not tracking (leading zeroswill be transmitted)NOTE: Items <4>,<5>,<6> and <7> repeat for each satellite in view to a maximum offour (4) satellites per sentence. Additional satellites in view information must besent in subsequent sentences. These fields will be null if unused.