190-00228-20 GPS 16/17 Technical Specifications Rev. CPage 204.2.13 Sensor Status Information (PGRMT)The Garmin Proprietary sentence $PGRMT gives information concerning the status of the GPS sensor.This sentence is transmitted once per minute regardless of the selected baud rate.$PGRMT,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>*hh<1> Product, model and software version (variable length field, e.g., “GPS 16/17HVS VER 2.05”)<2> ROM checksum test, P = pass, F = fail<3> Receiver failure discrete, P = pass, F = fail<4> Stored data lost, R = retained, L = lost<5> Real time clock lost, R = retained, L = lost<6> Oscillator drift discrete, P = pass, F = excessive drift detected<7> Data collection discrete, C = collecting, null if not collecting<8> GPS sensor temperature in degrees C<9> GPS sensor configuration data, R = retained, L = lost4.2.14 3D Velocity Information (PGRMV)$PGRMV,<1>,<2>,<3>*hh<1> True east velocity, -514.4 to 514.4 meters/second<2> True north velocity, -514.4 to 514.4 meters/second<3> Up velocity, -999.9 to 999.9 meters/second4.2.15 DGPS Beacon Information (PGRMB)Note: PGRMB is not supported at this time.$PGRMB,<1>,<2>,<3>,<4>,<5>,K,<6>,<7>*hh<1> Beacon tune frequency, 0.0, 283.5–325.0 kHz in 0.5 kHz steps<2> Beacon bit rate, 0, 25, 50, 100, or 200 bps<3> Beacon SNR, 0 to 31<4> Beacon data quality, 0 to 100<5> Distance to beacon reference station in kilometers<6> Beacon receiver communication status (0 = Check Wiring, 1 = No Signal, 2 = Tuning, 3 =Receiving, 4= Scanning)<7> DGPS fix source (R = RTCM, W = WAAS, N = Non-DGPS Fix)<8> DGPS mode, A = Automatic, W = WAAS Only, R = RTCM Only, N = None (DGPS disabled)