Uniden UM425 English Owners Manual - Page 71

Specifications NMEA Operation This radio supports NMEA0183 version 3.01. NMEA Input If you have difficulty getting the UM425 to receive data from your GPS receiver, check the device's configuration. It should be set to the parameters shown in Table 16. Table 16 - NMEA Input Parameters Baud rate 4800 bps The radio supports RMC, GLL, GNS, GGA and ZDA sentences. When Data bits 8 these sentences are received, the Parity None radio displays latitude/longitude, Stop bits 1 Data amplitude Over 3.0 V date, time, course, and speed. If any sentence except an RMC or GLL sentence is received, the radio Drive capability Over 10 mA uses the information based on the following priority order. • Status:RMC > GLL > GNS > GGA • Latitude/Longitude:RMC > GLL > GNS > GGA • UTC Time: RMC > GLL > GNS > GGA > ZDA • Date: RMC > ZDA • Speed / Course:RMC NOTES : • If the radio receives only a GLL sentence, the radio does not display the current speed, course, and date. • If the radio receives both RMC and GLL sentences, the radio uses only the RMC sentence. • Status data is used to check whether the GPS data is valid or invalid. NMEA Output When the radio receives a DSC call (Distress, Position Reply, or Position Send), it outputs a DSC/DSE sentence from the NMEA output port. NOTE: When the radio receives a distress call, it outputs a sentence in the following format. • $CDDSC,12,3081234000,,07,00,0354013946,0657,,,S,E*6D • $CDDSE,1,1,A,3081234000,00,60875646*13 E-67