Bonjour, j'ai un GPS de type souris sur port USB qui marche très bien avec MapSource en navigation terrestre, mais que je n'arrive pas à faire fonctionner avec Maxsea. En fait je n'arrive pas à recevoir de position, j'obtiens un COG et une SOG mais pas de position. Quelqu'un aurait il une idée sur le problème ??? Je joints les caractéristiques du GPS Merci d'avance System Specification Electrical Characteristics (Receiver) Frequency L1, 1575.42 MHz C/A Code 1.023 MHz chip rate Channels 12 Sensitivity -170 dBW Accuracy Position Horizontal 15m 2D RMS (SA off) Velocity 0.1m/sec 95% (SA off), Time 1 micro-second synchronized to GPS time WAAS enabled 10m 2D RMS Datum Datum WGS-84 Acquisition Rate Hot start 8 sec., average (with ephemeris and almanac valid) Warm start 38 sec., average (with almanac but not ephemeris) Cold start 45 sec., average (neither almanac nor ephemeris) Reacquisition 0.1 sec. average (interruption recovery time) Protocol GPS Protocol Default: NMEA 0183 (Secondary: SiRF binary) GPS Output Data SiRF binary >> position, velocity, altitude, status and control NMEA 0183 MEA0183 V2.2 protocol, and supports command: GGA, GSA, GSV, RMC, VTG, GLL v2.2 (VTG and GLL are optional) GPS transfer rate Software command setting (Default : 4800,n,8,1 for NMEA ) Dynamic Condition Acceleration Limit Less than 4g Altitude Limit 18,000 meters (60,000 feet) max. Velocity Limit 515 meters/sec. (1,000 knots) max. Jerk Limit 20 m/sec**3 Temperature Operating -30°~ 80°C Storage -40°~ 85°C Humidity Up to 95% non-condensing Power Voltage 5V ±5% Current 90mA typical Physical Characteristics Dimension 2.32" x 1.85" x 0.82" (59mm x 47mm x 21mm) USB Cable Length 65" Low Noise Amp Amplifier Gain w/out cable 27 dB Typical Filtering -25dB (+100 MHz) Output VSWR 2.0 Max. Voltage DC 3 ~ 5.0V Current 15mA max.@5VDC