Garmin GPS 15L Technical Specifications

Contents

Garmin GPS 15L Technical Specifications Manual pdf 10 page image

190-00266-01 GPS 15H & 15L Technical Specifications Rev. DPage 6•••••1.5.5 Interfaces1.5.5.1 GPS 15H & 15L Electrical CharacteristicsTrue RS-232 output (Port 2 output not used at time of publication), asynchronous serial inputcompatible with RS-232 or TTL voltage levels, RS-232 polarity.User selectable NMEA 0183 baud rate (300, 600, 1200, 2400, 4800, 9600, 19200, 38400). Factorysetting is 4800 baud.1.5.5.2 Port 1 ProtocolsConfigurable between NMEA 0183 Versions 2.00 and 3.00.ASCII output sentences: GPALM, GPGGA, GPGLL, GPGSA, GPGSV, GPRMC, and GPVTG(NMEA-approved sentences); and PGRMB, PGRME, PGRMF, PGRMM, PGRMT, and PGRMV(Garmin proprietary sentences).NMEA 0183 Outputs (see section 4.2 for full protocol specifications)Position, velocity and timeReceiver and satellite statusDifferential Reference Station ID and RTCM Data ageGeometry and error estimates• NMEA 0183 Inputs (see section 4.1 for full protocol specifications)Initial position, date and time (not required)Earth datum and differential mode configuration command, PPS Enable, GPS satellite almanac• Configurable for binary data output including GPS carrier phase data1.5.5.3 Port 2 ProtocolsReal-time Differential Correction input (RTCM SC-104 message types 1, 2, 3, 7, and 9)1.5.5.4 PPS1 Hz pulse, programmable width, 1 μs accuracy1.5.6 Antenna SpecificationsShould be an active antenna with the following specifications:Gain: Antenna should provide between 10 dB to 30 dB net gain between theantenna feed point and the connection to the GPS 15H & 15L. Consider allamplifier gains, filter losses, cable losses, etc. when calculating the gain.RF Connection: GPS 15H & 15L RF Connection: MCX Female connector (on the GPS15H & 15L board).Antenna Connection: MCX Male connector (on the end of the antennacable).Garmin Antenna: GPS 27C (Garmin Part Number 010-10052-05) provides the requiredMCX Male connector. Other Garmin antennas terminated in a BNC Maleconnector may also be used if a Garmin MCX to BNC Adapter Cable(Garmin Part Number 010-10121-00) is used. Place the MCX to BNCAdapter Cable between the connector on the end of the antenna cable andthe connector on the GPS 15H & 15L.