Garmin GPS 20x Technical Specifications

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Garmin GPS 20x Technical Specifications Manual pdf 6 page image

190-00880-00 GPS 20x Technical Specifications Rev. APage 31.3 OVERVIEWThe GPS 20x includes an embedded receiver and an antenna. The GPS 20x tracks multiple satellites at a time whileproviding fast time-to-first-fix navigation updates once per second. This generation of GPS sensors includes thecapability of FAA Wide Area Augmentation System (WAAS) differential GPS.The GPS 20x design uses the latest technology and high-level circuit integration to achieve superior performancewhile minimizing space and power requirements. The hardware capability combined with software intelligencemakes the GPS 20x easy to integrate and use.The GPS 20x requires minimal additional components to be supplied by an OEM or system integrator. A minimumsystem must provide the GPS with a source of power and a clear view of the GPS satellites. Internal FLASHmemory allows the GPS to retain critical data such as satellite orbital parameters, last-known position, date andtime. End user interfaces such as keyboards and displays are the responsibility of the application designer.The GPS 20x interfaces to a computer with an available USB port. Drivers are available for use on Windows ®computers. Macintosh ® and Linux drivers are not available from Garmin. After the drivers are loaded, the deviceappears to the Windows operating system as a USB-connected device and appears in Device Manager as a GarminUSB Device.1.4 FEATURES• GPS receiver tracks and uses multiple satellites for fast, accurate positioning and velocity estimates.• Differential DGPS capability using real-time WAAS corrections yields position errors of less than 3meters.• Compact design is ideal for applications with minimal space.• Binary format data output over the USB interface transmits packets once per second. Refer to Appendix B:Garmin Binary Output Format.• Downloadable Spanner application allows the GPS 20x to output NMEA 0183 sentences. Refer to section3.1 Transmitted NMEA 0183 Sentences.• FLASH-based program allows new software revisions through a Web site download.• Non-volatile memory does not require battery backup.• Onboard rechargeable backup battery can maintain the real-time clock for up to 10 days.• Configurable parameters include expected position, current time and date, and preferred position fix type(3D or automatic).