Garmin GPS 35 LP Technical Specification

Also see for GPS 35 LP: Declaration of conformity Quick start guide Technical specification

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Garmin GPS 35 LP Technical Specification Manual pdf 12 page image

7the GPS 35/36 to choose a specific mode of navigation,such as 2D. The following modes are available:1) 2D exclusively with altitude supplied by the hostsystem (altitude hold mode)2) 3D exclusively with altitude computed by the GPS 35/363) Automatic mode in which the board set determinesthe desired mode based on satellite availability andgeometry considerationsWhen navigating in the 2D mode (either exclusive orautomatic), the GPS 35/36 utilizes the last computed altitudeor the last altitude supplied by the host system, whicheveris newer. The host system must ensure that the altitudeused for 2D navigation is accurate since the resultingposition error may be as large as the altitude error. SeeSection 4 for more information on altitude control.The GPS 35/36 will default to automatic differentialcorrections, attempting to apply them to the satellite data, inorder to produce a differential (DGPS) solution. The hostsystem, at its option, may also command the GPS 35/36 tochoose differential only mode. When navigating in thedifferential only mode, the GPS 35/36 will output a positiononly when a differential solution is available.2.4 SATELLITE DATA COLLECTIONThe GPS 35/36 will automatically update satellite orbitaldata as it operates. The intelligence of the GPS 35/36combined with its hardware capability allows these data tobe collected and stored without intervention from the hostsystem. A few key points should be considered regardingthis process:1) If the GPS 35/36 is not operated for a period of six (6)months or more, the unit will “search the sky” in orderto collect satellite orbital information. This process is