Garmin GPSMAP 130 Owner's Manual And Reference Manual

Also see for GPSMAP 130: Owner's manual

A BReceiver Status, EPE & DOPReceiver status is indicated at the top of the page, with the current estimatedposition error (EPE) and dilution of precision (DOP) to the left of the sky view.DOP is an indication of satellite geometry quality measured on a scale of one toten (lowest numbers the best, highest numbers the poorest). EPE uses DOP andother factors to calculate a horizontal position error in feet or meters. The statusfield will show one of the following conditions:• Searching the Sky— the receiver is looking for any satellites.• AutoLocate— the receiver is is looking for any satellite whose almanac has been col-lected. This process can take up to five minutes.• Acquiring Satellites— the receiver is looking for and collecting data from satellitesvisible at its last known or initialized position, but has not collected enough data tocalculate fix.• 2D Navigation— at least three satellites with good geometry have been acquired anda 2 dimensional position fix (latitude and longitude) is being calculated. ‘2DDifferential Navigation’ will appear when you are receiving DGPS corrections in2D mode.• 3D Navigation— at least four satellites with good geometry have been acquired andyour position is now being calculated in latitude, longitude and altitude. ‘3DDifferential Navigation’ will appear when you are receiving DGPS corrections in3D mode.• Poor GPS Coverage— the receiver is no longer tracking enough satellites for a 2Dor 3D fix.• Receiver Not Usable— the receiver is unusable, possibly due to incorrect initializa-tion or abnormal satellite conditions. Turn the unit off and back on to reset.• Simulating Navigation— the receiver is in simulator mode.18A. The status bar at the bottom of the page displaysimportant status, alarm and map scale informa-tion. It also provides on-screen user and messageprompts.B. The status bar will display an anchor symbol or‘PRX’ icon whenever the anchor drag alarm orproximity alarm has been triggered.SECTION1 STATUS PAGEReceiver Status