Panasonic CN-DV2300N Operating Instructions Manual

Also see for CN-DV2300N: Brochure & specs Service manual

Panasonic CN-DV2300N Operating Instructions Manual Manual pdf 33 page image

33●If you are using the system for the first time, or if you have not used it for some time, ittakes about 5 minutes (or about 2 minutes in open areas) to calculate your vehicle'sposition.●The GPS satellites are controlled by the U.S. Defense Department, which may intentionallylower positioning accuracy. In such cases, there may be vehicle position deviations.●There may be vehicle position deviations for some time until GPS signals are received afterturning on the ignition.■GPS signal reception is poor in the following placesIn tunnels Among high-rise buildings Under elevated roads In wooded areasGPSMap MatchingThis function compares your vehicle's tracking data with the road data on the mapdisc, applies dead reckoning to determine the road you are driving on,and displays your vehicle on that road on the map.●Intelligent map matching addresses the following problems to achieve high accuracyin vehicle positioning.Position Correction for Elevated RoadsPosition accuracy is improved by detecting ifthe vehicle is running on or under an elevated road.●Using a spare tyre in place of the regular one may cause vehicle position deviations.●Any difference between the direction which your vehicle actually travels and that shownon the map is automatically eliminated by azimuth correction.GPS is a position detecting system utilizing the signals fromGPS satellites deployed by the U.S. Department of Defense.The Mobile Navigation System uses input from three or moresatellites and calculates the vehicle position based on theprinciple of triangulation.The positioning accuracy of the system corresponds to theerror display of the GPS which is from about 30 to 200 meters.Position Correction for Parking GaragesPosition accuracy is improved by detecting if thevehicle is driving in an elevated or underground parking garage.High-precision GyrosensorA gyro detects turns with an accuracy of 0.05° per second.Combined with a speed sensor, it enables the system to displaythe current vehicle position even where GPS signals may beblocked.As necessary32