Nokia 6790 User Giude

Also see for 6790: User guide

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Nokia 6790 User Giude Manual pdf 28 page image

GPS receiver and cellular radio networks for positioning ornavigation.The trip meter has limited accuracy, and rounding errors mayoccur. Accuracy can also be affected by availability and qualityof GPS signals.Different positioning methods can be enabled or disabled inpositioning settings.Assisted GPS (A-GPS)Your device also supports assisted GPS (A-GPS).A-GPS requires network support.Assisted GPS (A-GPS) is used to retrieve assistance data overa packet data connection, which assists in calculating thecoordinates of your current location when your device isreceiving signals from satellites.When you activate A-GPS, your device receives useful satelliteinformation from an assistance data server over the cellularnetwork. With the help of assisted data, your device canobtain the GPS position faster.Your device is preconfigured to use the Nokia A-GPS service,if no service provider-specific A-GPS settings are available.The assistance data is retrieved from the Nokia A-GPS serviceserver only when needed.To disable the A-GPS service, select > Applications >GPS data and Options > Positioning settings >Positioning methods > Assisted GPS > Disable.You must have an internet access point defined in the deviceto retrieve assistance data from the Nokia A-GPS service overa packet data connection. The access point for A-GPS can bedefined in positioning settings. Only a packet data internetaccess point can be used. Your device asks you to select theinternet access point when GPS is used for the first time.Hold your device correctlyWhen using the GPS receiver, ensure you do not cover theantenna with your hand.Establishing a GPS connection may take froma couple of seconds to several minutes.Establishing a GPS connection in a vehiclemay take longer.The GPS receiver draws its power from thedevice battery. Using the GPS receiver maydrain the battery faster.Tips on creating a GPS connectionCheck satellite signal statusTo check how many satellites your device has found, andwhether your device is receiving satellite signals, select >Applications and GPS data > Position > Options >Satellite status.If your device has found satellites,a bar for each satellite is shown inthe satellite info view. The longerthe bar, the stronger the satellitesignal. When your device hasreceived enough data from thesatellite signal to calculate the coordinates of your location,the bar turns blue.© 2004 Nokia. All rights reserved.28