Garmin GPS III A Owner's Manual

Also see for GPS III: Declaration of conformity Quick guide Owner's manual Owner's manual

Garmin GPS III A Owner's Manual Manual pdf 33 page image

The GPS III’s Satellite Status Page provides a visual reference of various receiverfunctions, including current satellite coverage, receiver operating mode, battery leveland position accuracy. As the receiver locks onto satellites, a signal strength bar willappear for each satellite in view, with the appropriate satellite number (01-32) under-neath each bar. The progress of satellite acquisition is shown in three stages:• No signal strength bars— the receiver is looking for the satellites indicated.• Hollow signal strength bars— the receiver has found the satellite(s) and iscollecting data.• Solid signal strength bars— the receiver has collected the necessary data andthe satellite(s) is ready for use.Each satellite has a 30-second data transmission that must be collected (hollow barstatus) before that satellite may be used for navigation (solid bar status). Once a fix hasbeen calculated, the GPS III will then update your position, track, and speed by select-ing and using the best satellites in view. You can also access the GPS III’s contrast fea-ture from this page.To adjust the screen contrast:1. Press LEFT or RIGHT on the rocker keypad to adjust the level of contrast, and pressENTER to save the new contrast setting.Sky View and Signal Strength BarsThe sky view and signal strength bars give you an indication of what satellites arevisible to the receiver, whether or not they are being used to calculate a position fix,and the signal quality. The satellite sky view shows a bird’s-eye view of the position ofeach available satellite relative to the unit’s last known position. The outer circle rep-resents the horizon (north up); the inner circle 45º above the horizon; and the centerpoint directly overhead.The Satellite Status Pageshows where the satellites areand how strong the signal isfrom each one. A solid signalbar means the satellite isready to use.Use the LEFT/RIGHT keys onthe rocker keypad to adjustthe screen contrast. PressENTER to save the setting.25REFERENCESatellite Status Page