Eagle Electronics 12 manual PCF Position Correction Factor

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PCF (Position Correction Factor)

Another method used to make your display match a chart or map is called “PCF” or Position Correction Factor. This unit gives you the capability to move or offset the position shown on the display to match one on the chart.The unit will add this offset to all position and navigation displays at all times.

Remember, the position error on any radio navigation system is very dy- namic and the PCF offset should never be used in an attempt to cancel the error.

In general terms, PCF should only be used if your map indicates what the possible error is. PCF should always be reset to zero when you’re finished with the chart.

For example, suppose you are stopped at a location that is accurately marked on a chart. Your unit shows a longitude position that is .244 min- utes east of the one on the chart and .047 minutes north latitude. Using the PCF feature, you can make the AccuMap 12 match the chart you’re using. If you move, the unit will continuously add the change to all posi- tion, navigation, and mapping displays. This makes it more closely match the datum used by the chart. For this reason, you should be careful when entering the PCF offset. It’s saved in memory and doesn’t change when the unit is turned off. However, resetting the unit does erase the PCF offset.

To set the PCF offset, highlight the “Set Position Correction Factor” label on the GPS CORREC- TIONS menu and press the right arrow key. The screen shown at right appears.

Now enter the correction for your location. Remem- ber, this is the difference between the location shown on the present position display and the po- sition shown on the chart. In this example, we en- tered 0 degrees, 0.047 minutes north latitude and 0 degrees, 0.244 minutes east longitude. That is the difference between the present position shown by the AccuMap 12 and the one on our chart.

After you’ve entered the latitude/longitude correc- tion, press the ENT key to accept it. The AccuMap 12 returns to the navigation or mapping screens with the correction factor applied.

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Contents AccuMap Never use this product while operating a vehicle Introduction HOW to Obtain Service International Inside Back Cover Introduction Installation Battery Installation Antenna MAP Cartridge Installation Keyboard Removing a CartridgeCold Start Turning Power OnMenus Enter by Map InitializationPage Enter Manually Navigation Mapping Windows Nav Screen #1 Navigation ScreensNav Screen #2 Mapping Map Cursor Autozoom Map Boundaries Earth MAP OptionsText Labels MAP Options Earth Map On/OffIcons On/Off Detail CartridgeMap Orientation Navionics OptionsFill With Gray NORTH-UP TRACK-UP Set Visible Plot Trails Plotter OptionsPlot Trail Plot Trail FlashingSave Current Plot Trail Set Plotter Update CriteriaPlace Icon Cursor Location IconsPlace Icon Present Position Windows Erase IconsDual Mapping Special WindowsClock Set ClockClock Hours Clock AlarmTimers Reprogram Boxes Reprogramming Boxes Saving The Cursor Position as a Waypoint Waypoint DatabaseSaving Cursor Position as a Waypoint Select Number Method Waypoint Names Edit Lat/LonMove a Waypoint Waypoint IconsDelete a Waypoint Distance Between Waypoints Routes Waypoint OptionsSelect Waypoints Waypoint list Finishing the Route Select Waypoints From MapFollowing a Route Navigate To a Waypoint Delete a RouteNavigating to a cursor location Navigating to a Waypoint using the MapTrack Holding Cancel NavigationSystem Setup GPS Corrections Datum PCF Position Correction Factor Position Format Units of MeasureMagnetic , true Hour a.m.-p.m. , 24 hourNmea 0183 Output Nmea / DgpsDgps Configure Nmea OutputNmea 0183 Version Nmea Sentence SelectionAccumap Transmitting Nmea Data To Another Device System Info Serial Communications SetupReset Options Reset BoxesName GPS SetupExecute GPS Cold Start GPS Update RateExecute GPS Self Test Important Alarm Notes AlarmsBacklight MessagesSimulator ContrastSpeaker Use Arrow Keys to Steer Starting PositionDefinition of TERMS/ABBREVIATIONS BatteriesWindow Boxes Page Window Groups MNO PQR Return Authorization RA Number Eagles UPS Return Service U.S.A. OnlyAccessory Ordering Information Eagle Electronics Eagle Electronics Full ONE-YEAR WarrantyDatabases License Agreement Databases Limited Warranty How to Obtain Service Canadian Customers Only How to Obtain Service U.S.A. Only

12 specifications

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