3 dimensions, 4 troubleshooting, 1 power – AvMap GeoPilot Plus User Manual

Page 76: 2 gps fix

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15.3 DIMENSIoNS

Fig. 15.4 - Dimensions

15.4 troUBLEShootING

The following is a brief guide to some of the problems you may experience while using the

GEOPILOT with common solutions.

15.4.1 Power

No Power

— The power connections are loose or not fully engaged. Make sure all Power Cable

connections are secure. Make sure the power supply is operating properly. Check the fuse located

at the end of the cigarette plug. (To open unscrew the middle circle at the tip of the adaptor.)

15.4.2 GPS Fix

Position fix doesn’t change

— The signal from one or more satellites has been lost; the positioning

information displayed is the most recent available.

Position fixes vary a lot

— GPS accuracy is affected by several variables, the most prevalent of

which are the geometric quality of the fix. Therefore, the specified accuracy of 15 Meters RMS

in D is statistical, not absolute and assumes the absence of Selective Availability which was

discontinued in April 000.

the GEoPILot is not obtaining position fixes

— If the GEOPILOT is using an internal GPS

Receiver, proceed to the GPS status screen:

>‘MENU’ 1 sec. + “GPS PAGE” + ‘ENT’

Review the number of satellites in use. If zero, check that the antenna has a clear view of the

sky and that the connections have been made properly. If less than four satellites are in use, the

GPS receiver may have difficulty receiving a fix. Try repositioning the antenna. A GPS fix requires

a minimum of three satellites and a poor Signal Quality on one or more satellites may preclude

receiving a position fix.

Verify the user setting for Fix Source is listed as Internal GPS:

> ‘MENU’ 1 sec. + “SYSTEM SETUP” + ‘ENT’ + “FIX SETUP” + ‘ENT’ + “FIX SOURCE”

+ ‘ENT’ + “INTERNAL GPS” + ‘ENT’

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