10 Version 2.0Operator’s Manual Keypad & Display DescriptionYellow SolidDGPS position update with poor HDOP value. You may see this fromtime to time during normal operation. It usually occurs when you aretracking 3, 4, or 5 satellites, and the satellites have poor geometryrelative to your position. The condition will normally go back to GreenSolid when it picks up another satellite or the geometry of the existingsatellites improves. The factory default level for this indication is withan HDOP of 4 to 10. During this period, your positioning information isless than optimal, and position accuracy may be off by as much as 5 to10 meters. You can press the GPS function key and refer to the GPSsection in this manual for guidance if this light condition occurs.Green SolidDGPS position update with HDOP value less than 4. This is thenormal operating condition. Position accuracy is normally better than3 meters. Keep in mind that position accuracy is always only as goodas the corrections received, their age, your distance from the referencestation, and the geometry of the satellites. This is the normal operatingcondition and no icon will be displayed.GPS Traffic Light Operation:Red FlashingNot tracking satellites (no position update). This is normal for thefirst 2 minutes or so when turning the unit on. The very first time youturn the unit on, or if the memory is reset or lost, this condition is alsonormal. Allow the receiver to run for at least 30 minutes under thesecircumstances. If it still does not change to Red Solid, refer to thetroubleshooting section of the Installation & Service Manual. Anicon similar to the one at left will be displayed in the upper left cornerof the screen.Red/Yellow SolidDead Reckoning . When normal GPS or DGPS operation is not avail-able, this LED sequence is provided to quickly identify the DR naviga-tion mode. A DR indicator is also displayed on all screens in the upperleft hand corner of the display.Red SolidTracking one or more satellites (no position update). This is alsonormal for the first 2 minutes or so when turning the unit on. The veryfirst time you turn the unit on, allow the receiver to run for at least 20
