Press letter button next to Position Receiver or STARFIRE Receiver.

This screen shows the information and status of the incoming GPS and differential correction signal. No information on this screen can be changed. It is for viewing only.

This cell shows date and time for Greenwich Mean time.

This cell displays vehicle location coordinates with respect to Equator (north or south).

This cell shows vehicle location coordinates with respect to Prime Meridian (east or west).

This cell shows height of vehicle in meters (feet) above sea level.

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NOTE: The course and speed normally show small speeds and various courses when the vehicle in not moving.

This cell displays direction of travel, in degrees, relative to true north (zero degrees) as measured by the receiver. Angle is measured in clockwise direction.

This cell shows ground speed of vehicle in kilometers per hour (mile per hour) as measured by the receiver.

This cell shows status of GPS signal: 2-D (two dimensional with latitude and longitude of vehicle) or 3-D (three dimensional with altitude, latitude, and longitude of vehicle).

This cell also shows status of differential signal: SF1 (SFire 1 differential), and SF2 (SFire 2 differential).

This cell shows the age of the differential correction signal to the GPS (normally less than 10 seconds).

This cell shows the angle above the horizon below which GPS satellites are not used for positioning. Low

This cell displays number of satellites being tracked by the GPS receiver above defined mask.

This cell shows number of satellites actively used to compute position.

This cell shows precision of GPS position signal. Precision of signal is affected by geometry of satellites being used.

NOTE: Smaller numbers are better.

• PDOP - position dilution of precision
• HDOP - horizontal dilution precision
• VDOP - vertical dilution of precision

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