Garmin G2000 Pilot's Manual page 52

SyStem Overview
Selecting the GPS receiver:
1) From the Home Screen, touch Utilities > GPS Status.
2) Touch the GPS 1 annunciator button to select the #1 GPS receiver. The button annunciator will be green when
selected on. The system displays the GPS 1 STATUS Pane.
3) Touch the GPS 2 annunciator button to select the #2 GPS receiver. The button annunciator will be green when
selected on. The system displays the GPS 2 STATUS Pane.
SATELLITE CONSTELLATION DIAGRAM
Satellites currently in view are shown at their respective positions on a sky view diagram. The sky view is
always in a north-up orientation, with the outer circle representing the horizon, the inner circle representing
45° above the horizon, and the center point showing the position directly overhead.
Each satellite is represented by an oval containing the Pseudo-random noise (PRN) number (i.e., satellite
identification number). Satellites whose signals are currently being used are represented by solid ovals.
SATELLITE SIGNAL STATUS
The accuracy of the aircraft' s GPS fix is calculated using Estimated Position Uncertainty (EPU), Dilution
of Precision (DOP), and horizontal and vertical figures of merit (HFOM and VFOM). EPU is the radius of a
circle centered on an estimated horizontal position in which actual position has 95% probability of laying.
EPU is a statistical error indication and not an actual error measurement.
DOP measures satellite geometry quality (i.e., number of satellites received and where they are relative to
each other) on a range from 0.0 to 9.9, with lower numbers denoting better accuracy. HFOM and VFOM,
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Figure 1-29 GPS Receiver Information
Garmin G2000 Pilot's Guide for the Cessna T240
Satellite Constellation
Diagram
Satellite Signal
Strength Bars
Satellite Signal
Information Status
GPS Receiver
Status
190-01263-01 Rev. A