Altimeter and Barometric Readings
The altimeter and barometer function differently depending on the fixed or variable settings. For information about calibrating the barometric altimeter, see Calibrating the Barometric Altimeter. For information about tracking weather changes, see Tracking Weather Changes Overnight.
You can adjust the altimeter and barometric settings by selecting .
|
Sensor |
Fixed |
Variable |
|---|---|---|
|
Altimeter with GPS On |
Elevation is equal to GPS elevation. |
Elevation reflects changes in ambient pressure and GPS position. |
|
Barometer with GPS On |
Barometric pressure reading reflects changes in ambient pressure and changes in GPS position. Using the barometer at a constant altitude results in accurate readings. |
Barometric pressure reading reflects changes in ambient pressure and changes in GPS position. |
|
Altimeter with GPS Off |
Elevation remains constant. |
Elevation reflects changes in ambient pressure. |
|
Barometer with GPS Off |
Barometric pressure reading reflects changes in ambient pressure. Using the barometer at a constant altitude results in accurate readings. |
Barometric pressure reading is based on the calibrated altitude and changes in ambient pressure. |