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eTrex Vista C
GPS Navigation
The Altimeter Page
You can customize the “View” option displays using the “Zoom
Ranges” option to determine time, distance, pressure, and elevation
parameters. If you know the correct elevation for your location, you
can increase the accuracy of the altimeter using the ‘ Calibrate Altimeter’
option. Use the ‘Reset’ option to clear recorded data from the page and
begin recording new data.
Plot Over Time/Distance
These two measurement options (changes over a set period of time
or changes over a set distance) apply only to the “View Elevation Plot”
option, while the “View Pressure Plot” option is measured by time and
pressure only. When one option is active, the other is displayed on the
Page Options Menu.
View Pressure/Elevation Plots
When selecting the “View Elevation Plot” option, you can plot a profi le
of elevation changes that occur as you navigate over a set distance or
period of time. When you select “View Pressure Plot” you can view a
record of changes in barometric pressure for a set period of time. When
one option is active, the other displays on the Page Options Menu.
To view Elevation or Pressure plots:
1. Use the ROCKER key to highlight the desired option from the
Options Menu and then press in to display the plot.
2. Adjust time and distance measurement as desired using the
Elevation Plot Zoom Ranges explained on following pages.
3. To clear the plot and start again, you must clear the “Track
Log.”
Elevation over Distance
Plot
Pressure over Time Plot
eTrex Vista C Owner's Manual Text.indd 21 8/12/2004, 9:16:32 AM