Garmin eTrex Summit Owner's Manual And Reference Manual page 52

Reference
System Page
Turn the GPS receiver off to
conserve power when using as
a compass or developing a
pressure trend.
When the unit is in 'DEMO'
mode, a warning will appear
indicating that the GPS
receiver is turned off.
50
System Page
The System Page shows you the current GPS mode,
Compass mode, Altimeter 'Auto Cal' mode, and Software
Version. You can choose from four modes of GPS
operation:
• Normal
• Battery Save
• Demo (Demonstration)
• Off
Normal Mode
The GPS receiver is turned on all the time when it' s in
'NORMAL' mode. The normal mode is more sensitive to
sudden turns or change of speed/acceleration.
Battery Save
When the eTrex Summit is in 'BATTERY SAVE' mode,
the GPS receiver is optimized conserve power.
Demo Mode
The 'DEMO' mode is designed for dealers to show the
features and functions of the eTrex Summit to potential
customers inside a closed building where satellite
reception is not possible. There is no navigation possible
in 'DEMO' mode.
If you select the 'DEMO' mode, a window appears at the
bottom of the screen asking you to verify that you want to
turn the GPS off (the unit will stop tracking satellites, not
power off). To do so, press ENTER.
Turning the GPS Receiver 'Off'
Turning the GPS receiver 'OFF' will conserve battery
power if you want to use the eTrex Summit as a compass
or develop a 'Pressure Trend' on the Elevation Page.
UA-1005.052