Satellite Settings
Select Setup > System > Satellite.
NOTE: Some settings may not be available for all device models.
Satellite System: Sets the satellite system to GPS only, multiple satellite systems, or Demo Mode (GPS off).
WAAS/EGNOS: Enables the system to use Wide Area Augmentation System/European Geostationary
Navigation Overlay Service (WAAS/EGNOS) data.
Multi-Band: Enables the use of multi-band systems on the GPSMAP 66sr device.
NOTE: Multi-band systems use multiple frequency bands and allow for more consistent track logs and
improved positioning when using the device in challenging environments.
GPS and Other Satellite Systems
Using GPS and another satellite system together offers increased performance in challenging environments
and faster position acquisition than using GPS only. However, using multiple systems can reduce battery life
more quickly than using GPS only.
Your device can use these Global Navigation Satellite Systems (GNSS). Multi-band systems use multiple
frequency bands and allow for more consistent track logs, improved positioning, improved multi-path errors,
and fewer atmospheric errors when using the device in challenging environments. Some satellite systems may
not be available for all device models.
NOTE: You can view satellite locations and available satellite systems on the satellite page (Satellite Page,
page 26).
GPS: A satellite constellation built by the United States.
GPS multi-band: A satellite constellation built by the United States, using the enhanced L5 signal.
GLONASS: A satellite constellation built by Russia.
GALILEO: A satellite constellation built by the European Space Agency.
GALILEO multi-band: A satellite constellation built by the European Space Agency, using the enhanced L5
signal.
QZSS multi-band: A satellite constellation built by Japan, using the enhanced L5 signal.
IRNSS (NavIC): A satellite constellation built by India, using the enhanced L5 signal.
Serial Interface Settings
Select Setup > System > Interface.
Garmin Spanner: Allows you to use the device USB port with most NMEA 0183-compliant mapping programs
by creating a virtual serial port.
Garmin Serial: Sets the device to use a Garmin proprietary format to exchange waypoint, route, and track data
with a computer.
NMEA In/Out: Sets the device to use standard NMEA 0183 output and input.
Text Out: Provides simple ASCII text output of location and velocity information.
MTP: Sets the device to use Media Transfer Protocol (MTP) to access the file system on the device instead of
mass storage mode.
Display Settings
Select Setup > Display.
Backlight Timeout: Adjusts the length of time before the backlight turns off.
Battery Save: Saves the battery power and prolongs the battery life by turning off the screen when the backlight
times out.
Appearance: Changes the appearance of the display background and selection highlight (Changing the Color
Mode, page 29).
Screen Capture: Allows you to save the image on the device screen.
Review Text Size: Changes the size of the text on the screen.
28 Customizing the Device
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