Garmin 550 Guida Utente

Appendix

Interfaces:  Garmin Proprietary 

serial, USB mass 

storage device, NMEA 

0183

Data Storage Life:  Indefinite; 

no memory 

battery 

required

Map Storage: 

Internal or  

 

microSD Card

Receiver:  more than 12 channel 

WAAS enabled/High 

sensitivity

Acquisition Times:  < 1 second 

(warm start) 

< 33 seconds (cold 

start) 

< 36 seconds 

(autolocate)

Update Rate:  1/second, 

continuous

Compass:  Accuracy: ± 2 degrees 

(± 5 degrees in extreme 

Northern and Southern 

latitudes)

*

 

Resolution: 1 degree

Altimeter:  Accuracy: ± 10 ft. (± 3 

m)* 

Resolution: 1 ft. (.3 m) 

Range: from -2,000 ft. 

to 30,000 ft. (from -610 

to 9144 m)

*

Subject to proper user calibration.

Demo mode turns the GPS receiver 

off for use indoors or for practice. 

The unit does not track satellites in 

Demo mode.