Garmin gmr 20 Manuale Utente

The Range Rings are used as an aid to quickly determine distance to 

a target. In the lower right corner of the display are two scales. The 

upper scale is the current zoom scale. This scale is changed using the 

RANGE keys. The Zoom Scale is represented by the Range Ring 

with tick marks around the circumference. The tick marks are arrange 

with a minor tick marks every five degrees and major tick marks 

at thirty-degree increments. These tick marks can aid in quickly 

determining the azimuth to a target. The lower scale represents the 

distance between the Range Rings. 

The Heading Line is shown from your current position along the path 

of your current heading.

By default, the Radar page shows one column of digital navigation 

data with four data fields. The Radar page can be configured to show 

two columns of data with up to seven data fields each. Each data field 

can be configured to show a variety of data. 

 GMR 20/40 O

PERATION

 > 

R

ANGE

 R

INGS

—H

EADING

 L

INE

—D

IGITAL

 N

AVIGATION

 D

ATA