Garmin GMR 20 - Manual (Page 16)

GMR 20/40 O
PERATION
> T
HE
R
ADAR
A
DJUSTMENT
M
ENU
While a target is being designated, a box is placed around the target.
When MARPA begins tracking the target, the box is replaced with the
appropriate symbol.
Acquiring Target Tracking Target
To display the MARPA List:
Using the ARROW KEYPAD, highlight MARPA List and press
the ENTER key.
MARPA List
MARPA Setup
The MARPA Setup Menu contains settings for Vector Length, Target
History, Own Vessel Safe Zone, Tine To Safe Zone, Safe Ring Zone,
and Velocity Reference.
To display the MARPA Setup Menu:
Using the ARROW KEYPAD, highlight MARPA Setup and
press the ENTER key.
12 GMR 20/40 Owner’s