Garmin GMR 20 - Manual (Page 13)

GMR 20/40 Owner’s Manual 9
GMR 20/40 O
PERATION
> T
HE
R
ADAR
A
DJUSTMENT
M
ENU
Trails
Trails are history trails that show movement of a target. When Trails
is On, all returns on the display leave a history trail. The Trails setting
determines the length of the trail. The Trails setting has four presets:
Off, Short, Medium, and Long.
To change the Trails setting:
1. Using the ARROW KEYPAD, highlight the desired setting.
2. Press the ENTER key to accept the change.
Trails - Off Trails - On (medium)
To clear the Trails, select Clear Trails on the Adjustment Menu or
press the Clear Trails Soft Key.
Guard Zone
A Guard Zone is a user defined area of protection. If a target enters
the defined Guard Zone, an alarm is sounded. Two Guard Zones can
be defined at any given time.
The Guard Zone Menu has two areas, “Guard Zone 1” and “Guard
Zone 2.” Each area has two settings, a setting to Show/Hide the
Guard Zone, and Adjust.
Guard Zone
continued