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Trails, Guard zone – Garmin GMR 21 User Manual

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GMR 21/41 Owner’s Manual

9

GMR 21/41 O

PERATION

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T

HE

R

ADAR

A

DJUSTMENT

M

ENU

Trails

When the Trails function is on, all returns on the display leave a

history trail. The Trails setting determines the length of the history

trail. The Trails setting has four presets: Off, Short, Medium, and

Long.

To change the Trails setting:

1. Use the

Rocker to select a new setting.

2. Press

ENTER 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, Show/Hide and Adjust.

Guard Zone

continued

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