2
Insert the memory card into a card reader attached to a
computer.
3
Open the HomePort application.
4
Select a sonar recording from your device list.
5
Right-click the sonar recording in the lower pane.
6
Select
Playback
.
Radar
WARNING
The marine radar transmits microwave energy that has the
potential to be harmful to humans and animals. Before
beginning radar transmission, verify that the area around the
radar is clear. The radar transmits a beam approximately 12°
above and below a line extending horizontally from the center of
the radar.
When the radar is transmitting, do not look directly at the
antenna at close range; eyes are the most sensitive part of the
body to electromagnetic energy.
NOTE:
Not all models support radar.
When you connect your compatible chartplotter to an optional
Garmin marine radar, such as a GMR
™
1226 xHD2 or a GMR 24
HD, you can view more information about your surroundings.
The GMR transmits a narrow beam of microwave energy as it
rotates to a 360° pattern. When the transmitted energy contacts
a target, some of that energy is reflected back to the radar.
Radar Display Modes
NOTE:
Not all modes are available with all radar devices and all
chartplotters.
Select Radar.
Cruising Mode
: Shows a full-screen image of the gathered
radar information.
Harbor Mode
: Intended for use in inland waters, this mode
works best with short-range signals (2 nm or less).
Offshore Mode
: Intended for use in open waters, this mode
works best with long-range signals.
Sentry Mode
: Allows you to put the radar into timed-transmit
mode, in which you can configure a radar transmit and
standby cycle to conserve power. You can also enable a
guard zone in this mode, which identifies a safe zone around
your boat. If you switch from Sentry mode to another mode,
the radar switches to full-time transmission and disables all
guard zones.
Radar Overlay Mode
: Shows a full-screen image of the
gathered radar information on top of the Navigation chart.
The Radar overlay displays data based on the most recently
used radar mode.
Dual Range Mode
: Provides a side-by-side view of both short-
range and long-range radar data.
Changing the Radar Mode
1
From a combination screen or SmartMode layout with radar,
select
Menu
>
Radar Menu
>
Change Radar
.
2
Select a radar mode.
Transmitting Radar Signals
NOTE:
As a safety feature, the radar enters standby mode after
it warms up. This gives you an opportunity to verify the area
around the radar is clear before beginning radar transmission.
1
With the chartplotter off, connect your radar as described in
the radar installation instructions.
2
Turn on the chartplotter.
The radar warms up and a countdown alerts you when the
radar is ready.
3
Select
Radar
.
4
Select a radar mode.
A countdown message appears while the radar is starting up.
5
Select
Menu
>
Transmit Radar
.
Adjusting the Radar Range
The range of the radar signal indicates the length of the pulsed
signal transmitted and received by the radar. As the range
increases, the radar transmits longer pulses in order to reach
distant targets. Closer targets, especially rain and waves, also
reflect the longer pulses, which can add noise to the Radar
screen. Viewing information about longer-range targets can also
decrease the amount of space available on the Radar screen for
viewing information about shorter-range targets.
• Select to decrease the range.
• Select to increase the range.
Tips for Selecting a Radar Range
• Determine what information you need to see on the Radar
screen.
For example, do you need information about nearby weather
conditions or targets and traffic, or are you more concerned
about distant weather conditions?
• Assess the environmental conditions where the radar is being
used.
Especially in inclement weather, longer-range radar signals
can increase the clutter on the Radar screen and make it
more difficult to view information about shorter-range targets.
In rain, shorter-range radar signals can enable you to view
information about nearby objects more effectively, if the rain
clutter setting is configured optimally.
• Select the shortest effective range, given your reason for
using radar and the present environmental conditions.
Zooming In and Out of the Radar Screen
• Pinch two fingers together to zoom out.
• Spread two fingers apart to zoom in.
• Drag the screen to pan, and then select or to zoom, if
necessary.
Marking a Waypoint on the Radar Screen
1
From a Radar screen or the Radar overlay, select a location.
2
Select
Create Waypoint
.
Sentry Mode
Sentry mode allows you to put the radar into timed-transmit
mode, in which you can configure a radar transmit and standby
cycle to conserve power. You can also enable a guard zone in
this mode, which identifies a safe zone around your boat and
sounds an alarm when a radar object enters the zone. Sentry
mode works with all Garmin GMR model radars.
Enabling Timed Transmit
Select
Radar
>
Sentry
>
Menu
>
Sentry Setup
>
Timed
Transmit
>
On
.
Setting the Standby and Transmit Times
Before you can set the standby and transmit times, you
must enable timed transmit (Enabling Timed Transmit).
To help conserve power, you can indicate the radar standby
time and the transmit time to implement periodic radar signal
transmissions at set intervals.
1
From the sentry screen, select
Menu
>
Sentry Setup
.
2
Select
Stdby Time
.
Radar
21