Garmin GPSMAP 640, Руководство пользователя

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GPSMAP 640 Owner’s Manual 4
Marine Mode: Using XM WX Weather and Audio
Marine Mode: Using XM WX Weather
and Audio
To use XM WX Satellite Weather on your GPSMAP 640, you
must connect a Garmin GXM 40 XM antenna and activate an XM
WX weather subscription. To use XM Radio, you must connect
a Garmin GXM 40 XM antenna and activate an XM WX Radio
subscription.
Notes:
• XM service is available only in the lower 48 United States and
southern Canada.
• You must purchase and activate your XM service before you
can use the XM features.
Using XM WX Weather
The GXM 40 receives XM WX Weather data and shows it on the
Navigation chart and other screens throughout the device in marine
mode. The weather data for each feature comes from reputable
weather data centers such as the National Weather Service and the
Hydrometerological Prediction Center. (See the XM WX Satellite
Weather Web site at http://www.xmwxweather.com for more
information.) Any weather feature can change in appearance or
interpretation if the source that provides the information changes.
XM WX Weather data is broadcast at predetermined rates. For
example, NEXRAD (
NeX
t Generation Weather
RaD
ar) data is
broadcast at five minute intervals. When the Garmin unit is turned
on or when a new feature is selected, the GXM 40 has to receive
new data before it can be shown. You might experience a delay
before weather data or a new feature appears on the map.
Setting the XM WX Weather Options
To configure the weather settings from the Home screen, touch
Weather
>
Weather Setup
. From this menu, you can turn the
NeXRaD Loop on or off, and hide or show the weather Legend .
Viewing Precipitation Information
Precipitation shows NEXRAD radar, storm cells, lighting strikes,
and hurricane warnings. To view the Precipitation screen from the
Home screen, touch Weather > Precipitation .