Garmin 640 Guida Utente

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GPSMAP 640 Owner’s Manual 
Marine Mode: Using XM WX Weather and Audio
Using XM Audio
When you connect an optional GXM 40 XM antenna to your 
GPSMAP 640, and you connect the GPSMAP 640 to the audio 
input of your boat, you can listen to XM Audio channels.
To display the XM Audio interface from the home screen, touch 
Configure
 > 
XM audio
.
To display the XM Audio interface from any other chart or screen, 
touch 
XM
.
To select an XM Audio Channel, touch the right or left channel 
select arrows to change to the next or previous channel within the 
current category.
Channel guide—select a specific XM channel by name, within 
the current category.
Channel entry—enter a channel using the on-screen keyboard.
Save preset—save the current XM channel in the Presets list. 
Touch 
Delete preset 
to remove the current channel from the list. 
Presets is displayed as a category in the category list.
Category—selects the category of channels that are displayed in 
the Channel Guide.
Mute—silences the audio.