Garmin gtm 20 Manuale Utente

The Garmin

®

 GTM

™

 20 FM TMC Traffic Receiver 

receives Traffic Message Channel (TMC) information 

broadcast over the FM radio data system. When a traffic 

message is received, your Garmin GPS device displays 

the incident on the map and can change your route to 

avoid the traffic incident. For coverage areas, refer to the 

Garmin Web site at http://www.garmin.com/fmtraffic. 

  NOTE: The FM traffic receiver and GPS 

device must be in data range of an FM station 

transmitting TMC data to receive traffic 

information. 

  NOTE: Garmin is not responsible for the 

accuracy of the traffic information. The FM 

traffic receiver simply receives signals from 

the traffic service provider and shows that 

information on your Garmin GPS device.

The GTM 20 includes a 15-month subscription to Clear 

Channel Total Traffic Network. The subscription activates 

automatically after your Garmin GPS device acquires 

satellite signals while receiving traffic signals from the 

pay service provider. When the subscription expires, 

purchase a renewal subscription; see the back of this sheet.
The GTM 20 can also use any free traffic services 

available in your current area. 
You can add other FM TMC subscriptions at any time. 

Check the Garmin Web site at http://www.garmin.com/

fmtraffic for other available services. 

  NOTE: You do not need to activate the 

subscription that came with your GTM 20. 

The subscription activates automatically when 

the Garmin GPS acquires satellite signals 

while receiving traffic signals from the service 

provider. 

1.  Remove the power cable from your Garmin GPS.
2.  Connect the cable on the GTM 20 to the power 

connector on your Garmin GPS. 

3.  Plug the other end into a 12-Volt receptacle. 
4.  Route the cable so that it does not interfere with 

vehicle operating controls.

Observe the LED on the GTM 20: When the GTM 20 

is connected to power, the Power LED is on. The GTM 

20 may take up to five minutes to acquire data. The Status 

LED indicates the status of the GTM 20:

 Yellow dot-dash flashes: determining 

which country you are currently in.

 Yellow solid light: searching for signal.
 Red solid light: momentary sync loss.
 Green solid light: normal traffic data.

Check the Map: Check the map on the GPS device 

for traffic incidents. Refer to the GPS device’s owner’s 

manual.
Verify Signal Strength: If you are inside a garage where 

radio signals cannot be received, you may need to take the 

vehicle outside. 
Verify that you are in a service area: Check for service 

from the pay service or free services.