Garmin 7200 业主指南

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The FM transmitter is intended to transmit your 

StreetPilot’s audio to your car stereo’s antenna.
Do not adjust your FM settings while you are driving 

your vehicle. 
When searching for an appropriate FM frequency on 

your vehicle’s radio, look for an unused frequency that 

has steady, consistent static. If you hear slight noises 

and sounds in the background of the static, choose a 

different frequency.
Touch 

 to play a sample audio output over your 

vehicle’s stereo. If the sound is not to your liking, try a 

different frequency and touch 

 again.

As you travel, you might need to change the frequency 

for the FM transmitter. A frequency not used by a 

radio station in your area might be used by a station 

elsewhere. 

As you drive, you may notice changes in the 

background static even though there is no FM station 

using that channel. You may notice this as you drive 

through intersections where certain kinds of traffic 

lights or other municipal electronic systems are 

operating. You might also notice this effect when the 

terrain changes, allowing distant stations to be received 

by your car stereo that were not received when you 

made your initial frequency selection. These and other 

sources of electrical interference may make it necessary 

to look for another frequency. 
The distance between the 12-Volt adapter, the 

StreetPilot, and the vehicle antenna may also affect the 

noise level. Vehicles with antennas located far away, 

such as a rear-mounted antenna, may experience more 

interference from outside noise sources than vehicles 

with front-mounted antennas.