Dodge 2008 RT Caravan - Manual (Page 253)

Rear Park Assist System — If Equipped
When ENABLE is selected, the Rear Park Assist System is
activated. When DISABLE is selected, the System is
deactivated and, the instrument cluster will display the
ЉPARK ASSIST DISABLEDЉ message.
Display Units of Measure in
The EVIC, odometer, and navigation system (if
equipped) can be changed between English and Metric
units of measure. To make your selection, press and
release the RESET button until US or METRIC appears.
RADIO GENERAL INFORMATION
RADIO BROADCAST SIGNALS
Your radio will provide excellent reception under most
operating conditions. Like any system, however, car
radios have performance limitations, due to mobile op-
eration and natural phenomena, which might lead you to
believe your sound system is malfunctioning. To help
you understand and save you concern about these “ap-
parent” malfunctions, you must understand a point or
two about the transmission and reception of radio sig-
nals.
Two Types of Signals
There are two basic types of radio signals:
1. AM or Amplitude Modulation, in which the transmit-
ted sound causes the amplitude, or height, of the radio
waves to vary.
2. FM or Frequency Modulation, in which the frequency
of the wave is varied to carry the sound.
AM Reception
AM sound is based on wave amplitude, so AM reception
can be disrupted by such things as lightning, power lines
and neon signs.
UNDERSTANDING YOUR INSTRUMENT PANEL 251
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