Alpine 7294R - Page 13

OPERATION |
@ R.D.S. METHOD
The R.D.S. (Radio Data System) is a broadcasting system in which digital data for
automatic tuning, etc., on car radios is added to the FM radio signals.
Its standards are set by the E.B.U. (European Broadcasting Union).
Automatic Tracing
Point A
To keep receiving the same broadcast when moving from point A to point B with the
network shown above, it was previously necessary to tune in the next station (1 to 4)
either manually or using the seek operation once the reception got bad.
The auto tuning system automatically switches the reception station to the station in the
network offering the best reception.
The RDS data used are the Pl, PS, AF, TP and TA data.
Pl: Program Identification code
Code identifying programs and consisting of a country code and a program code.
PS: Program Service name
Broadcast station name signal expressed in alphanumerical characters of up to 8.
AF: Alternative Frequencies
Frequency list signal for broadcasting stations transmitting the same program.
TP: Traffic Program identification
Identification signal for traffic information broadcasting station.
TA: Traffic Announcement identification
Identification signal showing traffic information is being transmitted or not.
@ RDS Signal
RDS Signal
ARI Signal
Stereo Audio Signal RDS Signal
ARI Signal
Lbs
= £
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Frequency (kHz) Frequency (kHz)
The RDS data are transferred as shown above so that they do not give any influence on
the sound signals.
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