R.V.R. Elettronica RDS-TFT2HE, Руководство пользователя

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/ 34 User Manual
Rev. 1.0 - 01/02/22
/RDS-TFT2HE, /RDS-TFT3HE & /RDS-TFT4HE
ELETTRONICA
The pourpose of the /RDS-TFT2HE, /RDS-TFT3HE & /RDS-TFT4HE option is to
manage the principal services defined by the standard CENELEC EN 50067 as:
PI, PS, PTY, TP, AF, TA, DI, M/S, PIN, RT, EON, TDC, IH, CT.
As follows, we’ll mention a short description about the function of each of these
services.
PI - PROGRAM IDENTIFICATION : it’s the identification code of the radio. Its more
important application is to allow the receiver, in case of bad reception, to implement
the “Automatic Frequency Change”; this happens when there is a signal with the
same PI and of better level than the syntonized one.
PS - PROGRAM SERVICE : it’s the visualized text on the receiver display, which
has to be of maximum 8 characters, as this is the standard dimension of receivers
displays.
The /RDS-TFT2HE, /RDS-TFT3HE & /RDS-TFT4HE characteristic is to store up
to 8 messages and the time of transmission of each of them. Every message can
be composed from 1 to 16 words of 8 characters, and it’s possible to select the
permanence time on the display of each of the 16 separate words.
PTY - PROGRAM TYPE : it’s the identification of the “Program Type” which is
on air (example News, Sport, Rock, etc.) It’s used to qualify on the receiver the
automatical research of the program type desired.
TP - TRAFFIC PROGRAM IDENTIFICATION : this service indicates with a signal
on the receiver display that the program we’re receiving includes traffic news.
AF - ALTERNATIVE FREQUENCIES : it’s the frequencies list of different
transmitters which transmit the same program in the adjacent receiving areas.
The list is memorized by the receiver and used to reduce the commutation time
beetwen the different transmitters of the same program.
TA - TRAFFIC-ANNOUNCEMENT IDENTIFICATION : it’ used to indicate to the
car-driver that the traffic news are on air. The receiver could use the signal in one
of the following modes:
a) To switch automatically from the Tape (or from the Compact Disk) to the radio;
b) To automatically switch on the radio when the traffic news begin;
c) To automatically change over from a station which doesn’t transmit traffic news.
M/S - MUSIC/SPEECH SWITCH : it’s used to modify, in the receiver, the music
and the spoken equalization one by one.
PIN - PROGRAM- ITEM NUMBER : it’s used to plan the receiver to receive certain
programs at preselected date and hour.
RT - RADIOTEXT
: it’s used to transmit the text trasmission; this function is mainly
for the domestic application (house receivers).