DB25 Female - DB9 Male
DB9 Female - DB9 Male
4.8.3.
RDS board
The board is equipped with DB25-type female to DB9-type male cable, which
can be replaced by a DB9 female to DB9 male cable (see diagram below), plus a 3.5”
floppy with software for correctly programming the RDS.
N.B.
The software supplied is Microsoft Windows (c) compatible.
The board features a microcontroller which controls the RDS message genera-
tion.
The services supported by the encoder are programmed via a PC connected to
the serial interface, running an easy-to-use program. Once programmed, the RDS mes-
sages are saved, even in the absence of primary power.
The board is equipped with a timer-calendar which updates the date and time
even when no external power is present.
The RDS carrier is generated internally by a quartz oscillator, but when a 19KHz
carrier is applied to the MPX1 IN input, whose amplitude, stability and frequency conform
with the specification, the encoder locks to the external frequency and generates the 57
KHz synchronised to it (STEREO led lit). Thanks to the microcontroller, the encoder can
modify the transmitted message in real time which makes the system extremely flexible and
adaptable to the various customer requirements.
The software supplied allows programming of a set of 8 distinct PS Messages
each comprising 16 words of 8 characters and a maximum of 16 lists of alternative fre-
quencies. These limits are not binding but have been advised by a sample of users.
To Next Page
Loading...
