15
RDS IDs and flags, and for uploading Radio Text. Communication
syntax is explained in Section IV, with programming instructions
beginning on Page 21.
Computer or
Terminal
Requirements
The encoder may be addressed with any computer running a
terminal emulation program (eg:
HyperTerminal,
normally
supplied with
Microsoft Windows
), or with a simple dumb
terminal that has an RS-232 interface. The encoder can
accommodate several baud rates, but the factory default is 9600
baud. Set the terminal (or terminal program) for: 9600-baud / 8
data bits / no parity / one stop bit (9600,8,N,1).
Static PS and other IDs, flags and the alternative frequency list are
uploaded into non-volatile encoder memory. If dynamic Radiotext is
not used, a slogan, phone number or advertising message can be
entered as a simple static message. Once this has been done, and all
data saved (see Pages 23 and 30), the encoder may be disconnected
from the computer, relocated to another operating point, or
reconnected to an alternative data source for dynamic messaging.
This may be a hard-disk-based station automation system that
provides song title and artist, plus ads or station promos. The
automation system must be configured to the encoder s baud rate
and programmed to deliver dynamic data in proper syntax as
explained in Section IV
If you simply want to hand-type ads or promos at the time of
transmission, the encoder may remain connected to the computer.
As the encoder ignores all input data that are not properly
formatted, the computer may be turned off or used for other tasks
while not actually communicating with the encoder. The terminal
emulation program may be kept running in a minimized window
for ready access.
Modem Link
A modem link also may be used for addressing the encoder from a
remote location. When properly configured, a modem link will
appear transparent, as if the encoder was connected directly to the
controlling system. Figure 5 shows proper pin connections for the
cable used to connect the Model 712 to a conventional external
modem. The three conductors shown are the only ones required;
make sure that the cable used has these connections as shown.
Figure 5
Encoder/Modem Connections
DB-25 Male (MODEM end)
DB-9 Male (ENCODER end)
2 3
7
2 3 5
