APPEAR AS
Confidential
282/352
RDS transmission is enabled when the appropriate input data source is selected from the RDS Mode drop down
box. The default value is no RDS transmission (Off). Three different sources of data are supported:
Manual
,
Auxiliary
UECP and
Ancillary
UECP.
Manual
enables the operator enter PTY, PS, and RT data.
Ancillary
requires that UECP information has been inserted in-band into the MPEG stream according to the
CENELEC European Standard EN 50067
6
.
Auxiliary
requires that EUCP data be inserted in a separate PID in a proprietary format. For more information on
supported formats, contact the Appear sales team.
We currently have two operational modes for UECP addressing, manual and automatic. In automatic mode it is
assumed that the incoming stream only contains information about one service/dataset at a time. The automatic
mode will follow the PSN/DSN of the last received command/data packets and use these for building the
outgoing RDS. If the incoming UECP stream contains information for multiple services/datasets manual
addressing must be used to select the appropriate information. It is allowed to enter only the relevant
information, e.g. only PSN is required in the case of multiple services and only one dataset. Leaving a PSN/DSN
field blank causes automatic behavior for this field.
In ancillary mode it is usually only information related to the service present, while in auxiliary mode (separate
PID) it may be data for several services in the UECP stream.
10.1.3.1
Manual RDS
The following parameters are available:
PTY
Manual Program Type
–
offers all 31 program types predefined in the RDS specification.
PS
Program Service
–
holds the eight character static display of the station name; this
information is displayed by receivers and can be cached by receivers as part of stored
presets.
RT
Radio Text
–
the field holds up to 64 characters.
When the in-band signaling is missing information,
the values entered in “RDS Mode: Manual”
are used
instead. To configure this, first
change the “RDS Mode” to “Manual” and enter the defaults. The “RDS
Mode” can then be changed back to “Ancillary” or “Auxiliary”
. I
f for example the “PS” field is missing i
n the
UECP signaling the default value will be transmitted. Missing is defined here as never received; this means
that if the field is received once in the UECP then this value will continue to be used.
6
Specification of the radio data system (RDS) for VHF/FM sound broadcasting in the frequency range from 87.5 to
108.0 MHz