EN 50255:1997
(Main)Digital Audio Broadcasting system - Specification of the Receiver Data Interface (RDI)
Digital Audio Broadcasting system - Specification of the Receiver Data Interface (RDI)
The Eureka 147 Digital Audio Broadcasting System is able to transmit data rates of up 1.8432 Mbit/s. This data rate occurs if an EEP with a coderate of 0.8 is selected. Audio receivers generally will be capable to decode one or several MSC Subchannels, but will not contain decoders for all possible data services. Therefore, the source for the data to be carried on the Receiver Data Interface (RDI) is the output bit stream of the channel decoder of a DAB receiver. Dedicated decoders for data applications, computers, etc., but also devices for audio postprocessing and recording can be connected to the DAB receiver through this interface
Digitales Tonrundfunk-System - Spezifikation für die Empfänger- Datenschnittstelle (RDI)
Système de radiodiffusion sonore numérique (DAB) - Spécification de l'interface de données du récepteur (RDI)
Digital Audio Broadcasting system - Specification of the Receiver Data Interface (RDI)
General Information
Overview
EN 50255:1997 - Digital Audio Broadcasting system: Specification of the Receiver Data Interface (RDI) specifies the Receiver Data Interface for Eureka 147 Digital Audio Broadcasting (DAB) receivers. The standard addresses the RDI as the output bit stream from a DAB receiver’s channel decoder and defines how external equipment (dedicated data decoders, computers, audio post‑processing and recording devices) connect to and consume DAB data services. The document is also published as SIST EN 50255:1999 (Slovenian adoption). Keywords: Digital Audio Broadcasting, DAB, RDI, EN 50255, Eureka 147.
Key Topics
- Source of RDI: The RDI is the output bit stream of the DAB channel decoder - the interface presents decoded channel data for external use.
- Maximum data rate: Specifies operation with DAB data rates up to 1.8432 Mbit/s (occurring when an EEP coderate of 0.8 is selected).
- MSC subchannel handling: Recognizes that receivers may decode one or several Main Service Channel (MSC) subchannels but will not include decoders for every possible data service.
- External device compatibility: Defines the intended use for connecting dedicated decoders, computers, and devices for audio postprocessing and recording to the receiver via the RDI.
- Scope context: Positioned within the Eureka 147 DAB system family of standards and related to broadcasting/receiver interface specifications (ICS 33.170 - television and radio broadcasting).
Practical Applications
- Equipment manufacturers can use EN 50255 to design receiver outputs that reliably feed external data decoders, logging systems, or recording units.
- Product integrators and system designers use the RDI specification to ensure interoperability between DAB receivers and third‑party postprocessing or data‑service equipment.
- Broadcasters and service providers who bundle data services with audio can rely on compliant receiver interfaces to enable delivery and extraction of non‑audio content.
- Test labs and certification bodies reference the standard to validate that receiver products expose the channel decoder bit stream and support the defined DAB data-rate conditions.
Who Should Use This Standard
- DAB receiver hardware and firmware designers
- Consumer electronics manufacturers (car radios, home receivers)
- System integrators and OEMs connecting data applications to DAB receivers
- Test houses and conformity assessment organizations involved in DAB device testing
Related Standards
- Eureka 147 family of DAB system standards (covers over‑the‑air modulation, service multiplexing and overall system architecture)
- Other DAB receiver and service interface specifications (for full implementation, consult the wider set of DAB standards relevant to transmitters, multiplexers and service metadata)
For implementation or procurement, reference EN 50255:1997 (adopted as SIST EN 50255:1999) to ensure RDI compatibility with Eureka 147 DAB decoder outputs and the listed data‑rate conditions.
Frequently Asked Questions
EN 50255:1997 is a standard published by CLC. Its full title is "Digital Audio Broadcasting system - Specification of the Receiver Data Interface (RDI)". This standard covers: The Eureka 147 Digital Audio Broadcasting System is able to transmit data rates of up 1.8432 Mbit/s. This data rate occurs if an EEP with a coderate of 0.8 is selected. Audio receivers generally will be capable to decode one or several MSC Subchannels, but will not contain decoders for all possible data services. Therefore, the source for the data to be carried on the Receiver Data Interface (RDI) is the output bit stream of the channel decoder of a DAB receiver. Dedicated decoders for data applications, computers, etc., but also devices for audio postprocessing and recording can be connected to the DAB receiver through this interface
The Eureka 147 Digital Audio Broadcasting System is able to transmit data rates of up 1.8432 Mbit/s. This data rate occurs if an EEP with a coderate of 0.8 is selected. Audio receivers generally will be capable to decode one or several MSC Subchannels, but will not contain decoders for all possible data services. Therefore, the source for the data to be carried on the Receiver Data Interface (RDI) is the output bit stream of the channel decoder of a DAB receiver. Dedicated decoders for data applications, computers, etc., but also devices for audio postprocessing and recording can be connected to the DAB receiver through this interface
EN 50255:1997 is classified under the following ICS (International Classification for Standards) categories: 33.160.20 - Radio receivers. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 50255:1997 is associated with the following European legislation: Standardization Mandates: BC-T-244B. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-april-1999
Digital Audio Broadcasting system - Specification of the Receiver Data Interface
(RDI)
Digital Audio Broadcasting system - Specification of the Receiver Data Interface (RDI)
Digitales Tonrundfunk-System - Spezifikation für die Empfänger- Datenschnittstelle (RDI)
Système de radiodiffusion sonore numérique (DAB) - Spécification de l'interface de
données du récepteur (RDI)
Ta slovenski standard je istoveten z: EN 50255:1997
ICS:
33.170 Televizijska in radijska Television and radio
difuzija broadcasting
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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