DAB Tuner

DAB Tuner

DAB tuners provide two frequency ranges for data transfer. The L band (1452 MHz to 1492 MHz) and band III (174 MHz to 240 MHz). The data is transmitted digitally to the vehicle in specific channels within the L band and band III. Each channel contains only one ensemble, which in turn contains the radio stations and additional information regarding the radio stations.
Broadcasting station structure for DAB tuners:
- Ensemble 1
- Service 1
- Service 2
- Subservice 1
- Subservice 2
- Subservice 3
- Service 3
- Service 4
- Service 5

The DAB tuner can cover 12 ensembles. One ensemble comprises up to 15 services. The service is comparable with an AM/FM station. A service can contain audio data or information. The subservices offered for the selected service are displayed. In the subservices, for example, the artist, album name and song title are transferred. Alternatively, more audio data can be transferred via the subservices.

Additional information on the DAB tuner

Advantages of the DAB tuner
- Sound quality close to CD/MD of digital reception is possible
- Additional data services.
Singer, song title and album name News, weather, traffic information, etc.
- Reduction in multiple reception

Functions of the DAB tuner
- Autostore function
With the AUTOSTORE function, the receivable ensembles of the region are stored and are available. The services of the ensembles can then be played.

Personalisation of the DAB tuner
The settings of the DAB tuner can be personalised via the vehicle key. The following settings are then stored on a person-related basis:
- 12 services (stations)
- The last station listened to.
- Set frequency range (L band or band III)

Technical information on the DAB tuner
- Frequency of L band: 1452 MHz to 1492 MHz
- Frequency of band III: 174 MHz to 240 MHz
- Permitted voltage range (9-16 V)
- 1 aerial for band III
- 1 aerial for L band

Diagnosis of the DAB tuner
- DAB tuner in external control unit: Before diagnosing the DAB tuner, the voltage supplies and bus communication must be safeguarded. If the bus communication is working and no internal control unit faults of the DAB tuner are stored, the aerials must be checked in the event of a customer complaint.
- DAB tuner integrated in the headunit: In the current headunits (radio/Car Information Computer/multimedia platform), the digital radio function is being integrated into the headunit little by little. In this case, a separate DAB control unit is no longer installed in the vehicle. The function of the DAB unit is taken over by the headunit in this case. For the case where the DAB tuner is integrated into the headunit, the aerials for receiving the digital signal are connected to the headunit.