15Audio modeDigital radio mode* (DAB, DAB+ and DMB-
Audio)
Operation
Fig. 12
DAB radiomode
Some units are equipped with an additional DAB radio receiver. DAB is adigital broadcasting standard for the terrestrial reception of radio programs.
The DAB radio receiver supports the DAB, DAB+ and DMB-Audio broadcast-ing standards.
In Europe, digital radio is transmitted via Band III (174 MHz to 240 MHz)and the L Band (1452 MHz to 1492 MHz) frequencies.
The frequencies of the two bands are referred to as “channels” and oneeach has a suitable channel name (e.g. 8A).
Several DAB stations are combined in a channel with the additional servicesavailable in a station “ensemble”.
The main view of DAB radio mode shows the name of the channel and thechannel's international ID, which appears above the station name in thecentre of the display.
DAB is currently not available in all areas. When in DAB radio mode in areaswith no DAB reception, it displays: .
DAB announcements
DAB announcements are additional DAB services also transmitted by radio(e.g. News, sports information, weather, warnings, etc.).
Note
The channel name, an indication that appears above the station's name,varies depending on the country, for example “FU-E”, but not the channel'sinternational ID, for example “11B” ⇒ Fig. 12.
Automatic station tracking
DAB programme tracking
Some DAB stations are broadcast in different regional ensembles.
If the current station is no longer available in your location, the unit may al-so switch to a corresponding partner station.
DAB programme tracking can be switched off in DAB settings ⇒ page 30 ifyou do not want automatic station switching because only brief receptionlosses are occurring due to the vehicle passing through tunnels, for exam-ple. The radio will be muted if reception is too weak.
Change from DAB to FM
Under DAB setup, the unit can be configured to switch to the FM frequencyband when required for automatic station tracking ⇒ page 30.
If reception of the currently selected DAB station is lost (e.g. no DAB availa-ble), the unit attempts to find the station on the FM frequency band andtune to it. Automatic station tracking between frequency bands only works ifthe DAB station and the FM station transmit the same station identifier orthe DAB signal indicates a corresponding station on the FM frequency band.
If the reception of the selected DAB station is lost and the station cannot befound on the FM frequency band, the radio will be muted.
