ⅠOverview of certification projects
DAB +: All names are called Digital Audio Broadcasting in English, abbreviated as DAB. DAB is a digital audio broadcasting technology that is designed to provide high-quality digital audio program and data services to transmit and receive programs and data services from mobile or portable, fixed digital audio from the ground of the high frequency (VHF) frequency band.
The DAB system is designed to provide spectrum and power efficiency technologies such as single-frequency network (SFN) and blank filling technologies for ground transmitter network planning. The DAB system follows the other standards required for radio communication
Ⅱ.Automotive Apply for a DAB + certification
Next, Zhongle certification focuses on the automotive industry users to share the next Automotive product application for DAB + logo certification focus involved in:
Figure 2-Schematic diagram of the vehicle-mounted DAB + technology
1. DAB + market demand
In 2021, the global digital radio BBS launched a market survey "Dashboard Dialogue", the main target of the survey is for recent or potential car buyers, the market survey is mainly in France, Germany, Britain, Italy, Australia and other developed countries, the survey way mainly for three: through the radio audience, more than 2400 online questionnaire, offline street interviews.The study found that 91 percent of new and potential car buyers said they recently or next had a DAB / DAB + or FM radio installed on the dashboard. It further proves that despite the rapid development of the automotive industry and technological updates, radio is still an important part of the in-car experience and the audio platform with the most listening times in the car. Because of this, DAB + certification has become an indispensable indicator of product marketing.
2. DAB + technology coverage
3. The original intention of regulating DAB+ technology for Automotive products
3.1 For better user experience
3.2 Ensure the sensitivity of DAB receivers and antennas on the market
3.3 Provide technical support for the market of rear-mounted products
4. DAB+ certification process for Automotive products
5. The main focus of Automotive products applying for DAB+ certification
5.1 UX design
5.2 Metadata Data
5.3 Real car test
5.4 Data interaction
5.5 Frequency band testing
5.6 Other necessary test items
To be continued....
