描述
DAB+ IS FINALLY AVAILABLE ALSO FOR SMALL RADIO STATIONS AND LPFM – HOBBY USERS
Based on stand-alone solution which receives ETI stream via Ethernet. This stream can be from Internet/Ethernet sources or created by you.
SPECIFICATIONS:
– 標稱發射頻率：176 … 239 Mhz
– Maximal Tramsmit Frequency: 400 MHz (with 1Ghz reference clock)
– Transmit Power: approximately -60 … 15 dBm
– 信號肩高：54 dB（如果 TX 功率為 3 dBm）。
– Drivers Installation Needed: NO
– Software Needed: NO (Only if you need to create ETI-stream yourselve, ODR-DabMUX is needed)
– LEDs That shows state: Yes (underflow, PLL-lock, link activity, fpga status)
– I/Q 樣本寬度：18 位
– 複雜採樣率：6144 kS/s。
– 輸入接口：10/100 Mbit 以太網
– External power: 5V / 1A (power consumption – is up to 700mA in old PCB versions, and up to 450mA in new one’s)
– Output RF connector: SMA-Female
The main point of creating this hardware – is to have possibility to create DAB stream without need of PC. So all CPU-intensive job, like: ETI-processing, Adding error correction codes, Adding Phase Reference, DQPSK, Fourier transform/COFDM and I/Q processing has been moved from the software to hardware part (into XC6SLX9 FPGA). After this changes been done, all what is needed – is ETI stream from the satellite provider or from ODR-DabMux sent by the TCP-connection to the board. Just set network parameters, point to the source of ETI-stream (ip and port), and set RF frequency and amplitude – and volia! There is also exciter info that describes how to enables SFN operationing by using various GPS
重要的：
需要 ETI 流（計算機運行 ODR-DabMUX 連接到互聯網或以太網的某個地方）。音頻被饋送到這台計算機，並且正是這台計算機創建 ETI 流。這台計算機可以在任何地方連接到互聯網，甚至在距離DAB+卡數千公里之外的世界另一端。
如何設置 DAB+ 無線電？：
分步說明如下： https://wiki.opendigitalradio.org/RaspDA
激勵器本身通過 WEB 界面進行配置（在 Web 瀏覽器中輸入 DAB+ 激勵器的 IP 地址）。
Output level:
It is low, you will need an amplifier. Check 這裡 和 這裡 for solutions.
包含什麼？
– DAB+ exciter board, new version (blue PCB)
– External GPS receiver with cable (for better accuracy)
– Power supply 5V 1A (EURO plug, 90-264V universal)
– Cool custom made small aluminum box
我還需要什麼但不包括在內？
– Output level is is very low, you will need an amplifier. Check 這裡 和 這裡 for solutions.
– An antenna, one of these is recommended:
– Coaxial cable such a 這 或者 這.
– ETI source. If you don’t have it you can use ODR-DabMUX (It may sound scary but you can handle it)
– Ethernet cable and access to local network or Internet with active ETI source
– 良好的音樂品味和出色的技巧，能夠製作出令聽眾眼花繚亂的節目
FIRST POWER UP
– Connect antenna to DAB+ exciter board
– Connect Ethernet cable
– Connect +5V power supply
– If your network has gateway of 198.168.1.1 than the card will start transmitting stream from test source in Belgium. If not you will have to change settings.
– The IP of card is set to: 192.168.1.170 and network Gateway is et to 192.168.1.1. If your network setup differs you won’t be able to open config page, adjust your Ethernet adapter card gateway to 192.168.1.1. and you will be able to open card settings in web browser at: 192.168.1.170. Username and password are admin/admin.
– Read the manual for more info, it is available under Additional information tab above.
商品評價
目前沒有評價。