The DR2C module is a wireless COFDM dual-set receiving demodulation module developed by our company。DR2C module has high receiving sensitivity、small volume、simple interface,Suitable for various wireless data broadband digital transmission applications,Including drone high-definition digital wireless image transmission application、Security wireless video long-distance transmission applications, etc.。

Function Description:
- DR2C module realizes COFDM wireless signal reception and demodulation function;
- dual antenna reception,SMA antenna interface;
- Receive frequency band:160MHz~860MHz;
- Single channel receiver sensitivity:QPSK 8MHz -97±1dbm,QPSK 6MHz -98±1dbm,Sensitivity increased by 3dbm when receiving with dual antennas;
- Supports high-speed mobile reception;
- configurable parameters:
- IFFT:2K,8K
- modulation mapping:QPSK, QAM16, QAM64
- guard interval:1/4, 1/8, 1/16, 1/32
- FEC:1/2, 2/3, 3/4, 5/6, 7/8
- bandwidth:1.8MHz~8MHz,Step 0.1MHz
- The demodulated digital signal output interface is J3 interface(TSI)
- Power Indicator、work indicator
- PCBA weight:13.4gram
- board size:51mm x 30mm
DR2C module J3 interface signal definition:
J3 interface is 2×10 20pin 1.27mm pitch in-line header,Used to connect DR2C module and decoder board,It uses TSI to transmit data。The signal definition is shown in the table below:
| PIN serial number | direction | Signal name | describe |
| 1 | IN/OUT | HOST_BUS0 | DR2C I2C Data |
| 2 | IN/OUT | HOST_BUS1 | DR2C I2C Clock |
| 3 | In | RESET_IN | DR2C Reset |
| 4 | PWR | GND | Signal area |
| 5 | PWR | VDD_5V | DR2C 5V power input |
| 6 | OUT | HOST_BUS2 | TSI Data0 |
| 7 | OUT | HOST_BUS3 | TSI Data1 |
| 8 | OUT | HOST_BUS4 | TSI Data2 |
| 9 | OUT | HOST_BUS5 | TSI Data3 |
| 10 | OUT | HOST_BUS6 | TSI Data4 |
| 11 | OUT | HOST_BUS7 | TSI Data5 |
| 12 | OUT | HOST_BUS8 | TSI Data6 |
| 13 | OUT | HOST_BUS9 | TSI Data7 |
| 14 | OUT | HOST_BUS10 | TSI Frame Indicator |
| 15 | OUT | HOST_BUS11 | TSI Sync |
| 16 | OUT | INT_SELECT1 | DR2C mode Select |
| 17 | OUT | HOST_BUS12 | TSI Clock |
| 18 | IN | HOST_BUS13 | FEC Fail |
| 19 | PWR | VDD_3P3V | DR2C 3.3V power input |
| 20 | PWR | GND | Signal area |
Mechanical Dimensions:

The DR2C module can be plugged into the SHD1 H264 decoding and playback board,Used as a high-sensitivity low-latency COFDM receiver:

The DR2C module can also be plugged into the SHD2 board for use:


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