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FLEXMod 621
Single Frequancy Network (SFN) DVB-T Modulator
Integrated solution for the modulation of DVB-T/SFN services. The system is composed by a COFDM modulator with RF output. Easily configurable through a UART serial port, allows the development of a complete and very compact modulation system.
General specifications
- 2 ASI TS Inputs.
- 1 ASI TS Outputs.
- Automatic recognition and analysis of the incoming services.
- Visualization of the Input/Output TS bandwidth.
- Non-volatile memory for system configuration.
- Easy configuration through asynchronous serial port with high-level commands.
- No need for additional programming on power-up.
Modulator specifications:
- COFDM Modulator: DVB-T/H ETSI EN 300 744 V1.5.1.
- Selectable RF power output up to -7dBm.
- Digital reprogrammable filters (Precorrector).
- Subnetwork mode for DVB-T to DVB-T Gap filler implementations.
- Programmable Cell-ID and other H-modes.
- The internal oscillator can be locked to an external arbitrary clock source or to a GPS pps reference clock.
- Frequency range 0 - 50 MHz RF out through internal 1 GHz DAC.
- Modulation type: COFDM DVB-T (ETSI EN 300 744).
- Channel Bandwidth: 6-7-8 MHz.
- Carriers: 2K-4K-8K.
- Hierarchy: Alpha 0, 1, 2, 4.
- Constellation: QPSK, 16QAM, 64QAM.
- FEC: 1/2, 2/3, 3/4, 5/6, 7/8.
- Guard Interval: 1/4, 1/8, 1/16, 1/32.
- Spectrum mode: Normal/Inverted.
- Output Frequency: 0-50 MHz 1 Hz Step (Internal 1Ghz DAC).
- Output Level: -7 dBm typical.
- MER: ›45 dB typical.