DVB-T Modulator

COFDM Modulator with digital filters

This board can be used either as a standalone module or in conjunction with other Tecnoroll products.

As a standalone module, the board allows to obtain a complete COFDM DVB-T modulator.

Used together with the DigiPEG board, it allows to obtain a complete transmission system with extremely small dimensions, from Audio/Video input to MPEG-2 codification, Multiplexing and COFDM DVB-T transmission.

(click to enlarge)

Tecnical Specifications

Modulation type :	COFDM DVB-T (ETSI EN 300 744)
Channel Bandwidth :	6-7-8 MHz
Carriers :	2K-8K
Hierarchy :	Alpha 0
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
PCR Restamper :	Selectable ON/OFF
SFN Compatibility mode :	Selectable ON/OFF (packet signature for compatibility with DVB-T SFN distribution networks)
Output Frequency :	0-120 MHz (internal DDS)

Standard Filtering VS Enhanced Filtering (click to enlarge)
Spectrum 8MHz Standard Filtering (click to enlarge)	Spectrum 8MHz Enhanced Filtering (click to enlarge)
Spectrum 7MHz Standard Filtering (click to enlarge)	Spectrum 7MHz Enhanced Filtering (click to enlarge)
Spectrum 6MHz Standard Filtering (click to enlarge)	Spectrum 6MHz Enhanced Filtering (click to enlarge)
MER 2K Carriers (click to enlarge)	MER 8K Carriers (click to enlarge)
MER All Carriers (click to enlarge)	Impulse Response (click to enlarge)
Spectrum Power Density Standard Filtering (click to enlarge)	Spectrum Power Density Enhanced Filtering (click to enlarge)