Farassoo FDR-217

گیرنده دیجیتال تلویزیون

Features :

● HDMI 1080P output. Resolution at 576I/P, 720I/P, 1080I
● Supports H.264, DIVX, MP3, MKV, MP4, JPEG, AVI and more
● High speed USB 2.0 Suppoted
● Media player for DIVX, AVI, MKV, MP3, MP4, H.264, JPEG and more
● PVR, schedule recording
● Multi-language OSD (Farsi Menu Included)
● Output: PAL, NTSC. H264 and MPEG-2 decoding
● Automatic or manual area searching
● Preview of TV channel
● CVBS, YUV, Coaxial, R&L, S-VEDIO, HDMI
● 4:3, 16:9 Screen Aspect Ratios
● 7 days EPG (Electronic program guide) preview


DVB-T is an abbreviation for Digital Video Broadcasting — Terrestrial; it is the DVB European-based consortium standard for the broadcast transmission of digital terrestrial television that was first published in 1997[1] and first broadcast in the UK in 1998.[2] This system transmits compressed digital audio, digital video and other data in an MPEG transport stream, using coded orthogonal frequency-division multiplexing (COFDM or OFDM) modulation

Basics of DVB-T

Rather than carrying the data on a single radio frequency (RF) carrier, OFDM works by splitting the digital data stream into a large number of slower digital streams, each of which digitally modulate a set of closely spaced adjacent carrier frequencies. In the case of DVB-T, there are two choices for the number of carriers known as 2K-mode or 8K-mode. These are actually 1,705 or 6,817 carriers that are approximately 4 kHz or 1 kHz apart.

DVB-T offers three different modulation schemes (QPSK, 16QAM, 64QAM).