Document: CL140072 L2174 Manual Issue 2.0 Page 7 of 26
5 SPECIFICATION
5.1 Demodulation
Modes supported:
DVB-T:
• 6/7/8MHz bandwidth
• QPSK/16QAM/64QAM
• FEC 1/2, 2/3, 3/4, 5/6, 7/8
• Guard Interval 1/32, 1/16, 1/8, 1/4
LMS-T:
• 10/20MHz bandwidth
• QPSK/16QAM
• FEC 2/3
• Guard Interval 1/8, 1/16
General:
• Receiver performance meets or exceeds ES 202 239 in DVB-T mode (typical sensitivity -93dBm
@DVB-T QPSK 1/2)
5.2 Decoding
Video Formats supported:
SD: 625i50; 525i59
HD: 720p50; 720p59; 720p60; 1080i50; 1080i59; 1080i60; 1080p23; 1080p24; 1080p25; 1080p29;
1080p30; 1080psf23; 1080psf24; 1080psf25; 1080psf29; 1080psf30
HD Horizontal Resolution support (1080 line) : 1920, 1440*, 1280*, 960*
HD Horizontal Resolution support (720 line): 1280, 640*
SD Horizontal Resolution support (576/480 line): 720, 704*, 640*, 540*, 528*, 480*, 360*, 352*
* Not supported in Low Delay mode
(other resolutions will work but artefacts may be observed)
Chroma Format : 420 / 422
Bit Depth : 8bit (MPEG2); 8/9/10 bit (H.264)
Maximum Bit Rate : 80Mbit (MPEG2)
Audio Formats supported :
MPEG-1 Layer 1 20-bit 48kHz
MPEG-1 Layer 2 20-bit 48kHz
SMPTE 302M 20-bit 2 channel 48hHz 8ms frame
5.3 Inputs & Outputs
Summary (details in section 6):
• 4 x UHF input 70MHz to 860MHz, combined using Maximal Ratio Combining (MRC). Not L2170.
• 1 x ASI input (complies with ISO/IEC 13818-2 – 188byte mode)
• 1 x Frame lock input (Black/Burst or Trilevel). Not L2074
• 2 x Video outputs (CVBS/SD/HDSDI). Not L2074
• 1 x ASI output (complies with ISO/IEC 13818-2 – 188byte mode). 2 outputs on L2074
• 2 Audio channel outputs (analogue or digital). Not active in L2074
• Data channel output. Not active in L2074
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