Integrated receiver/decoder with ASI and RF inputs

The IRD-3811 combines RF demodulation and MPEG-2 decoding of ASI transport streams to either HD or SD. It also offers processing of key video and audio parameters, and signal probing functions for feed aggregation, distribution, and monitoring applications by broadcasters and TV services providers.

DVB-ASI, ATSC off-air or DVBS/S2 satellite signals fed to the IRD-3811 can be demodulated and decoded to provide either HD or SD video with embedded multi-channel audio, in all leading formats, as well as composite video and stereo analog audio for monitoring. The IRD is also available with a DVB-CI slot, supporting leading Conditional Access Systems, and allowing descrambling of multiple encrypted services. With its optional Gigabit Ethernet port, the IRD-3811 can also act as a gateway, by performing IP encapsulation of the input transport stream in either RTP or UDP mode.

The IRD also provides optional video signal processing with frame synchronization and selectable delay as well as proc-amp, up/down/cross conversion and aspect ratio conversion. The IRD can decode an extensive range of Metadata, such as CEA-608 compliant Closed captioning, Teletext, AFD, V-chip and DVITC Time Code, which can be embedded in the decoded SDI signal. Transport Stream Metadata, such as PSIP can also be analyzed.

The audio processing capabilities of the IRD-3811 are also extensive, with dual audio decoding and selectable stereo downmix modes of decoded MPEG-1 and Dolby Digital (AC-3) 2.0 audio. Optionally, the IRD-3811 also performs embedding of decoded of Dolby Digital (AC-3) 5.1 audio, with discrete 8-channel output.

In addition, the IRD-3811 performs a wide range of signal quality probing, with user-defined alarm settings on an extensive range of transport stream parameters, including TR 101290 alarms, transport stream structure analysis and individual program statistics. The IRD also generates low-resolution H.264 video proxy and 2-channel audio streams of selected programs for monitoring.

Key features and benefits

  • Input/output versatility
  • Single 8VSB or QPSK/8PSK RF input
  • Single ASI transport stream input
  • Single ASI transport stream output for signal monitoring or retransmission
  • Optional IP transport stream output: ASI signal can be re-transmitted as IP. IRD acts as IP video gateway with forward error correction (FEC) for improved quality
  • Dual HD/SD SDI outputs
  • Composite video and stereo analog audio monitoring outputs
  • Conditional access
  • DVB-CI common interface slot allow descrambling of multiple programs
  • Supports BISS-1 with user supplied CAM card
  • RF input monitoring
  • Automatic detection of RF loss
  • Convenient auto-scan mode for detection of valid signals
  • Monitoring of input signal strength, bit error rate (BER) and carrier to noise ratio (CNR)
  • Easy input and program selection
  • Manual or automatic input selection mode
  • Automatic mode allows switching to backup input upon loss of signal on active input, with adjustable duration
  • Program selection using local control or iControl
  • MPTS automatic program selection mode and recovery
  • Extensive video format support
  • 1920 x 1080 i59.94 and i50
  • 1280 x 720 p59.94 and p50
  • 720 x 486 i59.94 and 720 x 576 i50
  • Comprehensive dual program audio decoding
  • Decoding of MPEG-1 Layer 2 stereo audio
  • Decoding of Dolby Digital (AC-3) 2.0 audio
  • Optional decoding and embedding of Dolby Digital (AC-3) 5.1 audio to SDI with support of main and associated audio services for up to discrete 8-channel output
  • Selectable passthrough of Dolby Digital stream to SDI
  • Decoding of AAC-LC Audio for 2/0 and 1/0 coding modes
  • Frame synchronizer/delay, reference input and video proc
  • Supports timing, full phasing and freeze modes
  • Reference can be external via BNC, internal using URS or directly from the decoded signal with selectable genlock modes
  • Video Proc Amp functions including, brightness, saturation, hue and contrast
  • Decoded video format identification
  • Identification of key video parameters
  • • Aspect ratio identification: 16:9 or 4:3
  • • Video resolution
  • Audio processing and format identification
  • Provides downmix of 5.1 channel to Lt/Rt or Lo/Ro modes
  • Extensive Dolby Digital Metadata reporting
  • Support for Secondary Audio Program (SAP)
  • Configurable Dolby Digital dynamic range and compression
  • Dolby Metadata embedding on SDI (SMPTE 2020-A)
  • Metadata extraction, display and embedding
  • EIA-608 and EIA-708 closed captioning
  • WST Teletext
  • SMPTE 12M Time Code
  • SMPTE 2016 AFD flag
  • Extensive PSIP data extraction
  • Time and date and other STT data
  • Transport stream probing and alarming
  • Transport Stream (TS) monitoring and alarming and settings:
  • • TR 101 290 priority 1 and priority 2 alarming on key parameters
  • • Logging of alarms using iControl
  • Detailed TS structure reporting using graphical and hierarchical views
  • Individual program data statistics, including individual program bit rate, content and PMT data
  • IRD generates low-resolution H.264 video proxy and 2-channel audio streams of selected programs for monitoring
  • Video up/down/cross conversion
  • Extensive selection of video format conversions
afd urs dolby