Skip to main content
Login Contact Us


MPEG Decoder with ASI and GigE IP Inputs

The IRD-3802 provides MPEG-2 decoding of ASI and IP transport streams to either HD or SD. It also provides 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 or IP transport streams fed to the IRD-3802 can be decoded to provide either HD or SD video with embedded multichannel 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 mutiple encrypted services. With its Gigabit Ethernet port, the...


Input/output versatility
  • Dual ASI transport stream inputs
  • Single ASI transport stream output for signal monitoring or retransmission
  • IP transport stream input/output: an ASI signal can be re-transmitted as IP and an IP stream can be forwarded as ASI
  • IRD acts as IP video gateway with forward error correction (FEC) for improved quality
  • IRD-3802 is now available with a rear module featuring two Ethernet ports and change-over functionality for use in redundant IP router topologies
  • Dual HD/SD SDI outputs
  • Composite video and stereo analog audio monitoring outputs


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
  • 1920x1080i59.94/50
  • 1280x720p59.94/50
  • 720x486i59.94 and 720x576i50
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 pass-through 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 ST 2020-A)


Metadata extraction, display and embedding
  • EIA-608 and EIA-708 closed captioning
  • WST teletext
  • SMPTE ST 12 timecode
  • SMPTE ST 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/crossconversion
  • Extensive selection of video format conversions


ASI Inputs
  • Quantity/ connector: 2 inputs with BNC connectors
  • Standards: EN50083-9 (V2:3/98) DVB ASI
  • Data bit rate: DVB ASI: Up to 80 Mb/s
  • Mode: Burst and byte supported
  • TS packet length: 188/204 byte packets
  • Return loss: >15 dB up to 270 MHz


ASI Output
  • Quantity/connector: One output with BNC connector


IP Input/Output
  • Quantity/connector: One gigabit Ethernet with RJ45 connector IEEE 802.3
  • Standards: Pro-MPEG code of practice 3 (CoP3)
  • Stream protocols: IP/UDP, RTP and IGMPV3


Video Decoder
  • Compatibility standard:
    • MPEG-2 compatible MP at HL
    • 4:2:0, resolution up to 1080i, 59.94 Hz
    • ATSC A/53
  • Bit rate: Up to 25 Mb/s


Audio Decoder
  • Standard:
    • MPEG-1 layer-II
    • Dolby Digital (AC-3) audio 2.0
    • Optional Dolby Digital (AC-3)
    • Audio 5.1
    • AAC-LC audio 2/0 and 1/0
    • Dual Dolby Digital pass-through
  • Service/channels: As per ATSC A/54A


Video Outputs
  • HD/SD SDI outputs: 2 outputs with BNC connectors
  • Signal:
    • SMPTE ST 259-C (270 Mb/s)
    • SMPTE ST 292 (1.485, 1.485/1.001 Gb/s)
  • Supported formats:
    • SD: 480i59.94, 576i50
    • HD: SMPTE ST 274: 1080i59.94/50
    • HD: SMPTE ST 296: 720p59.94/50
  • Embedded audio: SMPTE ST 299, SMPTE ST 272
  • Return loss: >15 dB up to 1.5 GHz
  • Jitter: <0.2 UI as per SMPTE ST 259-C for SD output
  • <0.2 UI as per SMPTE ST 292 for HD output


Monitoring Outputs
  • Analog video: NTSC 525/60, PAL (625/50) with one BNC connector
  • Analog audio: Unbalanced analog audio with two RCA connectors
Video and TS Metadata
  • CC data extraction: NTSC CC1 and CC2 as per EIA-608B
  • DTV CC: EIA-608B compliant bytes of EIA-708B
  • CC embedding: CC embedding as per SMPTE ST 334
  • Teletext: WST/EIA 300 706
  • Timecode: SMPTE ST 12
  • PSIP: ATSC PSIP standard A/65
Reference Input
  • Reference input: One input with BNC connector
  • Signal:
    • SMPTE ST 170/SMPTE ST 318/ITU 624-4/BUT 470-6 blackburst
    • SMPTE ST 274/SMPTE ST 296 tri-level sync (black)
  • Return loss: >35 dB up to 5.75 MHz
  • Power: 20W


Densité 3 frame Description
IRD-3802 MPEG decoder with ASI and GigE IP inputs
IRD-3802-3DRP Double rear connector panel
Options Description
IRD-38NN-OPT-FS Frame synchronization and delay option with reference and genlock
IRD-38NN-OPT-UDC Up/down/crossconverter option
IRD-38NN-OPT-TS-PROBE Transport stream probing option
IRD-38NN-OPT-DOLBY Dolby Digital (AC-3) 5.1 audio decoder option
Related products Densité REF-1801 reference module
Remote control iControl, iControl Solo, RCP-200



IRD-3802: MPEG Decoder with ASI and GigE IP Inputs Datasheet

The IRD-3802 from Grass Valley provides MPEG-2 decoding of ASI and IP transport streams to either HD or SD. It also provides processing of key video and audio parameters and signal probing functions for feed aggregation, distribution and monitoring applications by broadcasters and TV services providers.



Login Required

If you have a valid Service & Support Agreement please visit the link below to access the support portal to locate your product download.

Go to Product Downloads


Further documents

Already know what you're looking for? Click the link below to access our full documentation library

Visit Library
Go back to top