IRD - Satellite or ATSC Decoder to SDI, IP, ASI, Closed Captions

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Description Features Drawings Model Selection Specification Q&A Documents Support
Satellite DVBS/S2 RF Input model description
Sattelite RF DVBS/S2 RF input IRD Decoder with SDI, ASI, IPTV Output PN: H-IRD-V3

Universal Broadcast IRD Decoder

Thor H-HD-IRD series Integrated Receiver Decoders have several applications for decoding program content to broadcast quality video.  Equipped with every major video signal output, including HD-SDI, Thor H-HD-IRD units can provide HD video to any display or professional video system.  Also available are modern digital audio outputs on both optical Toslink and XLR connectors.  Dolby AC/3 audio pass through is standard, and closed caption support for both 608 and 708 captioning systems is present.  The V3 platform adds a front panel LCD video display for confidence monitoring, as well as an internal program multiplexer for combining content from both ASI and IP sources simultaneously.  The web interface displays all available programs and corresponding PID's.  Each program can be independently added to either the ASI or IP outputs. 

 All selected programs are multiplexed into a single MPTS output.  Additionally, the IP output can be configured for up to 32 SPTS single program stream outputs, each with different address and port settings.  This allows the V3 system to be used as an intelligent ASI to IP or RF to IP Gateway with add drop and ASI video signal multiplexing capabilities.  Combined multi program transport streams carried over IP can also be separated into their corresponding single program streams.  The RF tuner can be configured for QAM, 8VSB (ATSC), DVB-T, DVB-C, or DVB-S2 signal sources.  Two CAS card slots allow decoded of encrypted programing. 

Thor HD-IRD units can be used for converting broadband programing to uncompressed HD video, as well as multiplexing and retransmitting programs to both ASI and IP outputs.  Thor HD-IRD systems are a reliable and versatile platform for broadcast program decoding and TS protocol conversion:


There are simplify capabilities of this IRD:


  • It can take in different types of signals:
    • ATSC RF:
    • DVB-S/S2 RF
    • QAM RF:.
    • IP UDP Multicast / Unicast:
    • DVB-ASI:


  • It can send out signals in various ways:
    • ASI: For distributing MPEG transport streams.
    • IP: Sending content over computer networks.
    • Decoder Video: It can provide video in different formats such as SDI, HDMI, YPbPr (component video), and CVBS (composite video).

Applications and Conversions:

  • Decode (SATT DVB-S/S2 RF ) to  SDI, HDMI, CVBS, YPbPr Video and Audio
  • Decode (Tersial ATSC RF ) to  SDI, HDMI, CVBS, YPbPr Video and Audio
  • Decode (CABLE TV QAM RFor ISDB-T) to  SDI, HDMI, CVBS, YPbPr Video and Audio
  • Sattelite  DVB-S/S2 RF to  IP - UDP
  • Off Air ATSC RF  to  IP
  • Cable QAM RF to  IP
  • Sattelite  DVB-S/S2 RF to  DVB-ASI
  • Off Air ATSC RF  to  DVB-ASI
  • Cable QAM RF to DVB-ASI
  • IP-ASI   It can change IP input streams into two ASI streams.
  • ASI-IP  It can  convert ASI input as IP output .


  • You can merge two ASI streams into one.
  • It supports IP streaming with one MPTS and eight SPTS streams over UDP and RTP/RTSP, with ASI output.
  • IP to VIDEO/AUDIO - It can convert IP streams to video formats like SDI, HDMI, CVBS, and YPbPr.
  • ASI to VIDEO/AUDIO ASI streams can be converted to video formats too, like SDI, HDMI, CVBS, and YPbPr.

In simple terms, this IRD is like a translator for different types of TV signals. It can take in signals from antennas, satellites, cables, the internet, and other sources, and then it can change them into different types of signals or video formats, so you can watch them on your TV or send them over the internet.

  •  RF / IPTV / ASI INPUT  -  All Audio-Video Outputs incl. HDSDI, HDMI, CVBS, Suppoty SD and HD formats up to 1080p/60 
  • Tuner available as OFF AIR ATSC, QAM CABLE, ISDBT, DVBT, DVBC, DMBT - Any standard
  • 10/100 Etherent for IPTV multicast or unicast TS MPEG2/4 Input 
  • H.264 and MPEG-2 Hardware Decoding to HD-SDI, HDMI, YPbPr, and CVBS Outputs
  • Combine programs from both ASI and IP inputs to multiplexed ASI and IP Outputs
  • ASI  input for Remultiplexer option to create a new MUX out as well 48x ip streaming spts out for routing and distribution
  • Cam slot for tv programing description
  • Front panel video monitor for confidence monitoring and troubleshooting
  • Separate multiplexed program transport streams to SPTS IP outputs 32 Max
  • Web server interface for secure browser management and full front panel interface
  • Supports Closed Caption 608 and 708 systems, supports Dolby AC/3 Pass Through
Model Selection

H-IRD-V3s - Broadcast RF (Satellite DVB-S/S2) Decoder with SDI, ASI, IPTV  Output

H-IRD-V3-ATSC - Broadcast RF ATSC Off Air Decoder with SDI, ASI, IPTV  Output

H-IRD-V3-QAM - Broadcast RF QAM Decoder with SDI, ASI, IPTV  Output

H-IRD-V3-DVBT - Broadcast RF DVB-T Decoder with SDI, ASI, IPTV  Output

H-IRD-V3-ISDBT - Broadcast RF ISDB-T Decoder with SDI, ASI, IPTV  Output 


*All Specifications Subject to Change Without Notice

  • Input

RF Tuner - DVB-S/S2. ATSC Off Air, Cable QAM, DVB-T, ISDB-T (model dependent)
Network IP

  • Supported Output Resolutions

HD-SDI 1080i, 720p, 720i, 576i, 480i

HDMI 1080i, 720p, 720i

YPbPr 1080i, 720p, 720i

CVBS 576i, 480i

  • Video Codecs

H.264 - MPEG-2

  • Audio Codecs

MPEG1 Layer 2, MPEG2 Layer 2

 Dolby AC/3, HD-AAC V2, LC-AAC

  • ASI Input

1x BNC 188/204 format up to 200 Mbps

  • IP Input

1x RJ-45 10/100 UDP or RTP up to 85 Mbps

  • RF Input

1x Type-F

ATSC-T: 54-860 MHz  6M Bandwidth

QAM: 47-860 MHz  QAM16, 32, 64, 128, 256

DVB-S: 950-2150 MHz  Symbol Rate 2-45 MBaud

DVB-S2: 950-2150 MHz  QPSK 1-45 MBaud

DVB-T: 145-870 MHz  6, 7, 8 M Bandwidth

DVB-C: 45-870 MHz  QAM16, 32, 64, 128, 256

ISDB-T: 153-858 MHz  6, 7, 8 M Bandwidth

  • Audio Output

2x BNC - Analog Unbalanced

2x XLR - Digital AES/EBU

1x Toslink - Digital Optical

  • IP Transport Stream Output


1-32x SPTS UDP or RTP

  • ASI Transport Stream Output

2x ASI Multiplexed Output

2x ASI Tuner Pass Through

  • Management Interface

Web Based Browser Interface

Full Front Panel LCD Interface

Front Panel LCD Video Monitor

  • Dimensions

20 x 18 x 1~1/2 Inches 

  • Weight

7 lbs

  • Operating Temperature

28º ~110º F

Question and Answers
We have 2 ways to do it.
First H-NVS3500 is a SDI RTSP encoder/decoder, design to reliable send SDI over the public internet, doesn't requires big bandwidth to do it, just about 3Mbps
You would need to use 4pcs to do 2 Videos; 2 as encoders, 2 as a decoders
Or the secound option:
1pcs 2 x SDI encoder H-2SDI-QAM-IPLL  2 SDI input IP streams output
2pcs IRD decoder H-IRD-V3s IP input SDI output
The only way we can do DVBS-S2 to SDI would be using the H-IRD-V3s IRD decoder.
This is a multifunction device with a lot of different futures, one of them is DVBS-S2 to SDI /HDMI / CVBS video output.
It does have CI slot for the CI card, Common Interface (also called DVB-CI) is a technology which allows decryption of pay TV channels.
The Common Interface allows TV manufacturers to support many different pay TV stations, by allowing to plug in exchangeable conditional-access modules (CAM) for various encryption schemes. Smart cards and encryption          BISS Cisco Videoscape         VideoGuard Conax Irdeto Cryptoworks Digicipher HDCP KeyFly Nagravision PowerVu RAS SECA Mediaguard Verimatrix Viaccess
We do have a solution for integrated Video encoder and satellite DVB-S/2 modulator
please check these links:
SDI or HDMI Encoder / DVBS-s 2 modulator, that will be installed in your Transmitting Site
On the Receiving side, you can use Sat IRD to receive and decode sat signal to HDMI or SDI
Please see those links and specifications and let me know if that would work for you
You can use 1 IRD, but you would be able to get video from one or the other encoder or you could use 2 IRD's to receive both feeds at the same time
Yes, that is correct. The 8VSB will take the entire frequency and all data within it and output to the ASI. 
So if you have any subchannels, data like closed captions etc, everything will be passed onto the ASI TS. 

The IRD works as a Gateway, which means that if the Satellite RF signal carries MPEG4 and MPEG1 or AC3 audio, you will have exactly the same TS on the IP or ASI output with all encoded audios. We cannot transcode it to MPEG2. Basically, whatever goes in will go out.

If the Sat channel has multiple TS's, we can modify it in the MUX setting, but please note that we cannot modify the TS bitrate. Whatever TS is encoded, it will stay the same.

At the same time, we can decode the video and audio to SDI/HDMI/CVBS and Analog Audio. We can only decode 1 stereo audio of your choice. So, even if the TS has, let's say, 1 Spanish + 2 English audio tracks, we can decode one of them.

Since you need MPEG2 video, the easiest way would be to decode that signal to SDI and then re-encode it using an MPEG2/AC3 encoder.

like this one :


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User's Manual is avalible only for logged users.
User's Manual is avalible only for logged users.
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