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Description Features Drawings Model Selection Specification Q&A Documents
ISDB-T model description
12 HDMI input to CATV RF ISDB-T OFF AIR Modulation Output and IPTV output. PN: H-12HDMI-ISDBT-IPLL

12 HDMI Channels to CATV RF Coax Digital Modulator QAM, ATSC, DVB-T, ISDB-T, format up to 1080p60 low latency with IPTV Streamer and ASI Out

The new high capacity H-12HDMI-QAM-IPLL Encoder Modulator from Thor Broadcast has a new sophisticated redesigned platform for enabling modulation of up to 12 HDMI sources and 12 CVBS CC(Closed Caption) sources simultaneously. This unit has the ability to ingest IP Transport Streams and multiplex them among the RF output channels, similarly you can also input a single ATSC (or other RF modulation standard) and add its transport streams among the QAM output. This unit comes standard with a plethora of options to help you add extra transport streams from various media to build your own RF headend quickly and easily without extra hardware.

The H-12HDMI-QAM-IPLL supports MPEG2 and MPEG-4 AVC/H.264 video encoding and MPEG1 Layer II audio encoding (MPEG-2 AAC, MPEG-4 AAC Optional), Dolby Digital AC3, as well as AC3 pass through.

This unit has the ability to multiplex, create, and add program streams to your RF QAM cable channels cost-effective design make this device widely used in variety of digital distribution systems such as CATV headend cable systems

Create your own digital signage systems, and add HDMI sources to your existing QAM cable system in a single 1RU high density encoder modulator from Thor.



The Thor Broadcast HDMI Encoder modulator can be set up as a multi-channel video switcher so you can put multiple videos on one RF 6mhz frequency.

Since QAM 256 contains 38Mbps data storage, it means we can use all that bandwidth to place several programs via multiplexing on a single RF channel, each 6Mhz can carry any encoded video bitrate so long as they don't exceed the 38mbps total. For example, if we have a 4 source modulator, we can set the encoded bit rate on each video to 9.5Mbps, so 9.5 x 4 =  38Mbps. We can fit all of those programs in one QAM 256 channel.

So let's say that we choose 57mhz, which is CH2 on the QAM RF spectrum, we will be able to modulate 4 video's onto channels 2.1, 2.2, 2.3, 2.4 simultaneously.

This is important in case we want to insert multiple video programs on limited RF space occupied by different channels from the cable company; or other modulators creating channels in your CATV lineup.

  • 12 HDMI inputs with 12 CC inputs via CVBS
  • (Data 1 port) over UDP and RTP
  • MPEG1 Layer II; Dolby AC3, AC3 pass through ; MPEG-2 AAC, MPEG-4 AAC
  • HD (1080i/720p) to SD (576p/480p) downscale conversion
  • 1MPTS and 24 SPTS IP (DATA1 and DATA2 port) output over UDP, RTP/RTSP
  • ASI output mirrors one of the RF carriers
  • PID remapping/ accurate PCR adjusting/PSI/SI editing and inserting
  • Control via web management NMS
  • 16 Groups Multiplexing/Scrambling/ DVB-C QAM ANNEX A and B  Modulating (based on RF)
  • 8 Groups Multiplexing/ DVB-T/ATSC Modulating (based on RF)
  • 6 Groups Multiplexing / ISDB-T Modulating (based on RF)
  • Up to 16 MPTS IP (Data2 Port Only) output over UDP, RTP/RTSP (# of MPTS is based on RF standard of device) (16MPTS for DVB-C; 8MPTS for DVB-T/ATSC; and 6MPTS for ISDB-T)
Model Selection
  • H-12HDMI-QAM-IPLL  - 12 HDMI input to CATV RF QAM (CABLE) Modulation Output and IPTV output -Low Latency
  • H-12HDMI-ATSC-IPLL - 12 HDMI input to CATV RF ATSC OFF AIR Modulation Output and IPTV output -Low Latency
  • H-12HDMI-DVBT-IPLL - 12 HDMI input to CATV RF DVB-T OFF AIR Modulation Output and IPTV output -Low Latency
  • H-12HDMI-ISDBT-IPLL - 12 HDMI input to CATV RF ISDB-T OFF AIR Modulation Output and IPTV output -Low Latency


12 HDMI inputs

12 CC (Closed Caption, EIA608/EIA708) input, BNC interface



1920×1080_60P,1920×1080_50P,1920×1080_60i, 1920×1080_50i,1280×720_60P,1280×720_50P, 720×576_50i, 720×480_60i

Resolution Downsacle

1080i/720p to 576p/480p



0.8~19Mbps each channel

Rate Control CBR/VBR



MPEG1 Layer II, AC3 pass through

(MPEG-2 AAC, MPEG-4 AAC Optional)

Sampling rate 48KHz

Audio Gain

0-400% adjustable


64~320Kbps each channel (each channel)


Maximum PID


180 input per channel

Function PID remapping (automatically or manually)

Accurate PCR adjusting

Generate PSI/ SI table automatically

Stream output

1 MPTS and 24 SPTS IP output over UDP and RTP/RTSP, 2*1000M Base-T Ethernet interface, Data 1 and Data 2

1 ASI output mirros the MPTS output

System function

Network management (WEB)

Ethernet software upgrade

Miscellaneous Dimension (W×L×H) 19"×17.3"×1.7mm 1RU Rackmount Chassis
Approx weight 8kg - 16lb

0~45°C (Operational); -20~80°C (Storage)

Power requirements

AC 110V± 10%, 50/60Hz, AC 220 ± 10%, 50/60Hz



Question and Answers
As you know, the manual states that I am supposed to use DATA 2 for the IP Stream output. As we noted under the IP Stream settings, DATA 2 is the only port that is referenced for IP Stream output. I can prove that DATA 2 is the IP Stream output, as when I disable the TS output on DATA 2 my data activity at the switch ceases on both Data 1 and Data 2 ports. Also, when I have the TS output enabled for Data 2, I only get switch activity when Data 2 is connected to the switch. Disconnecting Data 2 while Data 1 is still connected stops the switch activity. Another observation: When I have set the DATA 1 IP to, I can ping this address when either the DATA 1 or the DATA 2 cable is connected. This tells me that DATA 1 and DATA 2 are using the same IP Address.

DATA1 is GE port and for IP input, DATA2 is GE port and for IP output. DATA3 is for upgrade encoding module. DATA1 and DATA2 are share port. same IP for them . it's like a small 2 layer switch, through many ports but only have one IP address. If you need IP input and output at the same time, please connect DATA1 and DATA2 to one VLAN.
User's Manual is avalible only for logged users.
User's Manual is avalible only for logged users.
User's Manual is avalible only for logged users.
User's Manual is avalible only for logged users.
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