Inputs are :
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Thor Broadcast Transmodulation systems are a 4 RF input modulator and program stream multiplexer with CAM support via 4 CI slots. They are available for QAM (DVB-C), Satellite (DVB-S/S2), and terrestrial (ATSC)(DVB-T) radio frequency RF signal sources. RF signal types can easily be interchanged by removing the modules(you can not upload firmware to change the modulation functionality, this is hardware based). Full configuration and management is available on the front panel LCD and keypad, and remote access and monitoring is available on a dedicated NMS network port for control through a web browser. Program streams available as well as the IP and ASI inputs can be multiplexed and remapped in any order. Independent output pipes for both ASI and IP are fully configurable. Industry standard support for Conditional Access is provided by 4 Common Interface (CI) slots. These slots support CAM modules such as CableCard or any other system using the PCMCIA interface. This platform is ideal for program aggregation and multiplexing in cable TV headends and corporate MATV systems.
H-4-ATSC-QAM - 4 OFF AIR ATSC channels (frequencies) to CATV QAM , IP, ASI
H-4-DVBS2-QAM - 4 satellite channels (frequencies) to CATV QAM , IP, ASI
H-4-DVB-T-QAM - 4 OFF AIR DVB-T channels (frequencies) to CATV QAM , IP, ASI
H-4-ATSC-ATSC - 4 OFF AIR ATSC channels (frequencies) to ATSC trans - modulator, + IP +ASI
H-4-DVBT-QAM - 4 OFF AIR DVB-T channels (frequencies) to QAM trans- modulator, + IP, ASI
H-4-DVBS2-ATSC - 4 satellite channels (frequencies) to ATSC trans- modulator, + IP, ASI
H-4-DVBS2-DVBT - 4 satellite channels (frequencies) to DVB-T trans- modulator, + IP, ASI
H-4-DVBS2-ISDB-T - 4 satellite channels (frequencies) to ISDB-T trans- modulator, + IP, ASI
The Need for RF Standard Transmodulators in ATSC to QAM, DVB-S2 to QAM, and DVB-S2 to ATSC Conversions
In the ever-evolving landscape of digital broadcasting, the demand for versatile and adaptive solutions has become paramount. One such solution that plays a pivotal role in meeting this demand is the RF standard transmodulator. This article explores the compelling reasons behind the necessity for RF standard transmodulators, particularly focusing on the conversions from ATSC to QAM, DVB-S2 to QAM, and DVB-S2 to ATSC.
Broadcasters encounter diverse standards when delivering content to viewers. ATSC and QAM represent different modulation schemes used in North America, each with its unique characteristics. On the other hand, DVB-S2 is a standard used for satellite broadcasting, and the need arises to seamlessly integrate satellite signals into cable networks.
Consider a scenario where a broadcaster operates with an ATSC standard but wishes to extend the reach of their content to cable subscribers using QAM modulation. An RF standard transmodulator serves as the bridge, converting the ATSC signal into QAM without compromising quality. This flexibility allows broadcasters to cater to a wider audience and explore new markets without the need for extensive infrastructure changes.
Satellite broadcasters face a similar challenge when aiming to deliver content to cable subscribers. By employing an RF standard transmodulator, the DVB-S2 satellite signal can be seamlessly transmodulated into QAM for cable distribution. This conversion preserves the integrity of the signal, ensuring that viewers receive a high-quality and reliable broadcast experience.
In some instances, broadcasters may want to integrate satellite content into an ATSC-based system. Here, the RF standard transmodulator becomes a crucial tool for converting DVB-S2 satellite signals to the ATSC standard. This enables a seamless integration of satellite programming into terrestrial networks, providing broadcasters with the flexibility to offer diverse content to their audience.
Versatility: RF standard transmodulators offer unparalleled versatility by facilitating seamless conversions between different broadcast standards, allowing broadcasters to adapt to evolving market demands.
Cost-Effective Solutions: Instead of investing in entirely new infrastructure, transmodulation provides a cost-effective solution to extend the reach of content across different platforms.
Preservation of Signal Quality: These transmodulators are designed to maintain the integrity and quality of the original signal during the conversion process, ensuring a superior viewing experience for end-users.
In a landscape where content delivery standards vary, RF standard transmodulators emerge as indispensable tools for broadcasters seeking to expand their reach and diversify their content distribution. The case studies of ATSC to QAM, DVB-S2 to QAM, and DVB-S2 to ATSC conversions illustrate the practicality and benefits of these transmodulation solutions. As the broadcasting industry continues to evolve, RF standard transmodulators stand as key enablers, providing broadcasters with the flexibility needed to navigate the complexities of modern content distribution.
Input |
4 S/S2 Tuner and 2 ASI input |
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Tuner Section
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DVB-S |
Input Frequency |
950-2150MHz |
Symbol rate |
2-45Msps |
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Signal Strength |
-65~-25dBm |
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FEC Demodulation |
1/2, 2/3, 3/4, 5/6, 7/8 QPSK |
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DVB-S2 |
Input Frequency |
950-2150MHz |
|
Symbol rate |
QPSK 1~45Mbauds 8PSK 2~30Mbauds |
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Code rate |
1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 |
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Demodulation Mode |
QPSK, 8PSK |
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ATSC |
Input Frequency |
30-999Mhz |
Standard |
ATSC A/53 |
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Constellation |
8VSB |
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MER |
/42 |
Multiplexing |
Maximum PID Remapping |
128per input channel |
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Function |
PID remapping (automatically or manually) |
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Accurate PCR adjusting |
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Generate PSI/SI table automatically |
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Modulation |
DVB-C |
Standard |
J.83A, J.83B, J.83C |
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MER |
≥42dB |
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RF frequency |
30~950MHz, 1KHz step |
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RF output level |
-30.0~ 0.0 dbm (77~107 dbµV), 0.1db step |
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Symbol rate |
2.5 – 4.66 Msps, 5.0 - 8.0 Msps |
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J.83A |
Constellation |
16/32/64/128/256QAM |
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bandwidth |
8M |
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J.83B |
Constellation |
64QAM, 256QAM |
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bandwidth |
6M |
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J.83C |
Constellation |
64QAM, 256QAM |
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bandwidth |
6M |
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System |
Local interface |
LCD + control buttons |
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Remote management |
Web NMS |
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Stream Out |
2 ASI out(BNC type) |
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IP (4*MPTS over UDP) out (RJ45, 1000M) UDP.RTP,RTSP |
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Upgrading |
Web and USB |
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General |
Dimension |
482mm×300mm×44.5mm(W*D*H) |
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Weight |
3.7kg |
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Temperature |
0~45(Operation) ; -20~80(Storage) |
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Power |
AC 100V±1050/60Hz; AC 220V±10%, 50/60HZ |
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Consumption |
25W |
If you need to modulate 5 programs on one ATSC RF channel, I would recommend
2pcs H-4ADHD-ATSC-IPLL connected together via ASI
The H-4ADHD is a 4 ch HDMI encoder/ ATSC modulator with ASI input and
ASI output, unit has a TS multiplexer built into it.
You can use the first one to produce 4TS. and you can bring the 5th
from the second unit via ASI from the second unit.
I would like to know that In order to fit 5 TS programs into one ATSC
frequency, they would need to be encoded at 19/5 = 3.8Mbps which is a
a little low for decent video quality in MPEG2 encoding, which you must
use for of the air transmission
Currently, the H-4-ATSC-ATSC is no available longer, the only
unit that can be used as a translator is:
H-16ATSC-IP-16ATSC : 16 ATSC to 16 ATSC and IP out
https://thorbroadcast.com/product/16-rf-tuners-to-iptv-ts-qam-output.html/116
QAM, ATSC, DVB -T, ISDB -T Modulation, Thor 1, 4, or 8 x HDMI Digital RF Modulator is an all-in-one device integrating MPEG2 encoding and modulation to convert audio/video signals into ATSC / DVB-C QAM DVB-T / ISDB-T RF output. Supports Low Latency Mode for live event applications, HDCP compliant, works with any HDMI source like DVD Player or Cable Satellite STB up to 1080p/60 resolution The 8-channel model in addition to 8HDMI inputs has also 8 CVBS baseband video inputs, which can be selected, those inputs could be also used for Closed Captioning Inputs.
Your choice of selecting 8 HDMI or SDI video sources. It converts 8 HDMI/SDI sources to individual CATV RF DVB-C QAM or Off-Air ATSC channels. It also supports European DVB-T and Latin America ISDB-T modulation standards. Support Low Latency and full HDTV up to 1080p Video