DVB-S2 or ATSC to ASI or IP

Question :
The IRD V3 S2 is only converting single carrier into ASI, my project is to convert the whole band of L-band (950Mhz-2150MHz) to ASI and transmit it to the other site since I have unused ASI over Fiber converter. Just like F-Lband model that carry the whole l-band spectrum over fiber, my goal is to convert the whole spectrum (950-2150MHz) into ASI. So would it be possible if I use it F-Lband together with F-1ASI to get the ASI out?
Unfortunately this is impossible,
Each L -band channel needs to be decoded first in order to move data from RF carriers to ASI or IP
Each L-Band carrier might contain up to 38Mbps data, Maximum ASI data rate is 270Mbps

We have one unit which has 8 tuners, so it will output TS’s from 8 separate L-band frequencies :

The best option would be using point to point L-band over fiber, because you do not need any conversion.
but, you need to have dark fiber. if you do not have any additional fiber but you have ASI over fiber unit, and fiber between TX/RX we can make you special CWDM pass through equipment, we will utilize the same fiber as ASI but we will modulate L-band on the different color of light (optical wavelength).
Please take look on that product, allows us to mux different signals on the same fiber.

Converting l-band DVB-S2 RF to ASI / IP

question :
Do you have a solution for converting l-band to ASI/IP?
If I’m using F-LBand (950-2150Mhz) in conjunction with F-1ASI to convert L-band into ASI, would it be possible? And can I do the reverse on the other site (ASI to L-band)?

Yes all of our Lband products will carry the entire spectrum 900-2400mhz. We can also do 45-3000mhz as well if you are interested in carrying the catv spectrum as well.

Please take a look at the following products:

Single Channel Lband over Fiber for transmitter and receiver
4x Lband over Single Mode Fiber for transmitter and receiver.

Question :
1. Referring to your product 4xl-band, does it consider multiplexing all the 4 l-bands into 1 single fiber core?

Yes all 4 Lband polarities are multiplexed onto 1 single mode fiber. We use SC/APC fiber connectors.

2. Do you have a solution for converting l-band to ASI/IP?

Of course, our most popular unit for converting Lband to ASI and IP is our V3-S2 IRD:
it Has ATSC or L-band DVB-S-S2 tuner and IP output, it has also SDI video output

3G SDI over fiber $499 — Now least expensive units on the market

3G SDI over fiber $499 New least expensive on the market !
– 1ch x 3G HD SDI Video signal

– 1ch x uni-directional data(control) signal

– Support SMPTE-424M, SMPTE-292M, SMPTE-259M and others

– Error free at Pathological pattern signal

– Including equalizer and cable driver

– 20km transmission distance(using singlemode fiber)

What is 3G SDI ? Why do we need fiber to send 3G SDI for long distance ?

– 75ohm BNC to ST optical connector3G sdi over fiber application drawing

4 Way Return Return Path Optical Receiver

thumbnail of CATV RF over fiber with Return path application drawinghttp://thorbroadcast.com/sklep-209/produkt-191

Thor fiberF-RF-RP4Rx

Indoor Optical Receiver  A standard 19-inch 1U indoor optical receiver, beautifully shaped, outstanding in index, the indoor optical receiver can be provided with the return path transmitter modules. High in receiving sensitivity, low in noise figure, the four way return optical receiving modules of the same performance ensure the high quality transmission of four way return transmission signals. 20dB output level range Power supply is AC220V.

· Two working windows of 1310nm and 1550nm;
Radio frequency bandwidth: 5-200MHz
· Optional radio frequency bandwidth, wide optical input power range and output level range
· Adopt high-quality switching mode voltage stabilizer

Digital T V and MPEG Standards in digital modulator history

  Digital T V and MPEG Standards in digital modulator

The inspiration for HDTV
The main force for top notch TV (HDTV) originated from wide screen
motion pictures. Not long after wide screen was presented, motion picture makers found
that onlookers situated in the principal lines delighted in a larger amount of cooperation in
the activity, which was unrealistic with routine motion pictures. Apparently, having
a wide field of perspective of the screen expanded altogether the sentiment “being
there.” In the mid 1980s, motion picture makers were offered a top notch TV framework created by SONY and NHK.
In the late 1970s, this framework was called NHK Hey Vision and it was equivalent to
35-mm film.16 Taking after the acquaintance of HDTV with film industry, interest
started to manufacture and create HDTV framework for business television. Such a
framework would have generally double the quantity of vertical and level lines
than the traditional framework. The most noteworthy issue confronting the HDTV standard is like the issue confronted by shading television in 1954. There are roughly
76 Section 3
600 million TVs on the planet and the basic inquiry is whether the new HDTV
standard ought to be good with the present shading television principles or supplant the
existing standard, or whether it ought to be at the same time telecast with existing
principles, realizing that current benchmarks will eliminate after some time. In 1957, the
U.S. set a point of reference by picking similarity when building up the shading television standard. The extra chrominance signal made some minor transporter interface issues; notwithstanding, both monochrome and shading TVs could handle the picture and
sound of the same sign.
The fundamental idea driving HDTV is not to expand the definition per unit of
range, yet build the rate of visual field contained by the picture. The
larger part of proposed simple and computerized HDTV are moving in the direction of a surmised
100% expansion in the quantity of even and vertical pixels (Sec. 3.2.1). This
means 1 MB for each casing with approximately 1000 lines containing 1000 flat
focuses per line or one million PELs. This outcomes in a change by a variable of
a few in the edge of vertical and flat field; moreover, HDTV proposes to change the perspective proportion from 4/3 to 16/9, which makes the screen picture
look more like a picture on a film screen. Note that the angle proportion of a photo is
characterized as the proportion of the photo width W to its tallness H.
Specialized impediments and idea develo pment of HDTV
In past segments it was clarified that an ordinary NTSC picture of 525 even entwined lines and a determination of 427 pixels or picture components, and a sweep rate of
29.97 Hz would require a BW of 3.35 MHz. On account of HDTV with 1050 lines containing 600 pixels for every line, keeping the same edge rate with no entwine would
require a BW of 18.88 MHz, which is an issue. The current physical (standard air
transmission as opposed to satellite) station assignments are constrained to 6 MHz as it were.
The inquiry is the thing that choices are accessible on account of 20 MHz BW for HDTV:15
1. Change channel distribution from 6 to 20 MHz.
2. Pack the sign to fit inside the 6-MHz BW.
3. Dispense numerous channels, two with pressure or three without, for

HDTV signal.
The initial two alternatives are basically contradictory with current NTSC administration.
Henceforth, the main residual alternative is to have separate channels for NTSC and
HDTV. Thusly similarity is kept up with current NTSC since the first
6 MHz of a sign could be devoted to the standard NTSC and remaining
would be the extra argumentation signal for HDTV. There are a few
suppositions about HDTV transport: the principal perspective is that these frameworks will be at last effective outside the routine channels of physical TV,
furthermore, another perspective is that HDTV must utilize existing physical telecast stations.
The framework would bolster two, and just two, examining rates: (1) 1080
dynamic lines with 1920 square pixels-per-line entwine examined at 59.94
what’s more, 60 fields/s, and (2) 720 dynamic lines with 1280 pixels-per-line dynamically filtered at 59.94 and 60 outlines/s. Both organizations would likewise
work in the dynamic checking mode at 30 and 24 outlines/s.
. The framework would utilize MPEG-2 perfect video pressure and
transport frameworks.
The framework would utilize the Dolby AC3 3, 384 Kb/s sound system.26


Why SDI over fiber?

Fiber Optic Video Distribution:

Why SDI over fiber?

Latency is one of the prime reasons to use fiber. As the high speed serial signal
enters the converter, that input is used to directly drive a laser circuit. There is no
manipulation or buffering of the signal at all. The only delay is the time it takes the
laser to respond to the input signal, and for the delay in fiber. Fiber delay is typically
around 5 microseconds per kilometer and we don’t have very much. The end to end
delay of this system will likely measure less than 100 microseconds. Far below 1ms.

SDI transmitters use 3 Gbps optics (twice the bandwidth of a DVI link.) 10-bit TMDS
link (DVI) operates at up to 165 MHz and offers 1.65Gbps of bandwidth. This is
enough to operate a digital flat panel display at 1920 x 1080 resolution refreshed at
60 Hz.” A duel link will double this .

Deployment of 3G-SDI links in a network array allows for future integration of higher
resolution displays such as 2k and 4k video systems.

No codec / No IP/No packetizing means no latency nor network collisions/delays

High speed SDI optical network allows Digital video to be pulled down/uploaded
from any station on the network.

SDI was developed for the pro video industry with the goal being performance,
while DVI is a consumer standard designed around content protection.

Many professional routing and switching systems are available for SDI to allow
further control and management features to be integrated in the future.

Uses single BNC cable. Less real estate on a unit and pushed pin, etc are not any

The proposed system combines a
dedicated high speed optical Ethernet
network with a purpose built SDI
broadcast distribution system

Unlike other software approaches
(Video over IP ,PC over IP) this is a
hardware solution that multiplexes
Audio , Video and IP Over Fiber for
exceptional capacity and speed.

Supports 1920 x 1200 video

Can be used together with any other IP
distribution system

Utilizes the Fiber Optic Links already in

Deltacast 3G-SDI cards are able to output
SDI video at 1920×1200…up to 4k!

Provides real time video and audio with
less than 1ms delay.

Employs Wavelength Division
Multiplexing of Video and ENET(IP) for
control signals

Key Drivers:

Minimize Subsystem Impact


1920 x 1200 video Resolution

Utilize in place Fiber Optic links

Consider Long Term Goals::

– Co-locating all of the display servers/processors

– Move to Larger ,Multiple (5) Display areas (40in)
with attendant Higher resolution

Reduce Display area Footprint (ORP)

To combine many SDI on one fiber ,CWDM multiplexation could be use :

The Thor system uses CWDM filters to control the flow of optical channels.

Two channels are used for IP communication between an SFP based optical switch
and the chassis Enet cards. These two wavelengths are filtered off at the input to the
CWDM combiner.

The remaining wavelengths are combined via a common Optical PLC coupler.

Any optical signal inserted at any Chassis station will be available to all other

stations with the proper receiver card installed.

Optical wavelengths are independent from each other and can be sent to different
places. Each wavelength functions as an independent optical channel and can carry
any type of data.

Can you send L-band RF signal over the multimode fiber

Good morning Thor Fiber,

I hope you can help us out a as we are looking for RF (Satellite dish) over multimode fiber, satellite fiber extender and I thought maybe you guys have something that will work for this.


Unfortunately you can not pass RF on Multimode fiber. Even more so when you’re referring to satellite, or L-Band over Fiber which is a much higher frequency range.
The only products we carry that convert Lband to Light, and vice-versa:
F-Lband-TxRx  – single LNB input
F-LB41-CWDM-TxRx – For multi-LNB inputs
If you’re able to install some singlemode fiber then we have several options to choose from depending on what kind of satellite dish you have. But unfortunately at this time it’s really quite impossible to put Lband on multimode fiber, the physical characteristics of the actual MM fiber itself won’t allow RF to pass through it without severe degradation of the signal, hence why generally all RF is always used with singlemode fiber.
Thank you for your message as a integration/development company for the private yachting industrie we hope you can understand that someone miscalculated that it could be possible over multimode… So what happend is that there are only multimode fiber cables and the Yacht ceilings are already closed, why we won’t open them? This because it will cost a fortune so that’s why I hope you can help us out and maybe you can think about something else that will be possible?
Yes we are fully aware that this might be troubling for you, I do apologize. We work with many marine and offshore companies and help them plan and design some portions of their rigs or boats, generally they’re able to pull more cable. Unfortunately the problem lies within the core of multimode fiber- its diameter is much greater than singlemode. For RF CATV 45-870Mhz you might be able to pull a single channel or two (at most) on multimode, for L-band between 1Ghz-2.7Ghz you’d be very hard pressed to squeeze a single channel off a satellite dish. As I noted, it’s impossible because multimode can not carry that kind of signal, the core of the fiber is too wide, creates too much degradation and refraction and will not carry the signal.The SingleMode fiber core is much smaller and is able to carry the signal much better without any obstructions. This is also why our entire line of RF over Fiber products also will only work with single mode, preferred connector is SC/APC.
We would really like to help you, as noted we help a few companies in the Mediterranean with yachts and boats; this is not a new endeavour for us, we just shipped them more products last week; however the problem is the fiber.
The only other alternative would be putting satellite STB close to the dish and extend HDMI output over the singlemode fiber, but you would be limited only to the 1 TV
The optical HDMI Receiver has IR detector and send the IR signal to the transmitter, so you can remotely change the channel on ths STB. I hope it helps

Thor Fiber utilized in the design and operation of the B2 Test Stand Video System at the NASA John C. Stennis

Thor is a proud to produce HD/SD  SDI over fiber transmitter receivers  for NASA:
Added: Jun 22, 2016 4:18 pm

The NASA/SSC Office of Procurement intends to issue a sole source, firm-fixed price contract to Thor Fiber for the procurement of fiber optic transmitters and receivers from Thor Fiber utilized in the design and operation of the B2 Test Stand Video System at the NASA John C. Stennis Space Center. There will be only one award made for this requirement. This is a sole source commercial acquisition under the authority of FAR Part 12 and FAR Subpart 13.5. The Government believes only one responsible source can provide the services that will satisfy the Agency’s requirements. This notice of intent is not a Request for Quote (RFQ) for competition. Interested organizations may submit their product capabilities and qualifications to perform the effort, in writing, to the identified point of contact not later than 3:00 p.m. (local time) on 28 June 2016. Statement of capabilities must contain sufficient details to review vendor’s capabilities. Submissions will be evaluated solely for the purpose of determining whether or not to conduct this procurement on a competitive basis. Oral communications are not acceptable in response to this notice. A determination by the Government not to compete this proposed effort on a full and open competition basis, based upon responses to this notice, is solely within the discretion of the Government. This acquisition is subject to a higher-level quality requirement – ISO 9001. The NAICS Code and Size Standard are 334220 and 1250 employees respectively. FOB is destination. It is anticipated that a solicitation will be issued to Thor Fiber on or about 1 July 2016 with their response due NLT 3:00 p.m. 12 July 2016. All questions regarding this acquisition shall be submitted in writing to the Contract Specialist at melissa.r.wagner@nasa.gov not later than 3:00 pm CST on 27 June 2016. An ombudsman has been appointed; the installation Ombudsman is Mr. Kenneth R. Human at ken.r.human@nasa.gov.
These following items are requested for procurement to support the video system at the B2 Test Stand:
• 8-SDI fiber optic Transmitters on single SM fiber and 8-ch CWDM MUX/DEMUX in 2U enclosure DC power Supply.
• 8-SDI fiber optic Receivers on single SM fiber and 8-ch CWDM MUX/DEMUX in 2U enclosure AC power Supply.
• 24 PORT 10/100/1000 Switch / 10G SFP – CWDM – 1470/1490. Supports Power 110-220VAC 50/60Hz

Added: Jun 23, 2016 11:28 am

Qty        Unit           Description
15          ea             8-SDI fiber optic Transmitters on single SM fiber and 8-ch CWDM
MUX/DEMUX in 2U enclosure DC power Supply

15          ea             8-SDI fiber optic Receivers on single SM fiber and 8-ch CWDM
MUX/DEMUX in 2U enclosure AC power Supply

29          ea            24 PORT 10/100/1000 Switch / 10G SFP – CWDM – 1470/1490.
Supports Power 110-220VAC 50/60Hz
(NOTE: 15/ea 110V Power and 14/ea 220VAC Power)

How to use digital modulator as a chap audio video ASI or IP HD encoder MPEG2 or H.264

Question :
Please I would like to know if you have any simple converter so I can put is analog video and audio and get it out as an ASI stream? My connections are RCA composite video and audio:

reply :
Hello John,

Thank you for contact us
To convert analog Audio Video to ASI , Video need to be encoded to MPEG TS (transport Stream)
You can encode it as a MPEG2 or H.264,
Also audio need to ne encoder as a MPEG1 or 2 or Dolby AC3
Do you know what encoding do you need ? if not not, than what ASI will use for ?

This is encoder digital modulator with the we AV CVBS Input ASI /IP and CATV RF Output.
This is a least expensive way

Please let me know if you are interested