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mpeg2 ASI over Fiber Miniconverter

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Bradley Green
mpeg2 ASI over Fiber Miniconverter
on Dec 12, 2009 at 4:18:28 am

Has anyone ever used the miniconverters to send an ASI feed over fiber. Blackmagic says it should work but they've never tested it. Any personal experience with the miniconverter would be great! I'm trying to avoid spending 2-3 times as much on rattlers...

Thanks-
Bradley


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Bob Zelin
Re: mpeg2 ASI over Fiber Miniconverter
on Dec 12, 2009 at 4:29:22 pm

can you please tell me what ASI is, and why it is used ?

Bob Zelin




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Bradley Green
Re: mpeg2 ASI over Fiber Miniconverter
on Dec 12, 2009 at 5:55:35 pm

It is an encoded hd mpeg2 transport stream ready to be inserted into a 6 mhz slot on the cable system. It would be coming out of a ZEEVEE Pro 250 going to the fiber converter, then across campus, then to another fiber converter, and into a RF combiner at the cable head end.


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maurice jansen
Re: mpeg2 ASI over Fiber Miniconverter
on Dec 14, 2009 at 9:21:49 pm

hi as you might know

SDI is NRZI encoded (non return to zero inverted) and not polarity sensitive. (this is where the miniconvertor's are of coarse made for)

ASI is polarity sensitive and can give you different result's
if your working enviroment is fixed try to get a demo unit. if it works buy it if not go on searching. in a more dynamic working enviroment you have to test with both polarity's. a lot of cheap SDI-VDA often have one straight and multiple polarity inverted output's(or the other way around) you can use this to find out if the output of the far end is polarity sensitive.

great
Maurice



People saying they don't make mistake's often make nothing at all!


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maurice jansen
Re: mpeg2 ASI over Fiber Miniconverter
on Dec 14, 2009 at 9:33:48 pm

by the way

i'm looking for a budget one box HD to DVB-C Encoder/modulator

unfortunatly the zoovoo does not support signals used in europe.
if any one have a suggestion plese let me know

grt
Maurice

People saying they don't make mistake's often make nothing at all!


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Bradley Green
Re: mpeg2 ASI over Fiber Miniconverter
on Dec 15, 2009 at 2:45:29 am

Its a permanent solution- so I'm going to try to get a demo from a dealer.
Thanks for the advice.

If anyone else has any personal experience with these I'd love to here it.

Thanks-

Bradley


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Kristian Lam
Re: mpeg2 ASI over Fiber Miniconverter
on Dec 15, 2009 at 2:59:29 am

Hi,

Yes, DVB-ASI will be fine.

regards

Kristian Lam
Blackmagic Design


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Andrew Janowski
Re: mpeg2 ASI over Fiber Miniconverter
on Aug 6, 2011 at 4:54:19 am

We use these converters all the time. They are very useful units. Depending on the optics they can transport the signal to distances of up to 120 Km. You can also carry a lot of video signals with this approach. ASI is a very useful protocol for video transport. DVB-ASI is a digital video transport stream that runs at 270 Mbit and carries a total of 210 Mbit for video bandwidth. ASI is used to carry MPEG transport streams, known as programs.

ASI is a foundation of the modern broadcasting industry. We deal with these units on a daily basis, for transporting ASI signals from television studios to cable company headends. The beauty of ASI is that you can do whatever you want with that digital bandwidth. You can pack as many as 10 standard definition television programs onto one transport stream.

I'm an engineer at a fiber optics telecom company thorfiber http://www.thorfiber.com . I would be happy to answer any questions about this equipment or related hardware.

http://www.thorfiber.com/


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Andrew Janowski
Re: mpeg2 ASI over Fiber Miniconverter
on Jan 22, 2012 at 7:05:41 am

we have new unit witch will take multiple ASI to fiber .
We can support up to 16 individual DVB-ASI and transport from place to place over the fiber , same unit support also SD-SDI http://thorbroadcast.com/sklep-202 .when the fiber is not available It is also possible to to send ASI over IP network or DS3 line or T1 line . ASI to IP unit can take multiplexed ASI up to 60Mbps , http://thorbroadcast.com/sklep-207/produkt-45 , plug and play
please ask me any question about that .

http://www.thorfiber.com/


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