[opendtv] Re: Letter to EE Times on Firewire

 
Norair's asserts below: 
 
You'd have to wonder why anyone would be eager to switch to a  new technology 
(Ethernet) that, so far, has never been used for AV and exists on  no AV 
products that I'm aware of.
 
First of all, the first Ethernet packet sent by Bob Metcalf on May 23,  1973, 
so it's not exactly "new technology".
 
I have a table of people doing Ethernet multichannel audio that had gotten  
so large I can no longer fit it on a PowerPoint slide.  The video list is a  
bit shorter, sure.  If you want to only go a few feet, sure FireWire is  fine, 
but that does not describe a broadcast installation, with stuff spread all  
over the building.  That's a classic Ethernet installation (maximum  distance 
328 
ft. - farther if you use Belden cable and don't mind the analyzer  
continually telling you "failed : distance".) There's no limit to NIC cards on  
an 
Ethernet network.  Well, if there is, it's a lot more than the 63  devices 
allowed 
on FireWire.
 
I'm not worried.  If it ain't broke, don't fix it. Those small edit  suites 
will continue to work isolated from the rooms around them.  When  they have to 
ship files to a server or Master Control, then they'll  understand!
 
Steve Lampen
Belden Cable
Here's  one Firewire proponent.

His main argument seems to be that you can't  daisy chain Ethernets. Ever
since 10BASE2, true enough. In a home net  that's bigger than just a
single entertainment system, I'm not sure that  consideration is  valid,
however.

Bert

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http://www.eet.com/news/latest/showArticle.jhtml?articleID=3D187201629

Digital  artists have stuck with FireWire because it works

Loring Wirbel's  Opinion piece "Mac artistes, get with the times" (May 1,
page 4) takes a  needless jab at the digital art community. This
community is often an early  adopter, but with FireWire the situation is
different. Almost every piece  of high-end AV hardware works with
FireWire, and so does Apple's Final Cut  Pro. You'd have to wonder why
anyone would be eager to switch to a new  technology (Ethernet) that, so
far, has never been used for AV and exists  on no AV products that I'm
aware of.=20

FireWire's  multipoint-to-multipoint capabilities suit it for on-location
work or for  any device network that frequently changes. Ethernet
requires  infrastructure, adding cost and complexity. I need only point
to another  article in the same issue ["1394 primed for home net
revival," page 1] to  show that FireWire still has merit and might yet
deliver on its promise as  a pervasive network for AV components.

John P. Norair
Design  Engineer
Proximities Inc.
Melbourne,  Fla.


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