On Wed, May 03, 2006 at 07:19:51PM -0400, [EMAIL PROTECTED] wrote:
>
> John,
>
> 100m is the limit for ethernet. I don't know of much that could use that
> either. (maybe a concert in a football stadium? The longest run I've seen
> was about 27m in a church.
By the time you run from the console in the back of the hall, around
the seating area, and across the stage, 27m sounds marginal. 100m is
probably enough in most situations, though.
I just looked that up in the O'Reilly Ethernet book. 100BaseTX and
1000BaseT go 100m. 100BaseFX (fiber) is rated to 432m. The nice thing
about that is, external media converters can be used when needed, so it
doesn't need to be built in. I don't know what the aviation cables are
rated for, but I believe they use the same electrical interface as UTP, just
tougher cables and connectors.
> google search indicates 48 channels (is that 48 each way?
Shouldn't need to be. You don't generally have anywhere near as
many stage monitors as mikes and instrument pickups.
> Jack,
>
> MIL spec connectors could be doable - depends on cost/availability. If
> someone is willing to pay for a run with such, I'm sure OpenGraphics could
> arrange for whatever connectors they want :)
It will take some poking around to find out what's in the pipeline.
Regular UTP connectors have no strain relief at all, so it doesn't take much
pulling and bending before the conductors get abused.
> When I say PnP, I mean anything you plug in should be immediately
> recognized and available, without needing any device specific drivers or
> special configuration beyond backplane assignment. Having serial numbers
> on units so preset configurations can be loaded no matter where they are
> connected would need to be supported as well.
AES50 might have some protocol features that would imply a
particular solution. Permanent factory-assigned serial numbers are one way;
thumbwheel address switches are another. The latter gives shorter
addresses, which might be an advantage in setting up the console, and avoids
the administrative hassles of setting up a manufacturer registry and serial
number logs. But if there's already an accepted standard, there are strong
reasons to conform to it.
> Since this thing is a computer in its own right, stand alone units could
> be done in the future. And, as Dieter said, the computer doesn't have to
> be in the control room, or on stage. In the same room as the amps, or
> next door (so those cables are SHORT) would be best.
In field recording, there's no soundproof wall between the
engineer's station and the audience, and no nearby room to put extra gear
in. Of course, many situations might be served by just putting a monster
hard disk in the console.
> Flexible is the watchword :)
Oh, yeah.
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