Streaming HD?

Hi,
Was just looking for some advice on my setup.
I have the dual band wireless N Airport Extreme router in the family room.
On the other side of the wall I have an X-Box 360 and Tivo that I'd like to stream HD to from my Mac in the family room.
I purchased a pair of Netgear over-the-powerline adapters but they are kind of clunky and not fitting in well with everything else I have plugged in.
I was wondering if I went and got an Airport Express N, connected that in the living room as a bridge to the wireless network, then ran from the ethernet port to a switch which was in turn connected to the X-Box/Tivo, would that be fast enough to stream 720p?
Anyone have a setup like this?
Thanks
Dave

Dave, welcome the the discussions!
I doubt that you will get any definitive answers on your questions since wireless is so variable in its performance. In theory, it should work but, it will probably boil down to one of those "you won't really know until you try" things.
My experience with Direct TV's On Demand service was far superior using powerline adapters than using a very good "n" wireless network that otherwise performs very well.
But, your mileage may vary. Check with your Apple reseller to make sure you could return the Express if it doesn't do what you want.

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Warning: This is a long post with several questions. My appologies in advance.
I am a physics professor at a small liberal-arts college, and will be replacing a very old multi-channel analyzer for doing basic gamma-ray spectroscopy. I would like to get a complete PXI system for maximum flexability. Hopefully this configuration could be used for a lot of other experiments such as pulsed NMR. But the most demanding role of the equipment would be gamma-ray spectroscopy, so I'll focus on that.
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Otherwise, am I on the right track in general on this kind of system, or badly mistaken about some issue? Just want some reassurance before taking the plunge.

drnikitin,
The reason you did not find the spec for the rearm time for
the 5133 is because the USB-5133 is not capable of multi-record acquisition. The rearm time is a spec for the reference
trigger, and that trigger is used when fetching the next record. So every time you want to do another fetch
you will have to stop and restart your task.
To grab a lot of data increase your minimum record size. Keep in mind that you have 4MB of on board
memory per channel.
Since you will only be able to fetch 1 record at a time,
there really isn’t a way to use streaming.
When you call fetch, it will transfer the amount of data you specify to
PC memory through the USB port (up to 12 MB/s for USB 2.0 – Idealy).
Topher C,
We do have a Digitizer that has onboard signal processing
(OSP), which would be quicker than performing post processing. It is
the NI 5142
and can perform the following signal
processing functions. It is
essentially a 5122 but with built in OSP.
It may be a little out of your price range, but it may be worth a
look.
For more
information on streaming take a look at these two links (if you havn’t
already).
High-Speed
Data Streaming: Programming and Benchmarks
Streaming Options for PXI
Express
When dealing with different LabVIEW versions
it is important to note that previous versions will be compatible with new
versions; such as going from 8.0 to 8.5.
Keep in mind that if you go too far back then LabVIEW may complain, but
you still may be able to run your VI. If
you have a newer version going to an older version then we do have options in
LabVIEW to save your VI for older versions.
It’s usually just 1 version back, but in LabVIEW 8.5 you can save for
LabVIEW 8.2 and 8.0.
ESD,
Here is the link
I was referring to earlier about DMA transfers. DMA is actually done every time you call a
fetch or read function in LabVIEW or CVI (through NI-SCOPE).
Topher C and ESD,
LabVIEW is a combination of a compiled
language and an interpreted language.
Whenever you make a change to the block diagram LabVIEW compiles
itself. This way when you hit run, it is
ready to execute. During execution LabVIEW
uses the run-time engine to reference shared libraries (such as dll’s). Take a look at this DevZone article about
how LabVIEW compiles it’s block diagram (user code).
I hope all of this information helps!
Ryan N
National Instruments
Application Engineer
ni.com/support

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