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Re: [Discuss-gnuradio] Re: A low-budget SDR - Was: PCIe know-how?

From: Eric A. Cottrell
Subject: Re: [Discuss-gnuradio] Re: A low-budget SDR - Was: PCIe know-how?
Date: Sat, 17 Mar 2007 12:01:12 -0400
User-agent: Thunderbird (X11/20060911)

Brian Padalino wrote:
>> I would have to co-ordinate the receivers exactly to do this... Could
>> it be possible to supply a stable clock over Ethernet? Couple it to
>> the -48VDC? =)
> I highly doubt that you can do it over ethernet, but you may be able
> to supply a 10MHz reference clock over a coax line that could drive
> some sort of PLL that were highly stable?  I am not a clocking expert,
> so you're a bit on your own.

You may be able to use IEEE 1588 precision time protocol (PTP) over the
Ethernet to provide time stamps for on-board clock synchronization.

73 Eric

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