[time-nuts] OT: 10 MHz data capture, help

WB6BNQ wb6bnq at cox.net
Fri Apr 10 21:31:59 UTC 2009

Tom Van Baak wrote:

> I have a old data device that is spitting out TTL data at 10 MHz.
> There's just a data line (no clock) but the edges clearly indicate
> an internal 10 MHz clock.
> I'd like to do a continuous capture of the bits, for up to tens of
> minutes, into a PC. That comes to about 1 GB of raw data. I can
> handle the decoding of the bits in software after the capture is
> done. This is a one-time experiment.
> What is the best/quickest/easiest way to capture data like this?
> I've looked at various USB or LAN logic analyzer and 'scopes
> but most seem to work on batches of data. I need a continuous
> capture.
> /tvb


As others have suggested, perhaps a Software Defined Receiver would do the
trick.  The best one on the market and the cheapest uses a very high speed A/D
process for a range of 500Hz to 30MHz.

Look at the following URL: http://www.rfspace.com/SDR-IQ.html


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