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

WB6BNQ wb6bnq at cox.net
Fri Apr 10 20:57:59 UTC 2009


How about directly capturing it by reading one of the logic bits of the parallel
port ?


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
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