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 >
Tom, The common way to do this is with a fast PCI analog input card. There are models that run at several tens of MSPS. You should be able to write a very small C application using their drivers to continuously log the digitized data to a file as binary or ASCII values. Here's a 30MSPS card: http://www.advantech.com/products/PCI-1714U/mod_GF-HQHV.aspx --David Forbes, Tucson _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.