-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The Saturday 2005-11-26 at 13:03 +0100, Theo v. Werkhoven wrote:
For best speed you'd probably want to use [a card with] dual-port memory and DMA, so that both the acquisition and processing can occure at the same time. Polling or interrupts is usually way too slow.
It depends on the needs. If you are going to simply sample at 1 second intervals, then a card doing 20Ks/s is very fast. If you need to create the equivalent of a 20Mhz oscilloscope in a PC, then anything below 100Ms/s is way too slow. The first thing is to fix the requirements, then search for cards and design. ¡Standard engineering! ;-) - -- Cheers, Carlos Robinson -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) Comment: Made with pgp4pine 1.76 iD8DBQFDiF23tTMYHG2NR9URAmkZAJ0X1pwiKbMzADnS8MsFZ6ORdsYh6wCfQLjN ascJt1XY0T+n9wk5gtUFwNA= =pin+ -----END PGP SIGNATURE-----