- From: Frank Mori Hess <fmhess_at_users.sourceforge.net>
- Date: Fri, 22 Oct 2004 18:35:13 -0400
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Friday 22 October 2004 01:08 pm, Ong Wee Liat wrote: > Hi Frank, > > yup..i think i am pretty sure i fed in a sine wave of approximately 1 > kHz. It is between 1.045 - 1.067 kHz range as the display from the > function generator and the oscilloscope differs slightly. A 1.045-1.067kHz sine wave sampled at 1 kHz will appear as a 45-67 Hz sine wave. It's called aliasing. > Further i found some other issues with this command using this driver > which i have posted it too. By default, the driver transfers data in fixed size blocks. Use the TRIG_WAKE_EOS flag if you want less latency. The command takes less time to complete with more channels because it takes less time to fill one block worth of data (the excess samples are discarded). - -- Frank -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFBeYsh5vihyNWuA4URAiAIAJ9k0xDknxC+CM6ZuflQaQha7wbfDwCdFmXh 3YB8CL6PjOUbuT//941IXGo= =EmQf -----END PGP SIGNATURE-----
Received on 2004-10-22Z21:35:13