bandlimited pseudo noise

[Tim Ressel]

Martin,

Back when I did vibration analysis using FFT's, we had a calibration signal for
measureing phase & amplitude through the filters. The signal was a PRN
synthesized from an inverse FFT and burned into an eprom. The eprom was then
'played' with the same sample clock as the a/d.  Would this work in your case?  

By the by, i think I still remember how to do the inverse FFT trick. Something
about a phase conjugate reflection....

By the by part 2, I do still have some eproms from that era. Its only 12-bit
data, tho'.

Tim Ressel--Compliance Engineer
Hewlett-Packard
Verifone Division
3755 Atherton Rd.
Rocklin, Cal
916-630-2541  
timothy_ressel at hp.com