Data analysis software for L.D.Vibrometer results.
Data analysis software for L.D.Vibrometer results.
(OP)
Does anybody know what software to analyse output of dual channel Laser Doppler Vibrometer measurement(details of setup: http://www .eng-tips. com/viewth read.cfm?q id=176437& amp;page=1).
Requirements:
determination of PEAK velocity values(not RMS) and its variations live during measurement,
measurement of phase difference between channels also live,
FFT analysis of signals (# of frequency lines ~40k for 0-40kHz range or ~80k for 0-80kHz range)prefered live for both channels.
Measurements are fatigue tests of microalectronical components (duration-hours) so amount of data is HUGE.
Already tested:
http://www.sinusmess.de/e/produkte/samurai.htm
FFT properties not sufficient (number of lines 25601 for 0-20kHz and 12801 for 0-40kHz)
Next for tests:
http://w ww.lds-gro up.com/doc s/display_ product.ph p?product_ item_id=65
Any help/suggestions would be appreciated especially if You have ever used Perception or have experience in similar aplication of another soft.
Regards.
Requirements:
determination of PEAK velocity values(not RMS) and its variations live during measurement,
measurement of phase difference between channels also live,
FFT analysis of signals (# of frequency lines ~40k for 0-40kHz range or ~80k for 0-80kHz range)prefered live for both channels.
Measurements are fatigue tests of microalectronical components (duration-hours) so amount of data is HUGE.
Already tested:
http://www.sinusmess.de/e/produkte/samurai.htm
FFT properties not sufficient (number of lines 25601 for 0-20kHz and 12801 for 0-40kHz)
Next for tests:
http://w
Any help/suggestions would be appreciated especially if You have ever used Perception or have experience in similar aplication of another soft.
Regards.





RE: Data analysis software for L.D.Vibrometer results.
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Data analysis software for L.D.Vibrometer results.
In this case do You Gentlemen know soft that can record data AND calculate live at least 25k lines for spectrum 0-40kHz ?
Huge thanks for any help.
RE: Data analysis software for L.D.Vibrometer results.
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Data analysis software for L.D.Vibrometer results.
Best compromise I've found as 65536 spectral lines that works live during measurement(SpectraLAB 4.32-supports also post procesing).
Instead of using dedicated data aqusition unit Creative EMU 1616M sound card (192kHz/24bit) can be used(about500$), never tried it before (vibrometer voltage range is +-10 and sound card -+0,4V) but with voltage converter should work fine.... (I hope).
Huge thanks for advices and remarks Greg.
RE: Data analysis software for L.D.Vibrometer results.
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.