Hello,
first of all, see examples/Waveform/operations.llb
the vi called Align Waveforms Timestamps example.vi
I hope it help you, if any problems let me know.
Mike Manzheley
Dr Jon Atkinson wrote:
> Hello
>
> I am in the middle of writing a program to deconvolute the signal from
> a modulated temperature differential scanning calorimeter (in which a
> sinusoidal wave is superimposed on the linear heating ramp).
>
> What I need to do is take the ratio of two sine waves (heating rate
> and heat flow). However, there is a phase lag between each wave (due
> to the time taken for the heat flow to respond to the applied
> temperature) and this phase lag is not constant throughout the course
> of the experiment because it is dependent of several factors (e.g. if
> the
sample in the calorimeter is undergoing some kind of transition).
> What I need to do is treat the waves cycle by cycle i.e. divide cycle
> 1 of the heat flow by cycle 1 of the heating rate, then cycle 2 of the
> heat flow by cycle 2 of the heating rate, etc., and I need to align
> the waves for each cycle. I need to make sure the peaks of the
> heatflow cycle are exactly aligned with the peaks of the heat rate
> cycle.
>
> The vast majority of my program is written, and I have just got
> stumped as to how I can align my peaks. Does anyone have any ideas?
>
> Thanks
>
> Dr Jon Atkinson
