Incompatible mabview and Matlab responses

[neil84]

Hi all,

I need to determine an tranfer function of that bode answer:

                                        _______________________  17dB
                                       /
                                      /
                                     /
                                    /
                                   /
__________________________________/                             -14dB
                              1.5kHz  20kHz

 

I tried to do that with Labview and with matlab. However, the same transfer function dont have the same bode diagrame on matlab ant labview:

Matlab code:

---

 sys=tf([0.0244 1.17E-5 2.64E-9],[0.056 1.26E-5 9.8E-10])^2

bode(sys);

---

Labview Snipet:

Why is it different? What is the true answer?

Thanks

 

[neil84 · Accepted solution]

the polynome prder is inverted from matlab to labview