MrrM

sorry

"......Checking with simulink, for example with a sinusoid of amplitude 1, the integral should have amplitude 1 and the derivative 1...."

The problem is in Labview when I change frequency the sine's derivative amplitude and integral are not exact.

Hi,
I've a PXI-7841R (FPGA).
My VI needs to send the derivative of a sine wave (volts) to an external card and acquire a sine wave input (velocity) that I have to integrate. 

The sine wave later become with two harmonics.
When the frequency is too high, I notice aliasing problems and the sine's derivative  amplitude and integral are not exact.

Checking with simulink, for example with a sinusoid of amplitude 1, the integral should have amplitude 2 and the derivative 1.

I have attached a screenshot of simulink and VI simple to check if the integral and the derivative values are corrected, by changing the frequency.

Any help would be appreciated.

Regards

dev int simulate - Copia.vi