I'm using a Ni usb6216 to acquire the position value from an rotary encoder. Since I'm new with labview I started from the encoder example " Counter - Read Encoder " given with the nidaqmx driver.
It works and I can read the position properly, but I now want to derivate the signal to obtain the rotation speed.
The point to point derivative block doesn't seem to work, cause it's output is still the position value divided by the "dt" value.
I don't know what's wrong, maybe it's some basic knowledge of lab view I'm missing.