Aquí hay una tabla de valores de corriente de excitación para dispositivos DSA: 443x de NI, NI 4461/2, 447x de NI, NI 4496/4498, NI 9218 y NI 9232/3/4. Nota: El PXI-4495 no es compatible con la excitación IEPE. The NI-9232 incorporates software-selectable AC/DC coupling, IEPE open/short detection, and IEPE signal conditioning. The input channels simultaneously measure signals. Each channel also has built-in anti-aliasing filters that automatically adjust to your sample rate.
The NI 9232 is designed to work with IEPE sensors, which have built-in signal conditioning. If you dig deeply enough into the specifiactions you find the input impedance is 324000 ohms, which is much too low to work directly with a piezo sensor. You need a signal conditioner. The datasheet you linked lists signal conditiners among the acccessories.