As I understand it, I may only need to use the 1531. Although it says it is used for accelerometers, it sounds like the techincal specifications of the card are adequate. I will be measuring in the range of 30 Hz with force sensors. The sensors are made by PCB Piezoelectronics, model 201B02. This equipment was somewhat inhereted, so I don't really know what of it I must use, or how. Any guidance would be appreciated.