From the manual, it looks like this accerlerometer returns it's values in terms of duty cycle. The manual says you can either use a counter or if you low-pass filter the output, you could use an A/D converter.
So I guess given those two options you could either use one of the counter/timer boards (NI 6601/6602). Or you could use an which could support the analog method. (Actually, the E Series boards have two counters on them so you could use the counter method there too.)
Their user manuals will discuss connections:
6601/6602 User Manual
PCI E Series User Manual
Also, be sure to look through the code library for sample programs. For the counter method, you'll want to look for "buffered semi-period" measurement. That would even be a shipping example if you have LabVIEW.
I hope this helps!
Russell
Applications Engineer
National Instruments
