Hi,
I am not sure what the R3271 is, but we have a driver for the R3272 (Spectrum Analyzer with GSM option). Normally API's do not change significantly and so it is very likely that you will be able to use this driver for your application. You can get it by going to www.ni.com/idnet. The easiest way to get the the page is just to seach by vendor.
Hope this helps out.
Aaron K.
Application Engineer
National Instruments
