Hi Shamen,
To answer your question directly without going into why you are getting spikes in your signal the filtering functions avaliable depends on what version of LabVIEW you have (Student, Base, Full, Professional) or if you have certain toolkits installed. The LabVIEW Help under the VI and Function Reference»Signal Processing VIs»Filter VIs will contain information on where you can find basic filters.
Message Edited by DiscoBall on 05-13-2009 05:45 PM
Joshua B.
National Instruments