Dear Ben
By your help i start immediately to read and serch in the web sites and i got this video on you tube explain some thing about our subject (http://www.youtube.com/watch?v=W4VZHwpSW1M)
and i will try to look for details or projects about it because if we succeed in this subject this will decreas the cost of purchase the DAQ and other additional equipments and saving money
thank you very much