install
http://www.microsoft.com/download/en/de ... px?id=8328
or
http://www.microsoft.com/download/en/de ... x?id=13523
 

Active power P=U rms *I rms *cosφ Power factor cosφ=integral(A*B)/(sqrt(integral(A*A))*sqrt(integral(B*B))) φ=acos(integral(A*B)/(sqrt(integral(A*A))*sqrt(integral(B*B)))) [rad] φ=acos(integral(A*B)/(sqrt(integral(A*A))*sqrt(integral(B*B))))/Pi*180 [deg] I have in mind this phase angle. Measurement ...

Beta software Maths Channels? ---> acos(integral(A*B)/(sqrt(integral(A*A))*sqrt(integral(B*B))))/Pi*180