Remove dc offset from a signal

[GG_Jialat]

Hi! i need some help with removing the dc offset in my signal. Is there any labview function that i am able to use to remove the dc offset from my spectrum? I have seen some question asked in the forum but i cant really understand what they are saying. I really need help! Here is what i have done.

[GG_Jialat]

Here is my waveform.

[GerdW]

Hi GG,

you just need to subtract your DC offset:

I have no idea why you need a while loop to calculate the same signal over and over again...

[GG_Jialat]

I have try to implentment the subtraction of the dc offset but i lost my waveform after the subtraction. Why is this so? Here is my vi

[GerdW]

Hi GG,

did you read the error message? It clearly says: "trying to connect a cluster to an array of cluster"...

You use express VIs with their DDT (dynamic datatype). When using "real" datatypes the function "FFT power spectrum" just outputs a single spectrum (instead of the array before)...

[GG_Jialat]

GerdW thanx for the reply! But from my labview program, there isnt any error popping out. When i run the program it run smoothly. I cant really understand how to use an array.