How do I create tabs on front panels

[KDGREAT.]

Hi everyone. I want to create multiple front panels on the same project. How do I go about this?

Also, I needed to analyze noise from a thermocouple signal in terms of Probability  Density Function and power spectral density and I don't have a clue yet. Any body any useful info should pls reply.

Thanks. 

[yesman!]

For the first question follow these steps.

1) Click on the front panel.

2) Press control and spacebar at the same time.

3) Once the quickdrop window has loaded type "tab control".

4) Double click the tab control and place it on the front panel.

[yesman!]

For the second problem there is a continuous PDF.vi that might help you.

Just click on the block diagram then press control and spacebar and then type "continuous PDF.vi"

Hope that helps!

[johnsold]

1. Choose the Tab control from the Containers palette.

2. The noise from the thermocouples is likely to be quite small.  Many things will affect that: How long are the thermocouple wires? Are they in an electrically noisy environment?  What is the thermal environment? What kind of signal conditioning do you have?

What are you going to do with the noise information after you get it?

Lynn

[KDGREAT.]

thanks for your response. I want to carry out frequency spectral analysis on the thermocouple signal to determine the following:

- sampling rate

- averaging procedure

- cut of frquency for the filter.

any feedback will be appreciated.

regards

KDGREAT.

[johnsold]

Any digitized FFT must know the sampling rate because it is working with a sequence of samples.  The frequency separation is defined in terms of the number of samples and the time between each sample.

It is highly unlikely that you can get any information about the averaging procedure or the filter unless you have information about what the data was like before averaging.

Do you have any theoretical or mathematical basis for understanding or explaining how you could get this information?

I am not trying to be difficult.  If there are ways of doing these things, I have not heard of them in 40 years as an engineer working on measurements and signal processing.

Lynn

[Ray.R]

Well said Lynn..

I do realize that the discussion has moved away from the original topic 😉

Are you trying to resolve a problem that would normally be solved using signal conditioning?

Are you seeing artifacts from 50/60Hz ?

Did you mention what your thermocouples were connected to or in proximity of?  ie: do you need shielding?