Fixed point to Dynamic data

[Bgmnt]

Hi

I am using cRIO Module.

I am taking input from one of the cRIO's Analog Input Channels, on the fpga target 

And then importing these values to RT module for signal processing.

However when i am connecting one of the imported channels to a filter,it shows an error stating " the source is fixed point number and the sink is dynamic data type"

How to carry out this conversion?

[crossrulz]

You don't.  Use one of the actual Filter VIs instead of one of the Express VIs.  Look in the Signal Processing->Filters palette.

[jcarmody]

How do you get down from an elephant?

[Bgmnt]

what do you mean?

If someone asks for help, you help him JIM.

[Bgmnt]

@Crossrulz, 

i also need to use tone measurement which isnt available

[Bgmnt]

And, 

only point by point filter works..

how is it different from normal filter?

[crossrulz]

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@Bgmnt wrote:

And, 

only point by point filter works..

how is it different from normal filter?

---

You would actually be having the same issue with the dynamic data version since you only have a single point.

Need more information here: What is your sample rate?  How are you transfering the data from the FPGA to the RT?  Code could especially be useful here.

[Bgmnt]

Hi,

I havent really set up the sampling rate anywhere but my signal belongs to 0- 20 Hz.

I am sending the data using FIFO

[crossrulz]

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@Bgmnt wrote:

Hi,

I havent really set up the sampling rate anywhere but my signal belongs to 0- 20 Hz.

I am sending the data using FIFO

---

Sampling rate will be determined by your FPGA loop rate.

Another thought here: you should probably do your filtering in the FPGA.  It can handle the math a lot better than the Real-Time and it would help avoid some of this confusion.

[Bgmnt]

tone measurement isnt available in fpga toolbox