Plot constellation diagram error

[BEZENCHUK]

Help me plot an IQ constellation graph. I don't know how to fix a data typing error. The modulator data is output to the HOST VI in a while loop.

[GerdW]

Hi Bezenchuk,

the error message is quite clear: the cluster datatypes don't match!

You try to wire a cluster containing FXP data to a VI that expects a (standard) waveform datatype (with array of DBL samples).

[BEZENCHUK]

You're right, but due to my lack of experience, I don't know exactly how to fix this. Can you suggest a block that would work for my purpose?

[GerdW]

Hi Bezenchuk,

please don't ask for "HOW", ask for "WHAT" instead!

WHAT do you want to achieve? Which data do you acquire and what do you want to do with it?

(Right now you just ask "HOW do I connect this cluster to that cluster input?"...)

Remember: we cannot edit/debug/run images with LabVIEW!

[BEZENCHUK]

I need to build a constellation, which requires eliminating a data type mismatch. To do this, I need to create a cluster containing complex numbers. This only leads to a broken wire. I only see int and uint (for example, "U16 to IQ data") to IQ conversion blocks, so I'm asking how to implement this. 

Here's a simplified version of my code.

[GerdW]

Hi Bezenchuk,

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@BEZENCHUK wrote:

I need to build a constellation, which requires eliminating a data type mismatch. To do this, I need to create a cluster containing complex numbers.

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Yes, you can (easily) plot complex numbers on XY graphs…

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@BEZENCHUK wrote:

 This only leads to a broken wire. I only see int and uint (for example, "U16 to IQ data") to IQ conversion blocks

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Where does your data come from?

Which datatype do your sample have?

Why can't you convert from one numeric datatype to a different datatype?

Where do those "IQ conversion blocks" come from? (Which module/toolkit do you use?)

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@BEZENCHUK wrote:

Here's a simplified version of my code.

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Unfortunately I'm limited to LV2019 right now.

Please attach a downconverted version of your VI…