Serial Data Write

[naumanhabib]

Attached is actually my try

[crossrulz]

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@naumanhabib wrote:

See i have tried this formula but not getting frequency of that max peak. Please if you can update my vi in which i get frequency value of that max peak.

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Supply some data and the actual VI so we can help debug.  Everything looks like it should work based on the picture, but we can't debug a picture.

[naumanhabib]

Check in this VI i am not getting frequency value of max peak with formula specified (Frequency= f0 + df x Index). In my case peak occurs at -16K so i want to store this value somewhere in numeric/string form.

[RavensFan]

You are searching for the maximum value in your array.  That is obviously the one that reaches the top of the graph with a value of -54 at -28800.

Why do you think it is at -16,000?

What does a negative frequency even mean to you?

[naumanhabib]

i am very thankful to all of you, my this problem resolved too. I now only want to set a threshold for this peak like when max value occurs greater than -50 then glow some led light and for the rest of values it remain show the other values.

[GerdW]

Hi naumanhabib,

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@naumanhabib wrote:

 set a threshold for this peak like when max value occurs greater than -50 then glow some led light and for the rest of values it remain show the other values.

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So you need a simple comparison like:

IF MaxPeak >= -50 THEN
  LED:=TRUE
ELSE
  LED:=FALSE
ENDIF

or more simple:
LED:= (MaxPeak >= -50)

And you aren't able to create a simple code like that?

[naumanhabib]

Yes i am unable because i don't know where to insert that code. Please if you can update my vi. Thanks a lot

[GerdW]

Hi naumanhabib,

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@naumanhabib wrote:

Yes i am unable because i don't know where to insert that code.

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So you want to compare the resulting peak value with a constant value - and you don't know where to place that code?

What about wiring the "resulting peak value" to a comparison node?

What about wiring the result of that comparison to your LED indicator?

C'mon…

[naumanhabib]

Yes exactly i want to compare the resulting peak value with a constant value - and i don't know where to place that code. Also then i don't know the way for comparison result to led indicator. Help will be appreciated muchh. Thanks

[RavensFan]

If you are asking that kind of question then I would recommend looking at the online LabVIEW tutorials
LabVIEW Introduction Course - Three Hours
Learn LabVIEW