Convert Matlab FFT FFT LabVIEW

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• Difference between FFT LabVIEW and Matlab FFT

  Anyone know why there is a lag in the absolute levels of the results of the function in LabVIEW and Matlab FFT?

  See the VI attached for an example of my code to LV.

  Also attached is the plot generated in Matlab, which seems to be compensated by ~ 37dB.

  This was generated by using the command "plot (10 * log10 (abs (fft (x))))", where x is the same as in the VI input array.

  Thank you very much

  Dan

  I see you are using the VI of spectrum FFT which returns a unique range of face.  To convert a transformation both sides (IE FFT) in one spectrum sided with RMS units there is a standardization of sqrt (2) / n, where N is the number of points in x (t).  You can prémultiplier your x (t) by N/sqrt (2) and get the same results as Matlab.  Or, you can use the FFT.vi so you compare transform to transform instead of spectrum to transform.

• How to inherit from matlab code in labview. The code is ".m" format.

  Hi guys,.

  How can I use a matlab code in labview. I want inherited the code in matlab for editing in labview.

  Mathscript is an option? If yes how to do it.

  While MathScript and Matlab share much in common, they are fundamentally different languages and MathScript don't support or have equivalents of a large number of Matlab functions. In addition, if you use tool boxes, then you won't be able to use them in MathScript. In one of your ".m" files, I spotted the Heaviside function, which comes from the symbolic math Toolbox. MathScript isn't it.

  With respect to the code, I don't know what you mean that we for you on this subject. Certainly, we cannot convert the code for you (unless you are ready to hire a person).

• How to sit interface with matlab 2010A and labview 2010

  I use tools of simulation interface 5.0 with matlab 2010A and labview 2010, I want to take my cue from matlab, labview but signal transfer, I am facing a problem. I want to know is there any compatibility issue in sit 5.0 or I do something wrong?
  photos of errors are attached.

  natasftw wrote:

  http://digital.NI.com/public.nsf/allkb/02F5FA55FC28BDE1862578A30071F975
  While it is for 2011, I doubt that they decided to remove 64-bit compatibility as they went forward as 64-bit has become more rather than less demand.  In this document,notes LabVIEW Simulation Interface Toolkit does not support 64 bit versions of MATLAB application software."

  The extent of the compatiblitly for 32 - bit, I'd take a peek at: http://digital.ni.com/public.nsf/allkb/D174674A91E5536286257428005C2426

  The OP's question was SIT support 64 - bit version of LabVIEW and 64-bit version of the MATLAB/Simulink itself, not the operating system software.

  Document in your second link is on a completely different topic to have API for LabVIEW and MATLAB/Simulink/RTW (well, mostly Simulink & RTW). Here is the relevant link for the 32-bit compatibility: http://digital.ni.com/public.nsf/allkb/049295038FF0EE2A86257A06006B2DAD is no SIT 64-bit.

  Other underlying issues is that Pharlap does not have a 64-bit version. Finally, simulations are better performed on some RTOS (embedded PXI) for a deterministic execution rather than PC operating systems.

  -BTC

• I need to convert programs written in Labview 8.5 in Labview 2012 when I want to run these programs in 2012 of Labview VI?

  I have VI moreover written in Labview 8.5. These programs can work well in labview 8.5.  Should I convert these programs VI Labview 2012 when I want to run these programs in 2012 of Labview? Thank you.

  LabVIEW 2012 can open the screw of from 6.0.  But if you save them in 2012, you need to perform a "save for precedent" to get back them to 8.5.

  This resource may be useful:http://www.ni.com/white-paper/8387/en

• Can I get this program converted to readable in Labview 2010?

  Can I get the programs following, converted in readable in Labview 2010? I think the real files are in Labview 2013!

  Thank you

  http://forums.NI.com/T5/version-conversion/BD-p/VersionConversion

• Please convert my file to labview 8.5 labview 8.2

  Hi, can someone please convert my file to labview 8.5 labview 8.2 & it get back to me. I'll be very obliged.
  Thanx

  You can go there.

  If you use it, it takes a lot of work that local variables are abused.  There are while loops that run only once without reason. And serial ports being reconfiguration on each iteration of the loop.

• How to run Matlab code in labview for Binay coded on a file.

  Dear Sir/Madam,

  I saw a binary coded and Matlab code too, but I'm not able to open this file, so I want to open and run this file under the Matlab code. This image is what I want to do and also attached here file and matlab entry code.

  

  Hello

  Your script reads the data from the .dat file and gives a 3D Board. Unfortunately, MathScript currently can not handle 3D Board.

  In addition, you can use the following code to read the data in LabVIEW.

  

• MathScript instability with large Matlab scripts? (Labview 8.5.1)

  Hello

  I the student of LabView 8.5.1 version and experiences a lot of instability when you use Mathscript in Labview (the Mathscript block or the Mathscript window), but only when it comes to the larger scripts. The Matlab script is about 250 lines long and 16 KB of size and in this framework, are seven large paintings (six 14 x 8, built at the beginning and a 1000 x 9 which is built in a loop for, so increases with each iteration until 1000 lines). I find that whenever I have modify the script in the Mathscript node or the Mathscript window will freeze and hang for at least 10 minutes, sometimes totally crashing Labview Labview. As I wrote the script in Matlab, I'll have to debug in Labview and know what commands in Matlab do not work in Mathscript/Labview, so it's obviously pretty infuriating to have the program regularly hang for 10 minutes at a time.

  The computer I use is a desktop Packard Bell 5 year with 768 MB of Ram (less 32 MB integrated graphics card), running XP Pro. The processor is an Intel Celeron 2.6 GHz. I appreciate this isn't the best specced machine ever, but at the time it was all I could afford!

  Is this common suspended a little problem with Labview and Mathscript file ".m" large, or is manipulation - this purely down to my old computer?

  Thank you much for the help.

  Hello

  The delay that you experience is a problem with the big scripts in MathScript.  The delay increases exponentially with the length of the script.  For this reason, we recommend disaggregation great scripts and files ".m" in rooms separated by about 40 lines.  On faster computers, you can find the acceptable period for up to 100 lines.

  Grant M.
  Staff software engineer | LabVIEW Math & Signal Processing | National Instruments

• Convert a name cluster Labview Teststand container name

  Hi all

  I realized that day that there is no way to convert a Labview

  cluster in a container of Teststand and vice versa. So I'm currently

  work on a cluster/container recursive parser that would be

  rebuild the structure of mirroring in variant/PropertyObject

  tree. For this I use the following table:

  http://zone.NI.com/reference/en-XX/help/370052N-01/tsref/infotopics/labview_data_types/

  The problam I am now facing is to convert the name of each

  ELEMENT by its name to stay compatible with the

  the structure of mirroring. That's why no space or special characters

  to follow the naming convention Teststand. You can

  See what happens when you create a custom data Teststand

  Type a connector for Labview.

  So, is there a VI that do the trick, or am I still pruposed to do

  Everything by hand? Thanks for your comments. Even the one who

  will not make me happy.

  David Koch

  Abandoned project, topic closed:

  http://forums.NI.com/T5/NI-TestStand/enqueue-TestStand-cluster-to-LabVIEW-return-a-cluster-by/m-p/30...

  David Koch

• Can code C be converted to G for LabVIEW?

  Hi guys,.

  Is it possible to convert code C/C++ into G code in LabVIEW?

  Anoop,

  There is a close relationship between NC and ARMS resulting in the embedded Module for ARM microcontrollers. This can already give you everything you are looking for.

  There are other, custom developed approaches like this.

  hope this helps,

  Norbert

• How can I use 'fscanf' and 'fread' (matlab code) in Labview

  Hello, all,.

  I'm trying to write a VI according to my matlab file, now I m confused about 'fscanf' and 'fread ',.

  I used the VISA-reading slot - VI for the function 'fread' but who don't know for the "fscanf.

  and I don't know how to read the datamatrix with a Subvi.

  Is there someone can give me a tip, which will be very nice, thank you.

  your

  Adam

  Hello, everyone,

  I think that I found how to solve my problem. (The interface control series)

  fscanf expressing indeed as VISA-read in Labview and very time you use fscanf, wants to write something in the device memory,

  for example:

  fprintf = VISA / writing

  fscanf = VISA-read, but the value that was read is stored in the memory of the device, when you perform an indicator for the release of the VISA-read, this value will be shown and remove from the device memory. It's for my device OTDR, I don't know if everything is going well for any other device of m.

  When you want to read the datamatrix, for example in 2D, just use VISA read twice.

  When you still have any questions about this, feel free to ake, I'll try to answer you.

  Your

  Adam Yuan

• Convert this PLC in LabVIEW (hold pulse signal) function

  Hi, can someone help me convert this simple function PLC (Programmable Logic Controller) in LabVIEW?

  Basically, S1 is a normally open switch and S2 a normally closed switch. K1 is a contactor. Pressing S1 will trigger the switch and switch K1 will hold the value (true) until you press S2 (reset).

  Thank you.

  No worries,.

  Suggest you try to use a value from the State of the lock switch shift register.  Might look like this:

  

• Creating files dull with Matlab use in LabVIEW

  I am creating a dull in LabVIEW file using the use Matlab. It seems to create a group called "Vector" without knowing precisely in, and he also concatenates the group names and the channel. I made an example to demonstrate this behavior. I am trying to create a group called 'group' and inside it a channel called "channel". What I get is similar to a group called "Vector" and inside a channel called 'GroupChannel '. What I am doing wrong?

  Best regards

  John Sackett

  Dear Stephanie,

  Thanks for your reply. Looks like I can't use the use of Matlab, because he's trying to force the dull file either as a .tdm file. I found your list of very useful resources and uses the information in "LabVIEW to MATLAB" to make my own dull file written vi.

  Best regards

  John Sackett

• Convert TCPIP_Nagle_algorithm.zip 2012 LabVIEW LabVIEW 2011

  Hello

  can someone convert the screw in the zip file of the LabVIEW LabVIEW 2011 2012 please. I need them to study.

  Thank you very much for your support.

  In addition, I'm sorry that I put my post in LabVIEW and non-Conversion of the Version