Arbitrary waveforms with LVM file

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• Export of multiple markers in mode of arbitrary waveforms

  I use the example Fgen Arb Marker.vi waveform (in the examples of LV2011) as the basis for the production of markers and exporting to PFI0 and PFI1 on a PXI-5422.

  I added a 2nd call of property node after the first configuration of marker1.  The program runs without error, but only generates marker0.  It seems that if I configure Active Channel as 'marker1' or 'marker2' or 'marker3' or 'marker4', the property node has no effect.  I expect that subsequent calls must set up additional markers.

  I used the script mode to configure several markers with my generator signal as well, but I'm trying to understand how things work in mode of arbitrary signals for some legacy code.

  

  So just to summarize, things that I confused me more than before and during this thread have been:

  1. lack of feedback of error/warning when configuring marker1-marker3 in wave arb mode

  2. the general statement "a marker by segment" seems inaccurate given the script arb mode

  3. script view arb is not mentioned in the PXI-5422 or PXI-5421 hardware specification

  1. the Council supports 4 markers, numbered 0 - 3. So when you configure those, you do not get an error. When you configure marker4 you get an error because it does not exist.

  2. I think you are right, that the statement applies to arbitrary waveform Mode, no Mode Script.

  3. it's probably another problem of documentation. Script mode was not supported when 5421/5422 first came out, so my guess is that when a support because it has been added, the documentation was not updated.

  Good luck

  Marcos (not Marco )

• Arbitrary waveforms

  Hello world

  I use the Modulation Toolkin do my thesis, specifically, I work with the driver NOR RFSG. The VI called "niRFSG set up generation Mode.vi" needs to set an option (the mode of generation). You can choose between a CW, arbitrary waveforms and a script. Well, I have to use the option of arbitrary signals but I do not quite understand, but that means. What type of waveform is generated? Where can I find more information about this?

  Thank you.

  Hi kantabra

  When you use the method of arbitrary signals, you must set the IQ data yourself that is generated. I suggest you take a look at the example that accompanies the driver NI RFSG. You can find it through arbitrary waveform Generation.vi help - find examples - material IO - Modular Instruments-OR RFSG - arbitrary signal generation - RFSG

  This example shows how to use this method with your signal generator.

• LVM file in table

  Before starting, I have to admit, I'm relatively new to LabVIEW.

  My problem is this: I want to read a file-lvm data in a table and then work on this table. Unfortunately, I did not really understand how use/work on the data from the read measurement file VI; It's the same thing with data from an external device (with Assistant daqmx). I have completed the first steps tutorial offered by LabVIEW (in the German version, but I don't think that there is a big difference) and I tried to find something in the help, but I found nothing. I would appreciate every kind of help; I think the most useful would be a clue where I can learn more or a good solution how to save the contents of the file lvm in a table.

  As I wrote above, I'm a beginner of LabVIEW. But I used some 'normal' programming such as Python or PHP languages before; so maybe I even don't think the path to labview? The initial problem is that lvm-file contains measurement data, and I want to divide them. There is a column with values from 1 to 360, and who repeats ([1, 2,.. 360];) [1,.., 360]; [...]). I want to split the data in the sections marked with [] in this example, so I can examine each section separately. I thougt I could use an array where array [0] [...] contains the first section and so forth, to describe the PHP way. If there is a better solution in LavVIEW, please tell me!

  Thanks in advance, and I hope you could understand my post.

  mkrtwo

  I suspect the problem you encounter, it's reading file measure returns this type of dynamic garbage data. To this day, I still hear a person who has found to be useful. In order to work with it "for real", it must be converted to... Well, a real data type. You can use the function convert of DDT to do this. In your case, you would want a 1 d table, since you said that you have just a single column. You can then use reshape table to get a 2D-360xN table. What you do from there, it's kind of you. For example, you could drive a loop for directly from this table 2D and each iteration, you get a piece of 360 items in a table 1 d (autoindexing made first of all of the lines).

• writing the file of waveform in .txt file

  Hello

  I want to write a file from waveform with 16 laks of rows and columns in a text file. I used export of waveforms of spread sheet file VI. But it takes a long time (about 2 to 3 minutes). As it is written, it is that the first part of my analysis this duration is very long for me. Is it possible to reduce this interval.

  Thanks in advance

  Try this code example that read/write without report generation tools.

  https://decibel.NI.com/content/docs/doc-8226

• View .lvm files

  Hello

  I was wondering how I could see the .lvm files I recorded my signals with. LabVIEW gives me an error (something like "... is not a valid file of LabVIEW") when I try to open it.

  Also, is it possible to write results directly in an Excel file?

  Hello

  You should be able to open it with the "reading measure File.vi. You will still be able to open it with a text editor?

  To MS Excel, you simply ASCII tab-delimited files. So, you can either use the "write to the spreadsheet File.vi" or low level or you ASCII file IO functions could install the Plugin TOC to Excel and create the TOC files in LabVIEW.

  Christian

• Do a session when you work with single files

  Hello.

  I'm new to hearing, but old as a user of audio software.

  I do Audio Forensics.

  I do not work in the multitrack environment.

  I have.

  I can't find a way to save my session.
  (And what I define as my session).

  Preferable the same RX 5 adv does,-all what I did with my single file. All filtersettings and cancellations.

  But at least - my audio with my FX rack loaded with the FX, I used, - and the right settings for each of them.

  And of course-the markers and regions that goes with the file (I guess that's ok, because metadata follows the sharing of .wav files)

  Did I miss something? Where is it placed?

  2. (and I know that I have this post in the forum first)

  Everyone who knows a way to get markers audio .wav converted to QuickTime chapter markers?

  Yes,-j' have the first and FCP X Pro.

  First audio markers is visible, but I find a way to select all Don t and convert chapter markers.

  FCP Pro x want to read the FCP XML file which makes the hearing...

  Best

  Truls

  feilx2704 wrote:

  I do not work in the multitrack environment.

  I have.

  I can't find a way to save my session.
  Did I miss something? Where is it placed?

  Hearing sessions exist for multitrack environments, not at all for editing waveform, which is destructive.

  2. (and I know that I have this post in the forum first)

  Everyone who knows a way to get markers audio .wav converted to QuickTime chapter markers?

  Yes,-j' have the first and FCP X Pro.

  First audio markers is visible, but I find a way to select all Don t and convert chapter markers.

  FCP Pro x want to read the FCP XML file which makes the hearing...

  Hearing stores audio markers in addition separate at the end of a wav file. There is a software called CueListTool that gives you options of manipulation that may well help you. As far as I know, it still works fine with the current version, even if it is quite old now.

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• Simulate the analog output of arbitrary waveforms

  Simulate it Arbitrary Waveform VI Express can be used to generate analog signals to the physical channels in analog output mode systems such as the NI 9263? I am trying to use the VI arbitrary signal generator to produce a signal used to excite the magnetic coils.

  Why don't you just try and see what happens?  As far as I know, it should work.

• SMTP E-mail with attachment file - table error

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  I also tried using the old "SMTP send Email with attachments" feature by converting the path of the file in a string, and takes as the path of attachment, but he also didn't work.

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• Read all LVM files in a folder and compile

  Hello

  I want to read all the LVM files in a folder as shown in Figure 1. In each file LVM, there is a row of data that are important, like on the picture 2. I want to extract only the rank of value in all the files this particular file LVM.

  Then I want to compile in 1 Excel or text file.

  Furthermore, I also want to name each line values in newly compile it files. The name will be the name of the file extracted it previously, as well as the date and the time it was created.

  I tried to use the loop and the folder list, but to no avail.

  Hope that this will not be a too much trouble. Thank you

  Hi pengxin,.

  What room are you stuck at?

  Below is a diagram of simple block that I created which should do what you need. First of all, we get all the names of individual files, and then one by one, we read the data from the file. Since you only need the data in the first row, we will index in the array, add the name of the file, the date and time of last modification of the file to the front of the data, and then save them in a new file.

  

  I hope this helps.

  Kind regards

  Boon Chen