Write to a file at a different frequency?

Similar Questions

• How to use the acquisition of input data acquire a signal at a frequency while writing to the file at a different frequency

  Hello I'm trying to read in a temperature of a thermocouple and displayed on a waveform graph and at the same time, I want to write data to a file at a significantly lower frequency.  Currently, I am sampling data acquisition at chaque.01s and I would like a sample to write to the file every 2 s.  I thought of activating/deactivating the option activate the relay every 2 s, but I don't know how to do that and I wouldn't be surprised if there is a standard way to do this, but I've not been able to find.

  Thank you

  Miguel

  

  If you are sampling of chaque.01s and you want to write a snack every 2 s, what about all the other samples?  You want to just throw away?  You read so 200 samples in 2 seconds.  But you want to write a sample.  You can do it if you don't mind losing the other 199 samples.

  You could use the elapsed timer function and the release of the elapsed time of a structure of business wire.  Put your writing inside the real deal function.  Nothing in the case of false.  Make sure that all of the timer to reset automatically.  If every two seconds, the case will be set to true, and will be called the write function.

• Why even after having changed the permissions can't write to my files?

  I moved files on "users / shared" on the imac 27 "my father Yosemite retina.  He got last June but was not able to migrate because of her old imac was in Florida and North Carolina.  So, I migrated the old imac again with time machine backup charges a few months after getting the computer.  Now, I'm trying to merge the 'old' on the new computer account with the migrated account 'new', I restored it with time machine from the old imac.  I thought I was smart "passage" large libraries of film and photo of users / shared and that the account migrated from old imac. (on the same computer again) But I have no write permissions for files on the migrated account.  And making matters worse, while I can't write to files, I'm still able to corrupt them trying to change permissions and try to load them with i-movie and what not.  So now, I have a 6 GB corrupted movie library and not backup.  I tried it duplication and corrupt also.

  So my question would be "why is it when I add to the new migration full privileges to user for these files, I always failed to write about them?  Now instead, I wonder if there is a way I can fix the corrupted film library file.  Film - I tried and failed on the double.    I tried available i-movie file to 'all' as well as the addition of the new migrated user full privileges to it.  While I was able to do it without error (it seems to take the changes) or the new migrated user or former user on the new computer can write to the file (i-film library) at this stage.

  Every article help I read says just to click on info and change the privileges for what I did.  So I'm pulling my hair out.

  Hope that I was not too confusing in the way that I want to talk about the two different accounts.

  Reset user - file property See post by Linc Davis

  You may need to restore the permissions on your user account. To do this, start on your recovery partition (hold down the command and R during startup) and open Terminal from the Utilities menu. In the Terminal, type: 'resetpassword' (without the), press return, and then select the admin user. You do not have to reset your password. Click the icon of your Mac hard drive at the top. In the list box below, select the user account that has problems. At the bottom of the window, you will see a box labeled restore Home Directory permissions and ACLs. Click the button to reset there. The process takes a few minutes. When you're finished, restart.

  Fix the permissions of the user

• Same result for different frequencies?

  Hi all

  I'm new to labview and the communication kit, so I'm trying to test the examples.

  When the example of 'Rx Continuous Sync or Async' opening and it works I get the same output on the "power spectrum".
  i'm checking different frequencies in the range of 1.2 GHz to 6 GHz.

  How is it possible then that there is nothing transmitted? -> checking with the android application for wifi channels (channels 1 to 8 are used, all others are not...) and yet labview gives me the same result... (attached file = 2 GHz, the other is a comparison of the 5 GHz, 2,412 GHz and 2,484 GHz)

  material:

  NEITHER USRP N210 (rev 4)
  CBX 1200-6000 MHz Rx/Tx (40 MHz)
  Antenna VERT900

  connecting via gigabit

  PC: W7 64 bit, i7-2600 to 3.4 GHz, 4 GB RAM

  Thanks in advance

  Hey insiderbe,

  I did some research on the Ettus forum and found the following:
  https://lists.gnu.org/archive/HTML/discuss-gnuradio/2010-08/msg00237.html
  https://www.Ruby-Forum.com/topic/214890

  I suspect that the IPS you see on 0Hz is the DC offset that is introduced to the ADC of the USRP N210. We can confirm this by removing air and closing the RX. If the tip is still there, it's a feature of the analog input circuit.

  Brian of Ettus recommends tuning your frequency slightly out of your signal of interest and using a high pass filter to remove DC offset. I recommend looking at the second link for more information.

  With respect to obtaining the value of art through many different frequencies, I think that it is a property of the antenna used. The VERT900 is valid from 824-960 MHz and 1710-1990 MHz. can you listen to one of these groups and test your power, even if you have a known signal? You have another USRP generator or a function to generate a known signal?

  https://www.ettus.com/product/details/VERT900

  My last concern use the N210 with the CBX in LabVIEW Communications. According to the Readme, it's an unsupported hardware configuration, which means that R & D has not tested the configuration, and we do not know how the configuration will occur.

  http://download.NI.com/support/softlib//RF/NI%20USRP/15.0/niUSRP_readme.html

  Thank you for this post!

  Kind regards

• write to measure file vi bug?

  Hello.

  Looks like I might not be the first with this.  I suspect...

  http://forums.NI.com/NI/board/message?board.ID=170&message.ID=234485&query.ID=1018110#M234485

  I still after that I don't know how many hours days etc., failed to do this work.   I had to go and do a 'real' job, as it is called here for a few days or so, don't play no not with the software, however, is that asked me to do.

  This is all about 'Writing as Data File' express VI comes with LV 2009.   Used as Cree in the document "Getting started with LabView" infamous.   Running on XP Pro, perfectly (until tomorrow "Patch Tuesday" maybe.)

  Writing on a data file Express VI:

  It works the first time, no mistake, a lot of data, the first time entry to activate is made true, even if I leave it is true, thankfully, it creates several KB of the planned just as data file.   Do activation enter False, writing to the file STOPS, again just as expected.

  New do right and produces an error (the chemin\nom of the input etc file is still there and equally valid that it has always been) and no data is written in the file, despite no changes to the inputs of the VI (with the exception of the data of unique signal value)

  However, if give you him a new one (same file path\new) file name, and then he would write in the new file every time.  It's without blocking the program as a whole.

  I can navigate between two files just fine.   But it just will not write to a file first, that it is "Re" active after a deactivation is used.  Re entering the same path\filename is not a solution.  It must be another to wake up the thing.

  As it is, it's worse that useless for any serious application, and as the other party, I can't imagine how he got through the mill of QA.   As the other party, it is sold on the fact that it is supposed to be easy to plant items/icons on the comic and join the dots to make things work.  While largely true and there are a lot of good stuff here, there are a lot of things that exist for travel upward and confuse him.   The help is too small.  I get the phone call and email to other types of NOR, but no solution to the problem.

  If you want a copy of the VI program all the so-called fine, just someone tell me what and how to download it on this forum (very strange).  I can upload images, but I can't find a way to "attach" files, etc.  Or to work through the Getting Started document (as I have now three times!) and you will find the problem.

  Oh, and I seem to have lost the indicator as to how much
  days of "evaluation" I left.  I can't find a switch to make it appear that
  Gray more splash screen.

  Kind regards.

  Dave Baxter.

  Technical Director:

  AR - UK Ltd.

  I think that there is certainly a bug.  I can see where it is going, but I don't know why he got that way.  This VI shows the bug in LV 8.6 also?

  Right click on the entry to measurement file Express VI.  Inside that is a Subvi, called ex_subFileWrite.vi.  It is a clone of a reentrant VI, so it is quite difficult to follow execution through it.

  Somehow the first time through she builds and checks the file name based on what comes into it.  She that stores into a shift register.  If you clear the writing to a file, the shift register is stored which is not a constant of path.  Later, when writing is reactivated, it uses just the path (not a path) from the shift register, rather than back in the name of the input file.

  Exactly where this is really out there, I'm not sure, because express VI makes such a spaghetti with inter twisted code for managing all types of files and in writing the conditions and a lot of manipulation of file file path.

  I think the reason that edit the path and even change back works is that there is an initial control if the path is the same and if it is different, it works with the new file name, if it isn't, then it works with what was stored in the shift register.

  A person of OR should look deeper into this substantive code of the Express VI and try debugging.  I think that there is a bug.

  But here's a work around.  Use a select statement to send the correct file name if the writing is enabled, or a file path empty if it is not enabled.

  

• Simultaneous release of digital waveform at different frequencies - cDAQ-9174 with two 9477 maps error-50103

  Hello

  I'm working on a project that requires two outputs digital signals at different frequencies. Frequency of the phase 1 is about 1 kHz and is modulated on and off to a pace that will change during the execution of the program. Wave 2 passes from 1 kHz to about 6 kHz while needing to be pretty accurate to the tenth of a Hertz.

  Initially, I tried to manage the simultaneous output of signals at different frequencies using a single task on a single 9477 daqmx in a cdaq-9174 chassis. As far as I know, the best way to get a specific frequency in a waveform output is to set the sampling frequency up to 2 times the frequency of the wave that is generated and generate a waveform that is given to each clock cycle. This works very well when it comes to a gesture, but I was unable to get the frequency of the modulated wave (wave 1) remains constant when the frequency of wave 2 modified or vice versa.

  I have a few other modules lying around (another 9477, 9403 and 9476) and I thought I would try another task running on a separate module. I find myself receive error-50103 message if I add these modules to my cdaq chassis and run one of the waveforms of a task set to run on the add-on. Is there a way to bypass this error? I guess it would cause by running two digital output on the cdaq-9174 tasks at the same time, but it seems to me that this wouldn't be a problem with an additional module.

  How can I have two outputs digital signals, running at the same time, maintaining their independent frequency frequency of the clock of the other sampling rate changes. In addition, because the wave 1 is enabled and disabled at a defined frequency, I use it to set the number of samples to write when you write a range of waveforms in the module (when generating these two waveforms on the same module).

  I'm sorry if the explanation was difficult to understand. I've attached an example of error 50103 lifting. This isn't really a part of my project as a whole, but it is the easiest way to reproduce the error.

  Thank you

  Hi awol.

  I have a follow up for you. You encounter the error because the cDAQ chassis has only a timing engine of. You will not be able to perform simultaneous tasks of the call by the hardware. Please see the following knowledge base: http://digital.ni.com/public.nsf/allkb/5E0B829E50ADE1BC86257AC50062B2D2

  Mike

• Write to binary files

  I want to save data in a binary file. This VI takes into account several channels and displays them in a bar chart. The generated waveform out with precision, but the generated text file does not save the data. It's only a few characters long, and I don't seem to be able to interpret it at all. I tried to save the data of type variant and the data after the conversion (before it is in graphic form). The files and the VI are attached below. Any advice on where I'm wrong would be greatly appreciated.

  

  Shultz,

  Do you intend to write a binary file (more effective, unreadable by humans) or (less effective, human-readable) text file?  They are of two different file types.

  The code in your screenshot opens a text file but then saves the binary data of the Variant.  These data are likely not as ASCII (text) format so when you try to play you see what appears to be garbage (really, what happens is that your text editor's interpretation of the 1 and 0 of binary data of type variant as ASCII coding).

  If the chart appears correctly, then I think that the GetData UMCBICONN2 returns an array of numbers.  In this case, you want to convert this table of numbers to strings, and then use writing text VI of file to save to disk as follows:

  

  Sorry for the screenshot - I would normally post an excerpt or at least fix the VI but I work on a development machine that does not have a version of LabVIEW on it and you don't would not be able to open any VI I saved.

  I hope this helps. Best regards, Simon

• PCI, I / AO at a different frequency

  Hello

  As a newbie, I met a problem when I tried at the entrance and the analog output signal at a different frequency.

  I followed PID-control - Multichannel .vi to build a control program, so input/output can be synchronized. However, the project requires that the frequency of I be tenfold of the AO. I could re-write the while loop to make the output value constant for 9 of 10 cycles. However, in my view, it is simplest way to do.

  Anyone provide an example?

  Thank you in advance.

  Sincerely yours

  Ming

  lmuri wrote:

  Hello

  As a newbie, I met a problem when I tried at the entrance and the analog output signal at a different frequency.

  I followed PID-control - Multichannel .vi to build a control program, so input/output can be synchronized. However, the project requires that the frequency of I be tenfold of the AO. I could re-write the while loop to make the output value constant for 9 of 10 cycles. However, in my view, it is simplest way to do.

  Anyone provide an example?

  Thank you in advance.

  Sincerely yours

  Ming

  Hello Ming!

  Please use the Forums of NOR. You'll be happy to know DAQmx allows what I/O tasks such as these to be not run not only at the same time, but at different rates.

  The problem with the solution that you have imagined is that this implementation will remove the delegation of tasks to the hardware level, and your program would become software-driven; This becomes a problem when you perform tasks of acquiring data at very high speeds as it becomes limited to the speed of your operating system (OS).

  You can coordinate your tasks to operate synchronously and perform the output and the acquisition at different rates by creating a maintask. This means generally that you configure a task by DAQmx that keeps a clock frequency and you create tasks that use this clock frequency, or a division thereof, to exploit to their own individual frequency. This facilitated not only the execution of DAQmx tasks synchronous but also provide a material entirely focused on the solution of performance maximimse.

  Thanks to LabVIEW, if you go to help > examples find to open the Finder of example of OR. If you are browsing material input and output > DAQmx > synchronization > multifunction > Multi - multifunction - Synch Dig read write with Counter.vi, you will find an example of how to set up a counter as a master of the task to control the operation of operation both a reading and writing . (This example shows a digital but implementation may be easily replaced by analog).

  By setting the meter to the maximum frequency rate that you will require for your task (in this case, the speed at which you want to copy values) and apply it to the output of the SampleClocktask, you will drive the clock output task with the counter as the clock source. You can then use the meter as the source of the SampleClock for the task of entry, however to set the rate at any division of the driving frequency. In the case of your example, you can set the bit rate to 0.1 times the frequency counter to acquire a 10th of the rate.

  If you want to acquire at the same rate, but only to retrieve values on the 10th of the speed, this same solution can be configured to produce instead a trigger to return an acquisition in the buffer. With a master synchronizing the task, the possibilities are endless!

  I hope you find it useful, and if you need a precision more do not hesitate to let me know. Have fun with your DAQ!

• Write to the file in Question

  I do modeling experimental with a VI that many members of this Council greatly helped me go.  Part of this modelling is the creation of a periodic function.  I accomplished this by using 30 value entries 'Y' and a frequency to create sort of a 'function of unit', or basically, a period with a value of function, with a maximum amplitude of 1, while it is conveniently set on the scale.

  What I find is that it'd save these 'functions of the device' as well as their corresponding amplitude and frequency of file, that I cannot laod later in the program.  So, I need to write data to a file, (30 pairs of doubles, with 2 independent double rooms) and then have the opportunity to browse through all my saved both functions load the desired one.

  I used the express vi 'Write in a file as' before, but that seems to be a clumsy way to do it.  I then played with the various «write to...» "vi is available.

  For a relatively small set like that, is it interesting to a file rather than another type?  Of course, much data could go directly into an excel file, even if it should be reformatted to strings to store in the text.  I have little or no experience with bianary files.

  All file types are easier to load then go?

  And is it possible to have the (previously saved) functions available and selectable ring of menu, or will it prompt the user?

  That said, I'm looking for some general advice on the region.  I've read all the help files associated with and read some threads on the specific issue.  But being new, I'd like to hear how you professionals would approach this function.

  My current code is attached.

  
  

• Error: "there was a disk error when you write to the file C\:Program files (x 86) \microsoft games\dungeon siege\resources\objects.dsres" during the installation of Dungeon Siege.

  When I try to install it it comes up with an error about 16% in the installation, saying that there is a disk error when you write to the file C\:Program files (x 86) \microsoft games\dungeon siege\resources\objects.dsres

  Any ideas?

  Hi MouseToe,

  What version of Dungeon Siege you trying to install?

  The cause of this problem could be the corrupted resource (.dsres) file or disk error. Here are some things you can do to solve the problem.

  Method 1: Run the disk check.

   

  Check the integrity of your hard disk for lost clusters and errors.

  To do this, follow the steps in this article: check a drive for errors

  Method 2: Defragment the hard disk.

  This improves the performance of your hard drive.

  Reference: improve performance by defragmenting your hard drive

  Method 3: Run the game as administrator.

  Here's how:

  (a) right click on the game configuration file.

  (b) choose 'Run as administrator'.

  Method 4: Try to install the game in a different folder or to a different drive

   

  Try to install the game in a different folder. If the computer has another hard disk, try to install the game on the other hard drive.

  Follow these steps.

  a. Insert the game disc in the drive.

  Note: Do not click on Quick Installation during installation.

  b. follow the setting menus until you see the change button.

  c. click change.

  d. in the path box, delete the existing path, and then type the following text:

  drive: \Program Files\Microsoftgame name Games\

  In this example,drive is the letter of the hard disk drive and the name of the game is the name of the game you are trying to install.

  e. click OK when finished.

  f. follow the instructions that appear on the screen to install the game.

  This should be it.

  For more information, please visit:

  http://support.Microsoft.com/dungeonsiegeiifaq

  For additional assistance, please post your concerns at the forum below.

  http://www.Microsoft.com/games/en-us/community/pages/forums.aspx

  Kind regards

  Shinmila H - Microsoft Support

  Visit our Microsoft answers feedback Forum and let us know what you think.

• Write to the file of measurement with a loop For using the value of the dynamic data attributes

  I looked and looked, but couldn't find a solution for this.

  I currently have 15 points of different data that I try to write in an Excel file.  I have all combined in a table and lie with the function "write into a file position.  However, the column names are always "Untitled", "Untitled 1" etc.  I then used the function 'Set the Dynamic Data attributes'; but for this I have to do 15 different functions "set data dynamic attributes.  It was suggested to use a loop with the function 'Set the Dynamic Data attributes' inside of her, but I can't find how do.

  I have several arrays consisting of 15 different values for 'Signal Index' 'Name of Signal' and 'Unit', but also a unique 'get Date/Time In Seconds' related to 'Timestamp '.  The problem is that the error I get when I try to connect the output with Scripture at the entrance to measure file:

  The source type is dynamic data table 1 d.  The type of sink is Dynamic Data.

  How can I fix it?  I have attached a picture of my installation; Sorry if this is gross (I'm new on this!).  Thank you!

  It will get rid of the error, but it is not quite correct. What you need to do after that is to click on the output or the tunnel entry and select 'replace with the shift register. In addition, the array of values that you have wired to the Signal Index is wrong. Arrays are 0 based. Just wire the iteration Terminal here. And, finally, take the size of the table and this connection to the N terminal are stupid. Don't wire nothing to this.

• iTunes error: the library iTune .itl file is locked. On a locked disk or you do not write to this file permission

  Original title: iTunes

  I have just updated from XP to 7. I downloaded Windows Easy Transfer, but it wouldn't work if I copied all my files on my external drive myself.

  Once Windows 7 had loaded, I started to transfer them to my computer.

  I tried just down load iTunes 10.1.1 from the internet, and everything seemed to go ok.

  But iTunes is not working and I get the following message "the library iTune .itl file is locked. "On a locked disk or youdo not write permissionfor this file."

  I saw this message on iTunes support and it is said that the 'My music' folder is located in the default location in Windows XP.

  Does that mean I lost my music and what should I do to be able to access/download the iTunes player.

  I have songs on different drives so I have quite lost music. I am simply unable to play my iTunes library because I can't access the drive.

  Thank you.

  P.s. I'm not very good with computers.

  Hello
   
  
  Change the permissions on the folder / my music/itunes (and all subfolders and files) so that it is not "read-only".
  Here's how:
  a. by doing a right click on the name of the iTunes folder, and then select Properties.
  b. you will see the read-only check box. Make sure it is disabled.
   
  Topic: The iTunes Library.itl file is locked
  http://discussions.Apple.com/thread.jspa?threadID=2678797&TSTART=0
   
  Topic: iTunes Library.itl file is locked on a locked disk or no write permission
  http://discussions.Apple.com/thread.jspa?threadID=2051801
   
  Topic: iTunes Library.itl file is locked?
  http://discussions.Apple.com/thread.jspa?threadID=1578017
   
  I hope this helps.

  Thank you, and in what concerns:
  Shekhar S - Microsoft technical support.

  Visit our Microsoft answers feedback Forum and let us know what you think.
  If this post can help solve your problem, please click the 'Mark as answer' or 'Useful' at the top of this message. Marking a post as answer, or relatively useful, you help others find the answer more quickly.

• A write to the file without error number error

  Hi all
  
  I have this error in 3 different cube:
  
  A write to a file [essbase/e22/app/appli/database/ess00022.pag], [0x3ce329d0] address with handle [135] to compensate for the bytes [0], [886063104] failed with error [2] after [6607] bytes.
  ...
  A write to a file [essbase/e20/app/appli/database/ess00022.pag], [0x2da58670] address with handle [157] to compensate for the bytes [0], [886071296] failed with error [0] after [2687] bytes.
  ...
  A write to a file [essbase/e13/app/appli/database/ess00007.pag], [0x2da58670] address with handle [164] to compensate for the bytes [0], [338931712] failed with error [2] after [3431] bytes.
  
  For this cube, I use four storage partitions: e22, e20, e13 and e18.
  The error occurs in the last page of each partition file (each partition is 45).
  The final cube exceeds 100 GB as the other 2.
  
  Lower cube 45 works very well.
  
  Can someone help me?
  
  Thank you

  I don't know if this will help, but in the interest of eliminating the causes possible, you could...

  Try to run without parallel calc
  Try to set a bit (> 2 GB?) less than the 'real' maximum available space on each volume when Essbase data volumes are set up

  If you have not already, I would certainly raise an Oracle support for this call. Out of curiosity, what platform / version?

• ORA-19502: write error on file ' / db01/backup/df_680613030_3_1 ', blockno 131

  No matter what work-around to the level of rman?
  
  
  RMAN-00571: ===========================================================
  RMAN-00569: = ERROR MESSAGE STACK FOLLOWS =.
  RMAN-00571: ===========================================================
  RMAN-03009: failure of the backup command on the channel ORA_DISK_1 at 2009-03-04 11:11:07
  ORA-19502: write error on file ' / db01/backup/df_680613030_3_1 ', blockno 131201 (blocksize = 8192)
  ORA-27063: number of bytes read or written is incorrect
  IBM AIX RISC System/6000 error: 27: file too large
  Additional information:-1
  Additional information: 1048576
  ORA-19502: write error on file ' / db01/backup/df_680613030_3_1 ', blockno 131073 (blocksize = 8192)
  ORA-27063: number of bytes read or written is incorrect
  IBM AIX RISC System/6000 error: 27: file too large

  Apparently, your file/db01/oradata system supports large files - that's how you happen to have a big current data files. But/db01/backup is a system of different files NOT created and mounted with largefile support.

  Talk to your administrator to AIX to know the difference between the systems/db01/oradata and/db01/backup.

• error: could not write the destination file (1 003)

  I am trying to export 40 photos of Photos.  I just installed OX El Capitan.  Only 13 of them get downloadable.  For the rest, I get this message: error: could not write the destination file (1 003)

  I tried to manually fix the library but still does not work (command + option + opening photos).

  And I do not have a backup on icloud photo library I have a backup on an external drive...

  You try to export the originals of your photos or revised versions?

  When you try to export photos to?

  You try to export to a folder on your system drive or a folder on an external drive?  If an external drive, which is the file system? And how the player is connected?

  You have permissions to write to the folder, when you export to?