Reading / writing to the HP 8562 A of Labview with GPIB Spectrum Analyzer.

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  Hi all

  Firstly, sorry if my question is already posted, but I tried searching with nothing doesn't.

  My situation: I have a HP digital osciloscope, a HP 54602 B using the GPIB and trial version of labview 8.6. Now, I want to communicate with her from labview. The big question is: how? Before that I used only labview with NI DAQ card and serial port for communications of the instrument.

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  1 is it important (to programming in labview later) what GPIB interface that I use in my computer? Must be of OR? I still have no interface right now.

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  Hi opiq;

  Welcome to the world of instrument in LabVIEW Control!  I'll try and answer your questions one-at-a-time:

  1. N ° from a point of view of LabVIEW, you can use any interface supported by VISA and your instrument bus.  This includes (but is not limited to) boards of NOR-GPIB, 3rd-party GPIB, USB, LAN, LXI, VXI, PXI, etc..  Of course, if you do not have a GPIB interface, I would recommend a NEITHER - this is the safest way to get the experience 'it works '.  I tend to use an adapter USB GPIB (DISCLAIMER - I work for the OR).
  2. You have two options for installing the device driver.  "" The simplest is in LabVIEW to select Tools "Instrumentation" instrument Drivers find... and use our instrument driver search tool which will be step helps you locate, by downloading and installing the driver.  The other option is to download the zip file, unzip it in \National Instruments\LabVIEW 8.6\instr.lib and restart LabVIEW.  So if you look in your palette of instrumentation, you should see the driver listed under instrument drivers.  The pilot will include some examples of the use of the driver (are all certified instrument drivers).

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     Here's a video of the above process (for a different instrument, but the process is the same)

  3. Unfortunately, there is not an easy way to simulate this instrument.  I would just recommend familiarizing yourself with the examples before acquiring a GPIB interface.

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  03/04/2016 10:33:59.986 sandboxd [12973]: ostraceutil (12971) ([12971]) political system: refuse the forbidden-link-priv

  03/04/2016 10:34:00.113 sandboxd [12973]: ostraceutil (12971) ([12971]) political system: refuse the forbidden-link-priv

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  03/04/2016 10:35:38.000 kernel [0]: sandbox: ostraceutil (13068) political system: deny (1) forbidden-link-priv

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  03/04/2016 10:35:42.000 kernel [0]: sandbox: bird (13038) deny (1) - reading-data /Users/xxxxxxxxxx/Library/Preferences/com.apple.security.plist file

  03/04/2016 10:35:47.000 kernel [0]: sandbox: suggestd (13039) deny (1) - reading-file data/users/xxxxxxxxxx/Library/Preferences /. GlobalPreferences.plist

  03/04/2016 10:35:47.000 kernel [0]: sandbox: suggestd (13039) deny (1) - reading-file data/users/xxxxxxxxxx/Library/Preferences/ByHost /. GlobalPreferences.A97D18FF - CD14-5 EF7 - 81 B 3 - 2CF852AA7364.plist

  03/04/2016 10:36:19.000 kernel [0]: sandbox: bird (13100) deny (1) - reading-data /Users/xxxxxxxxxx/Library/Preferences/com.apple.security.plist file

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  03/04/2016 10:36:50.270 sandboxd [13115]: ostraceutil (13145) ([13145]) political system: refuse the forbidden-link-priv

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  03/04/2016 10:37:11.000 kernel [0]: sandbox: ostraceutil (13191) political system: deny (1) forbidden-link-priv

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  03/04/2016 10:48:27.000 kernel [0]: sandbox: coreduetd (13632) deny (1) - metadata-reading files/Applications/App Store.app

  03/04/2016 10:48:27.000 kernel [0]: sandbox: coreduetd (13632) deny (1) - metadata-reading files/Applications/App Store.app

  03/04/2016 10:48:27.000 kernel [0]: sandbox: coreduetd (13632) deny (1) - metadata-reading files/Applications/App Store.app

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  03/04/2016 10:48:27.000 kernel [0]: sandbox: coreduetd (13632) deny (1) - metadata-reading files /Applications/Automator.app

  03/04/2016 10:48:27.000 kernel [0]: sandbox: coreduetd (13632) deny (1) - metadata-reading files /Applications/Automator.app

  03/04/2016 10:48:27.000 kernel [0]: sandbox: coreduetd (13632) deny (1) - metadata-reading files /Applications/Automator.app

  03/04/2016 10:48:27.000 kernel [0]: sandbox: coreduetd (13632) deny (1) - metadata-reading files /Applications/Automator.app

  03/04/2016 10:48:27.000 kernel [0]: sandbox: coreduetd (13632) deny (1) - metadata-reading files /Applications/Calculator.app

  03/04/2016 10:48:27.000 kernel [0]: sandbox: coreduetd (13632) deny (1) - metadata-reading files /Applications/Calculator.app

  [...]

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  03/04/2016 11:22:24.531 sandboxd [17483]: coreduetd (17453) ([17453]) deny com.apple.lsd.mapdb mach-search

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  03/04/2016 11:22:24.792 sandboxd [17483]: coreduetd (17453) ([17453]) deny file-read-metadata.

  03/04/2016 11:22:25.000 kernel [0]: sandbox: com.apple.Addres (17484) deny (1) / private/var/run/mDNSResponder network-outgoing

  03/04/2016 11:22:26.000 kernel [0]: sandbox: com.apple.Addres (17484) deny (1) / private/var/run/mDNSResponder network-outgoing

  03/04/2016 11:22:28.000 kernel [0]: sandbox: com.apple.Addres (17484) deny (1) / private/var/run/mDNSResponder network-outgoing

  03/04/2016 11:22:28.000 kernel [0]: sandbox: com.apple.Addres (17484) deny (1) / private/var/run/mDNSResponder network-outgoing

  03/04/2016 11:22:29.000 kernel [0]: sandbox: com.apple.Addres (17484) deny (1) / private/var/run/mDNSResponder network-outgoing

  03/04/2016 11:22:30.000 kernel [0]: sandbox: com.apple.Addres (17484) deny (1) / private/var/run/mDNSResponder network-outgoing

  03/04/2016 11:22:31.000 kernel [0]: sandbox: com.apple.Addres (17484) deny (1) / private/var/run/mDNSResponder network-outgoing

  03/04/2016 11:26:31.387 sandboxd [17483]: systemsoundserve (17493) ([17493]) deny-read-data file /usr/lib/libFosl_dynamic.dylib

  03/04/2016 11:26:31.520 sandboxd [17483]: systemsoundserve (17493) ([17493]) deny/private/var/root file-read-metadata

  03/04/2016 11:26:31.560 sandboxd [17483]: systemsoundserve (17493) ([17493]) deny-read-data file /usr/lib/libFosl_dynamic.dylib

  03/04/2016 11:26:31.637 sandboxd [17483]: systemsoundserve (17493) ([17493]) deny-read-data file/usr/lib/libScreenReader

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  I am a beginner with queues and I have a few questions.  I have attached a simple example of code that I wrote to better implement a consumer who can queue data and write on a worksheet after running the code.

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  Second, anyone have any suggestions to improve this code?  I've been playing with it for quite some time and I finally got to work like that, but it is certainly configured differently from the other examples I've seen.

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  The reason why you do not get the last element of the queue (at least not until you restart the VI) is that you have your automatic indexation tunnel that collects all the data to send to the writing on file SS service cable for moving to register.  So this last piece of data from the queue to get into the shift register, but it is not getting into the 2-D chart by the tunnel of automatic indexing up to the next iteration of the loop.  When you rerun the VI, as the shift register is not initialized, it is already there and became the first point of your next data execution.

  Why did you put the register shift in?  Just remove and just use the tunnel of automatic indexation.

  I don't know what you really want to do with the 2nd loop to say if the Notifier is correct or not.  But if you do not want to lose data in the other loop, then you need to use a second queue and have your producer loop enqueue data in the two queues, a queue for each consumer loop.

  With regard to the elements draws in the queue, seeing how your code is configured, the queue will almost always empty because the dequeue function will be ready to pull out the element immediately after the enqueue function puts in.  Unless you have your loop producer much faster than your consumer loop running, you will not see a build up of the elements.  (Try putting an expectation of more of 100 msec in your loop of consumer.  Then you will see elements accumulate in the queue.)

  I don't know why you put the spreadsheet feature writing after the loop.  Normal use for queues in an architecture of producer/consumer must transmit the data to a separate loop that contains the functions write file.  This way he can work at his own pace, but write the data and make sure that you do not lose it.  As you have now, if your code runs a long time, you may run out of memory when at the tunnel of automatic indexing table becomes too large.  And if your application crashes before you complete it with your stop button, then all data are lost because you did not it writes the file.

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  Hello everyone, nice day.

  I have what should be a very simple matter.

  I'm currently implemented a producer consumer-consumption-consumer architecture. (Loop acquisition > write disk acquisition > read data from disk data > display of the user based on the data.) In plain language, I have a created the data loop, a loop of these data, a loop of disc storage and a loop displays a user interface. (This isn't supposed to be a real-time application, and I am aware of the charge created by the writing and the reading of the disc). Just stick with me on this one.

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  Thank you all, thank you for the help.
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  Learning is alive.

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• Writing to the nodes property DAQmx channel does not refresh the channel values

  Hi all

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  I wish that my user must be able to modify the individual channels within the task.  To this end, I created a set of screws that allow it to change the settings appropriate to the channel (for example, if it is a channel of thermocouple, it can change the type of thermocouple, CRC value, etc... If it is a strain gauge channel, it can change the coefficient of fish and so on).  These screws all works beautifully, like the VI where they live.

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  Note that immediately after setting the property nodes, I read their values back, just to see what comes out back.

  The second image is an image of the public Service immediately after the execution of this VI.  Note that the values read from the channel property nodes did not updated to match to the set of values, but instead kept their initial configuration values:

  

  What I am doing wrong?  I fought this for a few days now and I'm stumped.

  Thanks for your time!

  Diane

  Hi, Diane.  A week ago, I also had a problem changing the channel properties (not sure that our situtions are exactly comparable, but...).  My 'solution' to want to change the appearance of the task was to just throw the original task and recreate all the elements of the task from scratch.

  I've not done enough 'experiments' to work when you can and cannot change, but am now much more cautious...

  Bob Schor

• 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.

• Suddenly, my T3i became slow in writing to the memory card.

  I used to be able to take pictures almost as fast as I could push the button, but now I have not more than 5 shots before I get the message of State BUSY and have to wait. Even with the burst mode. I have a fully charged battery and memory cards are formatted in the camera. It comes with both a Lexar SDHC 4 GB card and a SanDisk Ultra 16 GB card. This problem just started today; I had the camera since January.

  Are you sure that you are not only shoot faster and, thus, maybe that just now noticing for the first time?

  Without pulling my t3i to double check, 5 to 7 RAW images shot at ~ 3 FPS max burst rate of the noise the camera on the right side of what I lived with mine using 90 UHS-1 meg/s write speed cards.

  What write speed cards do you use? I vaguely remember reading somewhere that the t3i wrote about 40 MB/s, so if you use cards with speeds slower than that negatively affect your max burst until you hit that buffer writing dreaded.

• Longevity - Reading / writing

  I put a new SDSSDP - 064G in my desktop as my 'Disc' Ubuntu 12.04 operating system running PC.

  I read that I should restrict writing on the SSD as possible and there are a few tutorials linux giving directions to do this.

  HOWEVER

  I have also been informed that this consultant is no longer valid (strictly) as modern SSDS are much more tolerant of read/write operations repeated.

  What is the current advice please, and this should worry?

  These discs are estimated at something like 80 to written during life except if you make a few applications really write you probably don't need to worry.

• "Error 1310" error writing to the file: c:\config.msi\f2046.rbf "while trying to install Adobe.

  Atitle: how to fix error 1310?

  We have vista and I get this error when I try to download adobe reader: 1310.error error writing to the file: c:\config.msi\f2046.rbf. How can I fix this error? Also had trouble to update old adobe, so I uninstalled, so now I have no adobe reader.

  Hello

  -Is the issue limited only when trying to install Adobe programs?
  -Did you do changes on the computer before this problem?
   
  Method 1: Run the FIXIT from Microsoft from the link below and check if the problem persists.
  Solve problems with programs that cannot be installed or uninstalled
  http://support.Microsoft.com/mats/Program_Install_and_Uninstall/
   
  Method 2: I also suggest you to see the link below and check if that helps.
  Update errors. Acrobat, Reader | Windows
  http://helpx.Adobe.com/Acrobat/KB/update-errors-Acrobat-Reader-Windows.html
   
  Hope this information helps.