Degrafa samples gauge

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• How to coordinate DAQmx sampling with TDMS in while loop?

  I tried to connect the functions DAQmx data to the conventional method of flow TDMS a while loop. The problem is that I can never synchronize the sampling frequency of DAQmx data and the function of the elapsed time. In fact, change the sampling clock service rate does not affect the sample rate in the PDM. The data saved in the TDMS file remain at a constant speed.

  This causes me a massive problem when come to process the data.

  I join the labview code and one of the data.

  Can someone tell me what I did wrong here?

  tonger wrote:

  Thanks for the reply, Norbert.

  Reading in the 1 d waveform can save only 1 channel data. Potentially, I would like to save the data of multi and accelerometer strain gauges at the same time.

  Also, I can not always change the sampling frequency...  I think that it is still in 0.000620, which is not good for the subsequent analysis of the data.

  Is there another way to solve this problem?

  This statement on the record only one channel is absurd. And your solution two loop is just as wrong. A 1 d waveform contains so many channels that you specify and it has a current timestamp inside - not number asychronous since a different loop.

• DAQmx task Read DAQmx with sampling frequency of 10 Hz produced much too much data

  I have a simple configuration with a strain of channel 4 OR-9237 amp holds a carrier of series C of WLS - 9163 (wired ethernet mode) - Details probably does not matter.

  I used MAX to create a DAQmx task associated with which all four gauges samples.  The calendar setting is "Scan Loads" is continuous sampling, 2 k buffer (read samples) and 10 Hz rate.  I guess that this task would generate 40 data values per second - 10 for each channel.

  I have a simple loop of reading using DAQmx Read.vi that works always (without any stimulation time).  Playback is set to read all available data and then pump it into a table.
  In the attached example, I also added a few words of debugging to stop the loop after N iterations.

  As the loop is programmed with a 0.2 second period, I expect each pass of the loop to read about 8 samples or 2 samples per sensor.  Instead, I get hundreds each passage.  It's like reading has substituted the sampling frequency specified in the task of the unit.  I absolutely need data to be material to the rhythm.

  Where have I lost?

  Thanks Adnan,

  I changed your example I selected 'Strain gage' entry analog and then lowered the minimum and maximum thresholds to +-1-2.  What happens is that each other in the loop, I 2048 samples or zero samples.  The display flashes a whole line and then it clears any other past.

  In response to your second post, I understand that the loop cannot run quite right that I select.  I think that, but at a sampling frequency of 10 Hz, I have to sleep on the software side for nearly a minute before I built 2 K samples.

  I played with the frequency of sampling, assigning to various values from 0.1 to 10000Hz.  The behavior is the same until I approach the high rates where available samples remains to 2048-4096 sometimes, the display becomes continuous.

  Ahhh, Darn.  Yet another search was this link that points to the root of my confusion.  The 9237 can taste arbitrary rates using its internal clock.  Duoh!  I wish that the pilots are smart enough to warn you if there is a discrepancy between the selected sampling rate and capabilities of the device

• Can I do a waveform graph view more samples currently read?

  I have DAQ 17 channels at a rate of 500 samples per second read and then write in a PDM file and a few gauges, a waveform graph.  I'd like to graph waveform to display more than the samples that are currently read, I want to only show the last 10 seconds worth of samples.  How can I accomplish this?

  I have attached a picture of the relevant section of my VI. If you need more information about the VI let me know.

  Thank you!

  Hello

  As mentioned by Smercurio_fc also, you can use the shift register, etc. of functional global variable or use waveform table and increase the length of the history of the chart.

  Kind regards

  Leila

• Display of information from the data CAN at a gauge table

  Hello

  I'm new to Labview and just know the basics. I use a sample code to send and receive messages CAN. I need to view the data of received messages (only the first two bytes) on two gauges, i.e. the first two values of the data matrix. Is it possible to do? Also, it would be useful if I could control the value of the first byte of data using a button or dial. Any help would be appreciated.

  Thank you

  Brian

  Hello Brian,.

  You can use the "Subset of the table" function in your range of tables in your diagram and choose zero index and size two (2 items out of the table) in order to extract the first two values.

  Here is a link to the help of the service document:

  http://zone.NI.com/reference/en-XX/help/371361E-01/Glang/array_subset/

  You can have all of your comments as a control and set the default values for the items you want to change. You can access this property by setting the value on the control, and then right-click on it to go to the "information Operations" then 'Create this value default value'. Then, you can right click the control you want to change and replace with a dial. Make sure you only select properly its representation. For example, a byte you would probably select U8.

  Attached is an example, please take a look and let me know if it helps.

  Kind regards

  Michael S.
  Technical sales engineer
  NEITHER UK & Ireland

• Compensation of temperature for the strain gauges

  I'm trying to compensate for the effects of temperature on an extensometer placed on a sample of carbon fiber.  The sample will be only responsible uniaxialement.  The temperature is a major concern here, for an electrical current will be executed by him for purposes of measurement, which should also heat the sample.  I read in the document 'Strain gauges measure' on the website of NOR (http://www.ni.com/white-paper/3642/en), but he speaks with a Measurer of mannequin, he speaks not just how this second pledge, placed perpendicularly to the axis of the applied force, we are not talking of how connect to the strain gauge module , in my case the NI 9235, to use for temperature compensation.  My first thought was just connect each pledge to the module as their own separate channels, using quarter-bridge in the LabVIEW software set up, calibrate the two gauges while not external physical load or temperature effects are applied, and then, after the test, by subtracting the measure pledge Sham in the values of assets pledged.  But then I started wondering, is there a better way to do this?  Can I use the half-bridge configuration, or some other configuration with the 9235 to automatically merge the readings two pledge during the test?

  I'd appreciate it really any advice that anyone can give me on this.  I don't want to build my own external wheatstone bridge (other than the built-in NI 9235), and I would like to make these measurements as accurate as possible.  I have also considered the possibility of the compensators measurers, but I don't think this would be applicable in this case, the complexity of the matter - being a composite.

  Hello WyoEng,

  You want to use the temperature compensation is referred to as a quarter bridge II configuration (image below). This configuration is very similar to a half of the bridge, while the second element (R3) is inactive because it is placed transversely to the direction of the load, without strain and in the same location the active gage (R4) to take account of thermal affect.

  

  NI 9235 supports only a quarter bridge I configuration for measures of constraints.  You will get an error if you try to use this module for any other configuration of pledge of strain that is not quarter bridge I. Thus, active policy that you asked to use two channels to read the pledge and the dummy gage will be the best option to use NI 9235 to compensate for thermal effects on your extensometer.

  Another option would be to look on the NI 9237 which supports a quarter bridge II configuration.

  Best regards

  Izzy O.

  Technical sales engineer

  National Instruments

  NI.com/support

• ADF DVT gauge LED change arrow

  Hello

  I do not understand it in the ADF indicator DVT LED component, but is it possible to achieve.

  In accordance with a particular threshold, then how to display an arrow pointing upwards if it is greater than the threshold and an arrow pointing down so it is below the threshold?

  <dvt:gauge id="gauge1" gaugeType="LED" ledStyle="LS_ARROW"
                                 shortDesc="Sample" value="300" maxValue="3500.0">
      <dvt:gaugeBackground>
          <dvt:specialEffects/>
      </dvt:gaugeBackground>
      <dvt:topLabel/>
      <dvt:bottomLabel/>
      <dvt:metricLabel position="LP_NONE"/>
      <dvt:thresholdSet>
          <dvt:threshold thresholdMaxValue="500"/>
      </dvt:thresholdSet>
  </dvt:gauge>
  

  The arrow just keeps pointing down

  JDEV 11G

  By creating the LED indicator, you can remove the average threshold if you wouldn't want a horizontal arrow yellow.

  In my example, I used the employees table in the schema HR with SKING with a salary of 24000

  If I set the low threshold to 25000 and the middle of 25001 then I get a red down arrow.

  If I can update his salary to 26000 and refresh the Web page then the arrow changes to the TOP and the green.

  Basically, just put the threshold down to above the measured value and you will have a red arrow down - if you set this value below, then, you will have a green arrow pointing at.

• Circular graphic help of gauge

  Hi all:

  I'm looking for help on creating chart circular gauge.

  The model foglight opens when you click on that gauge circular, that's exactly what I'm looking for.

  I have a metric data against 'count' I want to draw it. It can vary in hundreds of each sampling - like 350,180,470,790,230, etc...

  I would like to draw as a circular gauge that has say (static) as long as the maximum threshold of 1000 and 0 as the minimum threshold. The maximum if possible can be dynamic based on the data collected during the specified time interval. The tick at one point must be the current value sampled in the gauge.

  Now when I do the definition is what I can specify the metric. I played a little 'MinMax Show', 'Threshold to show' etc. but all it gives me is a graph that has the tick at the end maximum say 420 for this particular sample.

  I was looking for some Foglight UI viewpoints for a few references but did not find any.

  Please can someone understand me a little better on the way to draw it or show me an example that I can use. I read the doc page, but I'm not anywhere with her.

  Any help is greatly appreciated.

  Thank you very much!

  APO - Barro

  Hi Baro,

  The function that I used is very simple: it returns the name of the parent object of the metric:

  The definition of this function is:

  return metric.getContainer () .getName)

  Kind regards

  Brian Wheeldon

• Libraries of different ESX24 samples?

  Please can someone explain why I find different versions of the libraries of the ESX24 samples in Logic Pro X? Let me give you an example: if I create a new track of software and go to Orchestral-> Strings, I see this in the library:

  

  But if I create a new track of software, select EXS24 in the channel strip and then go to the Orchestral-> Strings, I see this in the library:

  

  Are these different samples? And stored in different places?

  Hi Broadskins, when you click on left of the channel strip settings (placed above the area of the EQ) that you look at the PATCHES of library, not the sounds of ESX24. (your first photo attached)

  When you click on left the ESX24 (or any that you instrument can be loaded) you look at its sounds from library or its own presets. (your second photo attached)

  Don't forget the small BLUE arrow on the left of the boxes is that you said that you look in the

  Library on the left.

  

  

• Specific sampling rate?

  So maybe this is a stupid question, but I need to know because I train for a specific sound. Is there a way [to logic] to shoot/change of a certain frequency sampling rates. I can imitate the sound I'm looking for with a low pass filter, reverb and a distortion. But I don't want to 'emulate', this sound, I want to create. Then I can put my own effects and play with it like I want to. If I have to use a bunch of effects to make it sound like I want that also the addition of said effects remove the sound and sound horrible. as to where pulling the sampling frequency of the high frequency and no downs will make me THE noise that I need and always allow to add nice effects to make MY sound instead of someone else. I hope you know what I mean. Let me to you specific real once more. I want to pull or carry a certain frequency sampling rates for a sound under water. I don't want to use filters to make the sound. So can you please help me. I invited everyone locally on how to do it and nothing works. Also if this is not possible in the logic of tell me if there are third party plug ins or maybe even a different DAW that could do like komplete Kontrol or audacity.

  Effect under water

  See if this thread is helpful at all...

• Synchronize book samples IBook?

  I can sync iBooks purchased on all my devices but iBook samples

  does not synchronize. It is built in iBooks property or a mistake on my part.

  Indicators are defined the same as those purchased books.

  The samples are not synchronized between devices

• EXS24 sampler

  Hello

  I was wondering if I could use the sounds I downloaded logic pro x (like 30 gb of sounds) in the exs24 sampler...

  The problem is: when I go on the button 'Browse', I can't find any sound to drag on the sampler...

  Help, please!

  Try this... (hard drive) - Instruments/Library/Application Support/logic/Sampler /.

• View sample screens. Your entire site is apparently only text

  I'm thinking about your product, but I can't see the sample screens.

  finitarry, the product on the right side of the display and forum section is not Firefox and Thunderbird.

  The page for Thunderbird is https://www.mozilla.org/en-US/thunderbird/features/ and is listed on https://www.mozilla.org/en-US/thunderbird/ as a link of features.

• Load audio files in Mainstage 3 sampler

  Is it possible to load files in without Logic Pro EXS24 sampler? I have not (logical) but I can't figure out how to get the sound files to play on the sampler. I will create new areas and load an existing file is however will not play. Something I noticed is that I should be able to drag and drop a file in the editor, but it does not allow me to do. I just need to get the logic? Or is it possible to load files that I don't know?

  It seems like you did right. To make sure, that the basic functionality working, please try this:

  Create a channel with an EX. Strip

  Press the change in the UI EXES to open the instrument Editor.

  The Editor opens with an empty sampler instrument.

  Drag an audio file in the editor.

  Now, press a key to play the audio file.

  Can you confirm that it does not work?

  Best,

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• Amazon MP3 samples do not play

  When you try to play an MP3 "sample" on Amazon.com I get the Amazon "error". When I go to the site Amazon.com which has an album and try to read a sample I get the "not available" message from Amazon I called Amazon and deleted all my cookies restarted my router and still nothing. Either by the way, I can play MP3 samples with Google Chrome. Any help out there? Thank you.

  I had the same problem. I use the https 'everywhere' add on. Disable for Amazon sites fixed this problem for me.