API to programmatically read the rate?

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  Hi UMA_Jen,

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• How to read the counter NI9411 using C API data?

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  My device and any other names are correct?

  Thank you.

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  The express VI are some operations that could be easily dealt with native LabVIEW code.  Would like to get rid of these express VI.  The first formula node has some pretty basic with as well.  The largest node formula could also be done with the LabVIEW base operations, but logic programming going on in it is complicated enough that I would probably leave this formula node as it is.

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  We used the 'recording' and 'streaming' API of VeriStand, and I can confirm that the flow is equal to that of the loop of real-time data. The Kz 15 data source is used to provide enough slow data API "read channel".

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  concerning

  Pascal

  Hello, PBAN,.

  You can use the configuration API of the system OR of y to achieve:

  https://decibel.NI.com/content/docs/doc-13216

  Using this API, you can easily create examples such as the attachment.

  But there is much more to this API, then just this example (or rename aliases).
  The NOR example Finder should provide you with enough examples.

  The attached Code is provided as is. It has not been tested or validated as a product for use in a deployed application or system, or for use in dangerous environments. You assume all risk for use of the Code and the use of the Code is subject to the license terms of Sample Code which can be found at:

  http://NI.com/samplecodelicense

  Alternatively, you can also read the alias of your hard drive ini file and modify it programmatically:

  http://digital.NI.com/public.nsf/allkb/F02B2BF8943A31D786257393005D16F1

  If you plan to use the second approach, then copy the configuration file screw that allows to read/write .ini files and default abailable in LabVIEW.

• Problem in reading the PWM signals in myRIO 1900

  Hi guys,.

  I work with myRIO to generate PWM pulses.

  Here is the block diagram of my circuit.

  

  I connected external to the analog input pin PWM pin. So I can watch the PWM pulse in the waveform table.

  But the waveform is not clear. This is as shown in the screenshot.

  

  

  See that the waveform is not correct. When I'm watching the same PWM pulses in the CRO (cathode ray Oscilloscope, oscilloscope real in the real world), I get exactly the waveform. that is, the PWM pulses are generated correctly. But the analog read is unable to read the PWM pulses.

  I faced the same problem with the pin of analog reading earlier when I read the input voltage. Is not give continuous reading of the voltage input.

  Please guide me how to read these impulses via analog read.

  Please tell me at what frequency range, I can use this myRIO to generate impulses?

  I am able to use 40 kHz?

  Hi rcs.
  The desired pulse frequency is 10 KHz. My sampling rate must therefore 100 kHz, which is not possible in data acquisition mode. There is another problem with the myRIO. Only AI0, BI0 and CI0 has n-sample mode. The analog input pins is still have no n-sample mode. But in my project, I need 4 pins of I in n-sample mode, which is not possible. In addition, the sampling rate should also be favourable, which does not happen in my case. We can say that this is a disadvantage of myRIO with data acquisition mode.
  The only alternative to solve this problem is to use FPGA in myRIO.
  He can taste a 25nS rate.
  But little complexity is there

• How to read the Serial Arduino data using labview VISA?

  Hi =). Im a beginner work reading data series from an arduino but im facing... Lets do it step by step

  I built a voltage divider circuit which gives from output
  from 0 to 5V. The output of this circuit is sent to a 0 analog input pin
  of a Committee of Arduino Duemilanove.

  (1) Firstly, I connected the cable to connect to my laptop USB the Arduino.

  (2) I went to start-> control
  Control Panel-> system-> hardware-> Device Manager. Check the Ports (COM
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  LabVIEW that I must read the data series COM 4.

  (3) to the side of the arduino, here's the code to read changes in voltage
  entered to analog pin 0. The last line of 'delay' determines the sampling
  Rate of how we want to taste the output of the voltage divider:

  int potPin = 0;    Select the input pin for the output of the voltage divider
  int val = 0;       variable to store the value from the probe

  void setup()
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  Serial.begin(9600) (9600);    Opens the serial port, establishes the rate of 9600 bps data
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  void loop() {}
  Val = analogRead (potPin); read the value of the voltage divider
  Serial.println (Val);
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  I slightly modified the basis series reading writing VI... I have
  attached the block schema used with comments. Basically, I tried to read
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  variations of the voltage divider circuit.  But Im not getting
  the correct voltage output values. The value of the tension just keeps go
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  Could you guys please guide me on what went wrong?

  Thank you!

  -you read the data, even if there is no data on the port. If 0 bytes are read => «»

  -in the case of false, you resources VISA wired for the output of channel tunnel?

  -There is no close VISA at the end of the VI resources

  -you're not a loop this VI reading bytes

  I added an addaption of your VI that you should give a try maybe

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  is it possible to read the size in pixels of a digital camera by programming with IMAQdx?

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  Horizontal/vertical pixel size

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  Thanks in advance.

  Thomas

  Hi Thomas,

  If the seller has exposed this information as an attribute via their XML file is the only way to see that by programming. I looked at a few aces Basler I, and none of them seemed to have this information. They have an attribute called PixelSize, but refers to the bits per pixel and not the physical size. I skimmed the GenICam Standard characteristic Naming Convention to see if there is a feature of GenICam standard for what you are looking for and have not seen one. Unfortunately, it seems that you will not be able to get this information programmatically.

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• read the measure about 10 lines instead of each line

  Hello.

  I have the dilemma.

  I have a file of great extent with 1ms rate and number of columns. If a single line, a miliseconds.

  Now, I don't need this big resolution, I only need data to 40 ms.

  How can I do?

  Thank you.

  Something like that.  I clicked on the text file reading and has configured to read the lines, reading 10 lines at once.