How to hide an array in the block diagram
Hello all, I'm working on a LV VI that will send out a voltage from a laptop to a circuit (with an op amp), amplify the voltage, then send it back into the laptop. There is a numeric control which the...
View ArticleIndependent Sample and log rates
I would like to log data at 0.5 second intervals while the daq assistant acquires data at 1KHz, I tried using the write to measurement file express vi but couldn't separate the sampling and logging...
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reading soundcard line in port
Hi I want to read data from Line In port of my PC's soundcard, but I don't know how?I have read data from Mic In port of the soundcard by the "Sound Input VIs".but when I disconnect the input signal...
View ArticleBuilding an application(Exe)
Hey guys i am trying to build an application of my VI's in labview 2012 but there is no option of application(exe) when i right click build specification even though i have saved the project. Kindly...
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Serial Write and Read
Hello everybody,I have a problem with serial comunication - when I put '8', I receive some unusual characters like 'Ć', and then '8'. On the end - error. I did something wrong?
View ArticleReading multiple soundcards
Hi every body I want to read three different soundcards simultaneously by LabVIEW. Is it possible and with which VI?I tried to use three sound configuration input VI and open three soundcards VI...
View ArticleDefault sampling rate
Hi alli have an ni pci 6239 card. i'am using this device to generate waveform with sample timing set to "sample clock" and sample mode set to "continous"if i do not specify the sampling rate...
View Articlefpga
I need help with a FPGA problem. I want to look at 48 DIO's and everytime there is a change I want to record the I/O state and time. This can happen over a period of 10 seconds or so. the duration...
View ArticleFluke 1120A
Has anyone had success using NI GPIB cards or NI GPIB-USB to communicate with a Fluke 1120A IEEE-488 translator. I am using this Fluke 1120A to retrieve the data from a Fluke 8921A True RMS voltmeter....
View ArticleChange 8-bit binary image back to 8-bit grayscale
Can some one help me please in NI vision how to convert the image back to grayscale after I did my thresholding by using 'IMAQ Local threshold' from a 8-bit grayscale to a binary image but the problem...
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VISA resource not listing options
I have a .VI that works fine on my windows 7 computer. When I move the arduino to my windows 8 computer, the VISA resource for the Arduino init icon does not recognize com ports. Only option is...
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simple state machine Where to begin?
Hello Got a question that is simple for the experienced people here I guess. But don't know where to start..... Here is what I want to try to do: I have got a lot of inputs, to keep the question simple...
View ArticleChannel OFF/ON program
Hi I'm building a program which send a command to microcontroller, for instance: send number '1' --> channel ADC 1 OFF. And there is my problem: I have 4 channels, which measure ADC voltage on...
View Articlewt3000
Hello, I am new to labview and wt3000.I am trying to get some reading from wt3000 using labview via LAN. I can connect to wt3000. I can see the instrument connected in the MAX. But when i run the vi i...
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Monitoring Thermocouple Temperature on Labview
In our project we are trying to get different temperature values from different thermocouples connected to our NI DAQ.When we run the program we get different temperature values from .xls file but we...
View Articlelabview
We are working with SMA Actuator and try to control it using PID Controller.We are using DAQ System NI PXIE-6341. We are working with NI PID toolkit and are using PID Autotuning vi.Our plant open loop...
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How to link two controls?
Hi, I'm trying to link two controls together, a slider and a numeric, so that if I change the value of one control, the other will also show the new value. Does anyone knows how to do that? Is that...
View ArticleIssues with labview execution 2 visa resource
I am using two while loops in a labview code - one connects to a motor controller and other is used to connect to an agilent multimeter. As soon as I execute this VI, the loop connecting to the...
View ArticleSynchronization issues in labview between NI PXIe-6368 and PXIe-4492 cards
Dear community,It has been some weeks that I’m fighting with synchronization purpose in Labview and I appeal to the community to get some suggestions.The problem is a problem of synchronization between...
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what kind of refnum to use
I am nearing completion of my VI...thanks to those of you who have helped. I've run into what I hope is one of my final issues. Brief refresh - I parse a text file then create a bunch of...
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