Controlling a DAQmx counter out duty cycle from a PID
Good dayI am trying to control the duty cycle of a counter output with a PID control.I found a VI online that will allow you change the frequency or duty cycle while the program is running by using...
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Missing installer media is other applications of mine
Having an issue creating an installer. It's similar to an issue that's been addressed before where you get this dialog about the selected installers not being available on the computer. Usually, this...
View ArticleProperties pop-up window not opening
This is a strange issue specific to a particular computer. When I open a large complex application (in LabVIEW 2017 SP2 64-bit; "Total" memory usage: ~5MB), right-click on a control and select...
View ArticleRT Linux USB to RS232
Good afternoon. I am trying to determine if one of the USB-C ports on a cRIO can be used to communicate with a device. Specifically, I may need to add RS-232 communication to a multimeter from a...
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Using Trigger Signal to Trigger Write to File
I am attempting to use an external digital signal to trigger the start of a write to an excel file when the digital signal goes down to -1V. I've also written in an "or" function to allow me to...
View ArticleRecording output voltage signal
I am performing some acoustic testing by generating band-limited white noise and recording the response on several microphones. I have a 200 ms time delay between when I begin generating the white...
View ArticleProblem of data acquisition using 'write to measurement file' vi
Hello I'm using Keysight VNA E5071C and obtaining data via Labview. I'm struggling for data acquisition when the number of data points is more than 400. When I input data points of more than 400(such...
View ArticleTx FIFO Underflow on 2943 120 MHz
Hi I'm having underflow issues while I was trying to transmit signals with higher sampling rate. Here's my hardware configuration:I have four 120 MHz USRP-2943 connecting to four PXIe-8374s, these...
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Scripting: Wire object into existing wire
I am writing a LV plugin, and have managed to create named bundlers and unbundlers on a wire. With a bundler, you can use the insert node on wire method, and thus place the node precisely where you...
View ArticleNI 9237 buffer overflow
Hi, I am using the NI 9237 to record pressure. According to pg 8 of the user manual the minimum sampling rate achievable is 1612 Hz (n=31). I need a very large buffer to store this data. Additionally,...
View ArticleReset averaging the Power Spectrum Density without first call
Hello, I am using the Power spectrum Density function to average 100 signals from a DAQ. This works well when I run it once then exit program.Now, I would like to repeat this averaging without exit the...
View ArticleRemote panel access stops after 1 second - client could not keep up with server
I have build a rather big project in labview 2018. It is running well on my Cdaq controller under linux RT. I managed to create the executable which includes the html-file that is needed for remote...
View ArticleHow to measure the Vpp, Vrms of a low frequency signal (
Hi, Can anyone suggest me to measure the Vpp, Vrms of low frequency signal (<10Hz i.e. 1Hz, 2Hz, 0.16Hz, 0.8Hz etc.) through DMM (PXI 4070) or Digitizer (PXI 5122).The DMM is not able to read the...
View ArticleRe: How to measure the Vpp, Vrms of a low frequency signal (
Hello,I am in need of help to set up a waveform using a Siglent 2042X. I am new to this science and am looking for someone whom I can give the waveform info to and have them build the waveform or...
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Asynchronous call memory leak on LV2019
I'm having problems in upgrading an application from LV2015 sp1 to LV2019 sp1. I detected memory leak after running the executable recompiled by new version of LabVIEW. After some debugging I found...
View ArticleLoad LabVIEW-created dll in .NET Framework or .net Core
Does anybody have experience with creating a normal dll in LabVIEW (not an interop assembly) and loading this dll in .net Framework or .net Core? I am trying to share LabVIEW code with .NET developers...
View ArticleHow to Open a batch File as a Standard User from System Exec.vi
Hello,I have to launch a batch file from LabVIEW. I use System Exec.vi to call command prompt to launch batch file.The batch file runs and immediately closes.Also, I have seen that if I go to the...
View ArticleExcel Find and Replace VI error
Hi： I am using Labview2018 with Report Generation. My PC is running Win10 and has Office2016 installed. I happened to find that "Excel Find and Replace.vi" is error. Does anyone konw...
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