Error while processing VISA signal through MatLab script
Hello there, I am trying to make a simple voltage aquisition from a VISA connected Multimeter, feed the voltage reading (it's an array, but I feed only the frist element for this example, just until i...
View ArticleError 1184 extracting website data
Hi I have a code which takes thermocouple temperatures from a DAQ every 5 minutes and also takes weather data from this website at the same time: http://willowsweather.1066.net It writes all of the...
View ArticleLabVIEW crahses after passing structure pointers to DLL from LabVIEW
Hi, I have a DLL which returns a table (array) of 33 values after passing its arguments correctly.I need to pass two structure pointers as arguments to an API of this DLL from LabVIEW.For this, I have...
View Articlevi server - Error 1000
Good Morning All,I have two simple VIs thats basically running timer with nothing else (Vis are called Left and Right). I am trying to learn and understand VI server capabilities. Eventually I will...
View Articleread ttl with NI9205can
Hello, I would like to read a TTL signal using a NI9205 ADC.I've tried different way but no success.I'm looking for tracks. Thank you
View ArticleRepeated running record and play from WaveIO gives error -5
Hello,we have a problem in LabVIEW. We use the library called WaveIO. The purpose of this part of the program is simultaneous generating and recording signal using a sound card. (We have tryed both...
View ArticleAccess Violation + VI failed to compile error
Recently, a project I've been working on crashes labview when opening, resulting in: Exception: Access violation (0xC0000005) at EIP=0x0000000140E6D53F Attached is the failure log and the offending...
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Export waveform without skipping a line
Hi everyone, I use the "Export waveforms to spreadsheet file" vi in order to... export some waveforms to a spreadsheet file ! I wired a "true" constant to "Append to file ?", and I noticed that it skip...
View Articlesearch and replace nivssdf file
Hello everybody, I can't achieve to make working my VI. It's suppose to get my nivssdf file, search the calculated channel section and replace by a texte writing in a constant block. I think the...
View ArticleMultiple Waveforms charts. LV gets slow over time.
Hello, I'm currently developing an application that captures data from four different channels of an A/D converter. This data is processed and different parameters are extracted: frequency, amplitude...
View ArticleCreate a linear relationship
Hello, I have a voltage input on my DAQ device from a volume sensor, and want to link this to the actual volume. Is there an easy way in which I can say that 0 Volt should be equal to a volume of 0...
View ArticleHow do I send Soft Key Commands Through GPIB to an • Agilent 8753D Network...
I need to automate a manual process on an Agilent 8753D Network Analyzer. Most of the actions are via the soft keys.The measuremnts are simple. Set marker to X MHz. measure markerI cant find...
View ArticleDaq assistant as input for formula
I need the output from my DAQ assistant to be the input in a formula node. But I can not do it since the terminals are different; dynamic data vs double [64-bit real (~15 digit precision)]. Is there a...
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FPGA
Hi All, I am trying to execute single pulse generation at very high frequency using NI 9401 on 9039 chasis. I am using Single timed loop and just passing a boolen on or off to the I/O in the STL based...
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Update wavechart dynamically
Hello, Here is modelisation of my real case.Here are key points:horizontal axis - variable iteration (integer) that increments in timevertical axis - 3 variables X, Y and Zthese variables aren't...
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[Bug ?] LV2015 SP1 : scrollbar of string constant
Setup :LV 15.0.1f1 (32-bit)W7 64-bitAutomatic Tool Selection = ON I have just noticed that, when trying to move the scrollbar of a string constant to change the visible text, the constant is moved on...
View ArticleModify parts of vi.lib. Specifically NI_MAPro.lvlib
I am working on an application that uses the Waveform with SGL Y_Value representation data type extensively. I have modified vi.lib/Waveform/WDTOps.llb by adding .vi's to the polymorphic .vi's in the...
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1800 rpm sensor using cRIO 9075, NI 8422 DI module, and prox sensor
For structural, mechanical, & controls engineering projects, contact me. Ryan Moore, PE, CLDryan.moore@aiken-engineering.comAiken Engineering CompanyOffice: 281-580-8468 This was more challenging...
View Articlelabview program working in highlight mode and not working in normal mode
Hi All, I would like to explain my program first, I wrote a program where trying to establish communication between Labview and microcontroller. By this program I am trying to select the serial com...
View ArticleProducer consumer - read sound input and handle user events
Hi,I am working on a project that will be using sound input as an oscilloscope. VI should read sound input continuously, wait for user actions on the front panel and react. For example the acquisition...
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