Edge detection of a measured waveform
Hello, I am trying to detect the edges of a measured waveform. My ideas using peak detection or a threshold did not work. Attached you will find an example of a waveform. I try to find edges, marked...
View ArticleImages displayed in Labview do not stay synchronized across multiple frames
Hello, I'm a little new of a poster, but a long time lurker. I'd like to thank everyone that answers here for all of the questions that I have previously read and from which I have learned so much. I...
View ArticleVirtex-5 SX50T Resource Utilization Statistics Documents
At NI Week, I learned that there are fantastic documents on FPGA Resource Utilization Documents in this white paper:http://www.ni.com/white-paper/7727/en Is there a similar paper on the Virtex-5 SX50T...
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fft rms vs pk scaling
I have a program that is taking waveform data from an accelerometer. I eventually want the units in g's pk, but in the fft itself I get a cleaner signal by doing the RMS. It is the same thing taking...
View ArticleWhat can I do with an empty slots in cRIO?
What can I do with an empty slot? I have 2 empty slots on my cRIO. This may be completely aesthetic, but I'd like to fill them up with something, so my product doesn't have an "unfinished" look. Is...
View ArticleDAQ voltage inputs affecting each other and the device they're recording from
Hi everyone! I am using ELVIS II+ and LabVIEW 2012 to record voltage from a device with a resistive sensor (See Voltage measurement with ELVIS II.jpg for VI). The device (Device+ELVIS II Schematic.jpg)...
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value signaling property node not generating an event
I have an example program that uses a Property Node > Value(Signaling) to generate an event. The property looks like this: When I create a VI to do the same thing the Property Node looks...
View ArticleHow to pass a VISA resource to a SubVI using a cluster
I am coding a SubVI that controls several instruments using VISA, and requires too many inputs to connect them all individually on the subVI icon. I am trying to figure out how to pass clusters of...
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getting the highest peak
Hi everyone! I'd like to know how to choose the highest peak like from the graph. Can anyone show me how can this be done? Thanks!
View Article发布前面板到外网
目的：怎么发布LabVIEW程序的前面板，使外网客户端可以通过网页远程控制前面板？现状：我在LabVIEW的Web发布中进行了设置和发布，但是局域网的客户端才能看，外网的看不了，是什么原因啊，应该怎样解决这个问题呢？
View ArticleWhich 3rd party server should I use to host my labview VI from my PC
I have developed a Labview application, that I want to host from my PC. So that I can access it from other PC thorough internet.Now It can be accessed from the connect "remote panel" option in OPERATE...
View Articlehistogram ROI
Dear all,I am making a DAQ system for an Xray detector and I would like to include the functionality of on the fly calibration.For that I would like to be able to select a ROI from the histogram, fit...
View ArticleUse Command line switches in LabVIEW executable built with application builder
Does anybody know if it is possible to populate Controls in a top level vi in a built executable via the command line using command line switches?If this is not possible can command line switches be...
View ArticleI can't handle keithley 224 driver with labview. Help me, please.
Hi, my name is Kim Yonghyun. Iamstudyingphysicsat the university of seoul.I use Keithley 224 Current Source. Iwould like todeal withthe LabVIEWprogram (v2011) for the Keithley224. I try to use the...
View ArticleHelp with NI-DAQ Example Code
Hi. I've just started working with the NI ISB-6211. This is the first ACD i've ever used, so i'm farily new to this. I have quite a bit of knowledge in programming. After searching through the...
View ArticleEnable user to change channels belonging to a task
Hi to all, I want to create a SubVI which enables the user to configure channels for a task. When the user finished adding channels to the task, the task should be returned to my main VI. I attached an...
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Synchronise Analogue IO on DAQ
I'm writing a piece of code to use an NI USB-6251 DAQ to measure speed of sound in water. To do this I'm sending a burst of say 4 or 5 cycles of a sinewave out on one of the analogue outputs of the...
View ArticlePCIe-7851R
hi, I am working on PCIe-7851R, my problem is i do not get the control and function pallete when i open a VI on my FPGA target. It works fine when i open a normal VI. can anyone help please...?
View ArticleFFT from XY array
Hi, i cant handle with FFT from 2d array. I am converting data from excel. In labview it is a 2 columns with 10000 rows array. Then i am plotting XY graph from this array(using 'build XY graph') and it...
View ArticleChannel Name after passing express vi
Hello, I'm sending my dynamic data through the express vi (statistic calculation) to get the RMS value.After the calculation I get my RMS value for each channel but the channel names are missing. Is...
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