how to find harmonics from a data
hi, can anyone guide me on how to convert the data to fft. the reason i use fft is to find the harmonics in the data as the data represents leakage current from a surge arrestor. i need to find...
View Articlefile read
Hi, I need to transfer text file from one PC to another PC using RS232 cable. I designed the block using VISA and I am stucked with FILE READ. Kindly help me to fix this issue.
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cRIO-9074
Hi all, I received a NI cRIO 9074 and connected it with my laptop through direct ethernet connection. I am able to see the device in MAX and i formatted the disk according to the instructions on the...
View Articleis it any way to show the number of elements of array before run?
Hi there, In runtime, I can use the array size function to check the number of elements in an array.But is it any way to show the size of array in edit mode (i.e. before turn the vi)? Thanks.
View ArticleHow delete last bit (LSB)
I have array with bits in each row and in one column. Now I ned to delete LSB (parity bit) and then assemble all 7 bits back together and split them in parts by 8 bits. My idea was to put bits in...
View ArticleUnit label keeps changing position after reopening project/build?
Hi, I have a control on my front panel and it has units associated with it. The units are under the control and centered. But when I close my project or build it the units move to the right side of the...
View ArticleRetain data in String Display untill new data is delivered in RS-232
I am using Labview 8.6 on Windows XP OS and acquiring signal from RS-232 through COM1 port to which I have connected non NI instrument. My instrument sends data for flash of second and it displayed...
View Articlebuild array
I would like to build an array without including any information that has been set to 0. For example the numbers: 25,13,63,42,0,8,2 would be an array such as this:2513634282 If I use the classic build...
View ArticleLVOOP %27owning library blocked execution....%27
Hi All I am working on a project using LabVIEW 8.5.1 (specfied by the customer not me!) and am having trouble with some LabVIEW classesI have created. I have created three classes - a parent class is a...
View ArticleFlatten to XML error
I'm having an odd error with the Flattent to XML function. I am using it to save a settings type definition for a data acquisition VI I made. It works beautifully almost all the time until now. I...
View Articlepid - transfer function - funzione di trasferimento - coefficienti PID
Salve, sto progettando un sistema di regolazione di una camera climatica e vorrei fare uso dei PID. In seguito ad una ricerca effettuata in letteratura, ho trovato un equazione differenziale che...
View ArticleWait for queue element and then flush queue
I'm working with a producer consumer design to read data off a DAQ and then process in a separate loop (number crunch, update plots, write results to file). The data acquisition rate can be highly...
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how to connect external inputs into cluster elements?
Hi all, I have a subvi have a cluster embeded I want to control the "enable" element from outside but I cannot wire the input terminal on the icron to the enable element. So how can I control the...
View ArticleEnvironment fonts keep changing back to default
In order for my UIs to look good on all my deployed systems (usually windows xp or 7) I change all the environmental fonts (Tools>Options>Environmental>Fonts) to Tahoma (and, of course, set...
View Articlewebpager
I'm trying to use the webpager,but it dosen't work.Who can help me? Thank you!
View Articlegenerate sine waves of frequencies ranging from 0.1Hz to 1KHz using RT
Is it possible to generate sine waves of frequencies ranging from 0.1Hz to 1KHz using RT. I m using cRIO 9025, and 9263 AO module.I tried it but i am not getting a smoother sine wave.
View Articlewill the change of type def. be updated to all connected controls?
Hi all, I am creating a type def. on a cluster in which numeric, string, array and error in/out will be contained. I save it as type def. (*.ctl). I drag the *.ctl file to a new VI which will create a...
View ArticleAny way to limit the input format for string control?
Hi there, I need a control for the user to input some string with only alphabets and no special characters. Also need to control the number of characters to input. I search it and see someone use...
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Here are 40000 points (x,y) on the wafer, how to arrange them into the right...
Hello all friends, I want to arrange all these phisical points into a logical map, but how many rows and column are not known in advance, we just know:1. seperation can be given, for example...
View Articlewhat does the IMAQ Cast Image VI do exactly?
Hi everyone, I want to convert a RGB image to grayscale. By now I can do this, using the IMAQ Cast Image VI. But now I was wondering what exacly does this VI do? How does it make a grayscale image from...
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