LabView

Different results in DAQ Assistant and generated code
I am programming a PCI 6251 using LabView 8.5 to measure the voltage across a voltage divider. The board and circuit are connected via a BNC-2090. If the measurement is made using DAQ Assistant, the correct voltages are measured. If the DAQ Assistant is converted to code, the voltages measured are not correct. The prog... 7 May 2008 15:04

How to activate another worksheet in excel file and write data intoit
Hi,   I am writing an automation program to collect test data and write the data to an excel file. The excel file has several worksheets and now I can only write data to one sheet. Can anyone please let me know how to activate another worksheet and write data into it? Thank you very much. ... 6 May 2008 23:25

How can I extract data from array of strings?
I tried to look for a solution to this but I haven't got any yet, I just started labview and I am trying to do a simple data extraction ui.   Basically if i have an array of strings, i'd like to filter out specific items from it using pattern matching then dump it to another array.   I tried with a simpl... 7 May 2008 01:09

Xantrex XDL 35-5P
Using LabView 8.5(eval) with Xantrex XDL 35-5P I am getting error code "-1074135040" "Driver Status: (Hex 0xBFFFA0000) at the inialize.vi and I don't know what is wrong.   In NI-MAX I see the power supply and I am able to send it commands using GPIB code. I am using a GPIB-USB-HS card. I have downloaded the most... 6 May 2008 23:25

Import Data Into Zoom FFT VI
Im trying to import a text file with 100x2048 data on a sine wave...Frequency = 1kHzSampling Frequency = 25kHz (df = .00004)Amplitude = 1VSamples = 2048.. into a modified version of the "SVXMPL_Zoom FFT (Simulated).vi". The program keeps outputing zero for magnitude and phase. sine.txt: http://forums.ni.com/attac... 6 May 2008 23:25

analog comparison/start trigger
Hi Michael, I was able to implement the analog triggering using a dummy AO task. Once I can clean it up a bit, I'll post a small example of it.  I would recommend giving that a try and seeing if it works for you.  Another option would to create a software "alarm" that sets a digital line level based on the an... 6 May 2008 23:25

Passing array to call library function running on VxWorks(cRIO)
I guess I have solved the problem. The key was to set the parameter "Minimum size" for all function parameters to <None>.Having this, I can read the passed arrays. I do not know why this works but at the moment, it is ok for me.Thank you all. ... 6 May 2008 23:25

Create, Read from Excel Template
I'm trying to add to an existing program that uses the Microsoft Tool-kit vi's to export data to an Excel template where various other calculations are carried out.  Now I would like to read fromt the same spreadsheet to do more calculations.  I'm having trouble linking the path of the template just created t... 6 May 2008 23:25

adding Y_Unit_Label to an lvm file
For anyone else who might want to know, you can actually write units on the Y axis label with the "Write to Measurement" Express VI.  If you convert your signal to a waveform with the "Build Waveform" block, you can then use the "Set Waveform Attribute" block to name your signals and set the units.  Just ente... 7 May 2008 14:14

Fieldpoint examples
I?m looking for example programs that show how to read a Fieldpoint from CVI. The online instructions say that they are installed on my disk.   I tried reinstalling LabView and it said that the example files are already installed.   So I know I have them. If you can just tell me the na... 6 May 2008 23:25