need help

[muskan]

hello to everyone...

i am facing difficulty in using an icon named as 'wave form to spreadsheet' (labview>>version 8.5>>biomedical application>>datalogging>>waveform>>exprt waveform to spreadsheet)..  i want to export my sine wave to (spreadsheet) that is excel sheet to extract point to point value..

can anyone help me out...

waiting for co operation...

regards.

[DFGray]

What sort of problem are you having?  Do you get no file?  Do you get a file but Excel will not read it? Are you getting errors?  Please be more specific so we can help.

Note that a spreadsheet file is usually a tab-separated text file, not an Excel binary file.  You will need to import the file into Excel using the text import wizard.  It may not even show up on the Excel file dialog, if you are looking for an .xls or .xlsx file.  You will need to look for all files or files with the proper extension (usually .txt or .log).

[Coq_Rouge]

Why do you need Excel for this task, then you can do it Labview.

Post your code and perhaps we can assist you.

[muskan]

hi... m workoing with lab view... as a1 complete sine wave start from zero cuts the zero and then ends on zero....

i have to take the values of sine wavefrom starting of sinewave till it again cuts the zero... is it possible??? how???

[muskan]

help me as soon as possible plz

[Newton_de_Faria]

muskan,

Zero crossing is a common technique and can be implemented with many different levels of refinement. It depends on the nature of your signal (baseline drifts and noise at the crossing would be some of the complicated factors.

LabVIEW has a simple function under the NI_PtbyPt  library named Zero Crossing ptByPt. You can always add refinement to it.

Another more elaborated solution is given under the Control Design and Simulation Module - SimEx detect zero crossing

[Coq_Rouge]

What arte you trying to do. Are you trying to make continuous sinewave generator?  Remember good questions draw good answers. So what have you done so far and why and how are you struggle. I also think this questions perhaps are better of in the Labview forum here. http://forums.ni.com/t5/LabVIEW/bd-p/170

[muskan]

i have to take the values of PRinterval, because i've to compare it with the other wave...

now tell me how can i take these values? should i use the array and loops? how????????

[Coq_Rouge]

You are in luck. Go to help in the toolbar, select Find Examples. Search for peak. Open the example named "Peak Detection and Display.vi" That VI will give you a push in the correct direction. Also stay away from using Express VIs in your project. Express VIs is just some flimflam that NI has glued ontop on Labview, using very cheap glue. Express VIs do always cause problems than they do good