Write multiple waveforms in TDMS

Hi everyone,
Here is my problem, I have 5 waveforms with 3 y values each and I would like to write these 5 waveforms in a TDMS file.
But when I connect a simple waveform to the "TDMS write" function it's work, but when I connect mulitple waveforms, the wire is broken:"Polymorphic terminal cannot accept this data type".
Thank you for your help!

Can you post some code? When I try to wire an array of waveforms, the TDMS Write takes it just fine.
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Thanks so far,
I attached some examples of what I tried already.
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Hello all,
I am a 6th grade teacher and am taking a not so "Advanced Java Programming" class. Could someone please help me with the following problem.
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Enjoy! The length of the code is highly attributable to the test harness/shell thingy at the end. But anyway seems to work nicely.
import java.io.*;
/** File structure is as follows. 1st four bytes (int) with number of live records. Followed by records.
<p>Records are structured as follows<ul>
<li>Alive or dead - int
<li>Length of data - int
<li>Data
</ul>*/
public class SequentialAccessStringFile{
private static int ALIVE = 1;
private static int DEAD = 0;
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public SequentialAccessStringFile(String filename)throws IOException{
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/** Creates a SequentialAccessStringFile. If createnew is true then a new file is created or if it
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C:\>java SequentialAccessStringFile
Create a new file? y/n
(No assumes file exists)
yName of file
mystringsFile loaded. Type ? for help
add appleRecord added
add orangeRecord added
add cherryRecord added
add pineappleRecord added
list#       Value
0       apple
1       orange
2       cherry
3       pineapple
delete 5Record 5 does not exist
delete 1Record deleted
list#       Value
0       apple
1       cherry
2       pineapple
add kiwiRecord added
list#       Value
0       apple
1       cherry
2       pineapple
3       kiwi
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Display multiple waveforms on chart

I need help. I try to display multiple waveforms on a single chart. Two waveforms (Ideal PWM and Target Pressure) are made up of a single point instead of waveform or array; thus I have to build them into array. The problem is that I can display all the waveforms, but once awhile the chart shows a missing point on the waveform. I have attach a screen shot of my diagram. I'm using LV 8.6. Can anyone help? Thank you very much.
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Message Edited by DSI on 04-14-2008 11:46 AM
Attachments:
Display Waveforms.doc ‏163 KB

I would suggest creating an array based on the size of the other waveforms that are being graphed. Presumably you have a certain number of points for all the other waveforms, and they all have the same number of points for that iteration. Thus, create a Y array for the 2 values that you want to graph to be of the same size, rather than a single point. If you run the attached VI in highlight mode you can see what I mean.
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> I think your problem is that you're using something like Write to
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I'm using NI Modbus.llb, found on the NI site somewhere...
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Go to Solution.

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MB Serial Master Query Write Multiple Registers (poly) causes broken wire.docx ‏65 KB

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I am doing my thesis using Labview 2010(since it is only version avaliable in University currently ). I need to read and record data from microphone(currently using simulate signal since i need to make program work first) then save and analise it(didn't reach that point yet). I tried to use event structure so i can record and then read tdms file. But unfortunatly it records only small piece, then i inserted while loop so it will record continuosly but program doesnt respond after i push record and i can only close it manualy from toolbar. Please could anyone help me or suggest something since i am not very good at Labview and any feedback is welcome. Here is what i have done till now. I tried to search forums for some similar solution but could not find anything usefull(some had much newer version so i could not open). Thank you.
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Hi and welcome to the forums,
The reason you cannot stop the recording of the waveform or exit the application is because you have the event case configured to "lock panel until the case for this event completes" (in edit events). This means that LabVIEW will not respond to user interaction until that event structure completes but because you rely on being able to press the while loop stop button to finish the event structure means you have a deadlock and have to abort the VI.
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Saving FFT PSD waveform to TDMS file maintaining x-axis scale

Hi all,
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Solved!
Go to Solution.
Attachments:
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The problem apears to be with your array appendixing, and as you correctly guessed your shift registers. If you simply rearrange the components to look like:
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Multiple waveforms to spreadsheet

I am aquiring episodic data, say 2seconds at 20kHz then a 30 second interval and more data. I am saving this in a tdms file and all is fine.
I would now like to export these waveforms to a tab delimited spreadsheet, and I like the header etc that the cannede vi's offer. However when I set the append option to false, there is a new file for each waveform. When I set it to true, the next waveform gets appended at the bottom (same columns, new rows) instead of as new columns same rows. With the write array to spreadsheet, there is a transpose option. Is there something analogous for waveforms, or will I just have to use the write to spreadsheet and make my own headers etc?
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No offense was intended, the point is that if you focus on building the program all you will get is the program. However if you focus on building all the reusable bits you will get the program you need but you will also get a bunch of reusable code the will make your next program faster and easier.
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Certified Professional Instructor
Certified LabVIEW Architect
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"... after all, He's not a tame lion..."
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How to save multiple waveforms to excell spreadsheet

Hi Everyone,
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Attachments:
Read Voltage.vi ‏60 KB

Okay so the charts ended up working out nicely if I wanted to sample at 1kHz and have samples to read=100
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I guess my first question, would be what is happening that is making the VI crash right away, the DAQ board can handle 500KHz across all channels so that is not the issue, how can I create my VI to handle this amount of data?
Attachments:
Read Voltage.vi ‏94 KB

Write multiple waveforms in TDMS

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