Assigning a name when using LVM Format

[Thomas L.]

Hi

I am currently developing an application, which reads 9 Traces from an Agilent Spectrum Analyzer.

I am using the TDM File Format for a machine-readable format and the LVM Format (Write to Measurement File Express VI) for a human readable output  possibility. Now when I view the LVM format, I can find the lines:

---snip---
X0    0.0000000000000000E+0    0.0000000000000000E+0    0.0000000000000000E+0    0.0000000000000000E+0    0.0000000000000000E+0    0.0000000000000000E+0    0.0000000000000000E+0    0.0000000000000000E+0    0.0000000000000000E+0   
Delta_X    2.493766E+7    2.493766E+7    2.493766E+7    2.493766E+7    2.493766E+7    2.493766E+7    2.493766E+7    2.493766E+7    2.493766E+7   
***End_of_Header***                                       
X_Value    Untitled    Untitled 1    Untitled 2    Untitled 3    Untitled 4    Untitled 5    Untitled 6    Untitled 7    Untitled 8    Comment
0.000000    -65.739000    -14.069000    -72.392000    -65.183000    -14.069000    -72.392000    -64.011000    -14.069000    -72.392000
2.493766E+7    -64.526000    -57.759000    -75.090000    -68.186000    -57.759000    -75.090000    -65.462000    -57.759000    -75.090000
---snip---

Now I would like to give the traces a name, instead of them being called Untitled. How would I do that?

[DavidJCrawford]

Hi Thomas

You can use Set Waveform Attribute where you can set Name string equal to NI_ChannelName which in turn is recognised by the Convert to DDT function.

Like this

David

Message Edited by David Crawford on 09-07-2006 10:07 AM

[Thomas L.]

Thank you, works perfectly - exactely what I've been looking for 🙂

[edmiles55]

This is close but the number of channels being measure will end up changing and I would like a way to do this same thing but keep all the data in dynamic format so that minimal adjustments have to be made as the number of channels changes.

[DavidJCrawford]

Response to edmiles55 in this thread.

http://forums.ni.com/ni/board/message?board.id=170&message.id=205035