to store

[kausi]

How to store chart waveform acquired by analog DAQ card in labview?

my waveform acquired by DAQ card is varied at perticular interval of time,so i need to store each waveform i got as it is fully. for that what should i do in labview? please help me.

[GerdW]

Hi kausi,

to store data you should use some function from the File functions palette!

Depending on your requirements you can store the data in binary files, text files, spreadsheet files, TDMS files, ...

[kausi]

thank you sir,

eventhough by these file functions datas only can stored.

how to store waveform as it is i got every time?

[GerdW]

Hi kausi,

in the waveform functions palette you will find functions to store waveforms...

[kausi]

cant get it clearly,

if you dont mind, can you explain it with example?

i am using analog input 9205 NI DAQ card . i am acquiring our radial artery pulse singal by using pressure sensor (strain gauge based).

thank you.

[GerdW]

Hi kausi,

a simple example:

[kausi]

sir, i used "write to measurement file".it is very easy to store my waveform data in xcell.

and "read from measurement file" used to display the same data as a waveform.

but the problem is : (see attachment)when i do it in while loop it asks me "file name" to store datas for each total number of samples.

its not fair... i need the full data when i stop the loop in one file name.. what will be the solution for this? 

thank you .

[GerdW]

Hi kausi,

the solution is to read the help for each function you use and (after doing so) wiring all needed inputs of those functions...

Maybe you should provide a filename/-path?

[kausi]

sir, while i am reading data from one file by "read from measurement file", it reads some and said error as

"

"

i dont understand what is the error in there!

if i continue the reading ,finally it reads only some part of the data alone....

help me to rectify this sir

thank you.

[kausi]

sir, while i am reading data from one file by "read from measurement file", it reads some and said error as

"

Error 100 occurred at read from measurement

file-->read waveform.vi 

Possible reasons(s):

LabVIEW : file contains erroneous data.this normally is a user

data file.

"

i dont understand what is the error in there!

if i continue the reading ,finally it reads only some part of the data alone....

help me to rectify this sir

thank you.