06-04-2012 08:44 AM
Been playing around with the Sound and Vibration Assistant - but have come up against what appears to be a huge wall. Once I've taken data, the SV Assistant does not allow me to do much of anything else. I've come up against the following errors:
"Not enought memory to complete this operation"
"Labview: Memory is Full"
which then leads to:
"File I/O error - An error occured while reading from the file..."
because when the memory error occurs, the SV Assistant freezes, and then corrupts the project file.
Am I missing something here? Seems that this product is not meeting the standard I expect from NI.
06-04-2012 09:02 AM
What's the size of the file you're loading?
I've never used S&V Assistant, but (like you apparently) I expect serious work from NI so given the error message you're reporting, I assume you're doing some extreme use of data.
We have two ears and one mouth so that we can listen twice as much as we speak.
Epictetus
06-04-2012 09:07 AM
The file was recorded using the SV Assistant into a LOG file. The measurement is a typical NVH style measurement, consisting of a 60s runup. Data is being sampled at 50khz.
06-04-2012 09:42 AM
3M samples... What datatype is it? I mean how many bytes per sample? And how many channels?
If you have more than one channel and to try to graph this, it could be a little big...
We have two ears and one mouth so that we can listen twice as much as we speak.
Epictetus
06-04-2012 09:46 AM
That shouldn't matter. I've taken similar data with other specialized NVH Software (HEADAcoustics) that samples at 48k, two ears and a tacho without issue, for even longer ramps (90s).
It appears that for whatever reason, NI is reading this all into RAM - I thought that was the purpose of the LOG file. Write data to a file, and work with it from there.
06-04-2012 09:54 AM - edited 06-04-2012 09:57 AM
Hmmm I understand your frustration... I dont' use S&V Assistant so I don't know if it tries to load the whole set of data, I don't know either is there is a way to split the LOG file into pieces or to tell S&V Assitant to load only a part of it.
Sorry I can't help more than this.
We have two ears and one mouth so that we can listen twice as much as we speak.
Epictetus