labview 8.2

[R_J]

Hi all

In one of my applications , i have to acquire the data very fast (in some micro seconds).This can not be achieved by labview 8.0 (I guess i am right !!)

for this aplication i am using USB 8451(SPI)  card & high speed PCMCIA CAN

On this link http://www.ni.com/realtime/upgrade.htm i found that we can make our system to acts as a real time system.

Can this is also possible with laptop ??

Can i be able to use USB 8451 (SPI) and PCMCIA card.

Can i be able to acquire the data in micro seconds (~ 500 micro seconds)

Or can i go for Labview RT. But i does not wants to go for RT since it is not compatable with USB cards &also with PCMCIA.

Please reply as soon as possible.

Thanks & Regards

Raman J

[TiTou]

Hello,

There are many different question to concider and I don't have all the answers. Though I can tell you that RT or not depends on the operating system installed on your computer and Windows is definitely not a RT operating system. Also about RT, usually people think that RT is reserved for very fast applications and this is not necessarily true ; RT is the answer for systems that have to run continuously for a long time and at a constant rate, which can be low.

Also, for your application, DAQ boards have a memory buffer and a maximun acquisition frequency, so you can set up the board to aquire fast and then your LabVIEW application can read the boards buffer for instance every 100 or 200ms, you have to determine your frequency acquisition (1/500e-6 Hz >> 2000 Hz), then multiply by the number of channel and type of data to get the data flow and eventually see if it fits in the buffer.

I hope I am clear enough

Hope this helps 😉

BTW, I don't think that the LabVIEW version really matters... or maybe just about compatibility with USB devices, but technically even LV 6.1 would do the job.