High speed continuous acquisition using cRIO and LV8 with shared variables ?

[mikaels]

Hi,

We have recently purchased a cRIO system. I am wondering if there are any updated examples like in the link below, but for Labview 8? The link below seems to be for LV7.1.

http://zone.ni.com/devzone/conceptd.nsf/webmain/8E999A74E43AC76186256F5E0068CFAC

Anyway,

I am trying to do exactly what the above example does, only I am using Labview 8 and would like to know if there are any advantages in using shared variables for this purpose and/or if someone knows of any examples on how to do this?

I would like to use 4 analog input channels on a 9201 C-series module with our cRIO. I would like to sample each of the four channels at 80kHz or more. Is this possible? I need to log the data to a text file. With the code I have written myself, some of the data gets lost somehow and I can't figure out what's wrong..

Any help would be appreciated!

Best regards,

Mikael Skogsberg

Ph. D Student

Chalmers University of Technology

Sweden

[Jimmie_A.]

Hello!

Please look at these examples/tutorials that is written for LabVIEW 8, FPGA, RT and contains shared variables.

High Speed 32-Channel Binary Data Logging with DMA Data Transfers, NI 9205 Module
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=0F39A55720C643D0E0440003BA7CCD71&p_...

Using DMA FIFO to Develop High-Speed Data Acquistion Applications for Reconfigurable I/O Devices
http://zone.ni.com/devzone/conceptd.nsf/webmain/0B5FF8ED662652EE8625708C00548ED8