How do I use 6024E clock to time DIO events ?

[Stellate]

I am a LabVIEW beginner and want to have a go at using my 6024E DAQ for event timing rather than LabVIEW timing functions. I have set myself a simple reaction timer task, ms accuracy, random LabVIEW start trigger, D/input user response. Any information on utilising the DAQ for timing would be much appreciated.

[aasenjo]

Stellate,

The 6024E's digital port is a static I/O digital port and can only be used programmatically (read/write to software calls). This in mentioned in the specs for the board in the catalog (page 269 pf the 2002 catalog), I provide a link for your convenience:

http://www.ni.com/pdf/products/us/2mhw249-250e.pdf
(or go to www.ni.com -> Products -> Search for: 6024)

This means that the board is not capable of performing hardware timed DIO operations. All DIO operations have to be performed through software calls and are therefore limited by the system's speed and timing accuracy.

The type of task you mention: "reaction timer task, ms accuracy, random LabVIEW start trigger, D/input" is more suited for one of our high speed digital boards like the PCI DI
O-32HS (part of the 653X family).

For more information on the 653X family you can take a look at our catalog (page 332 of the 2002 catalog) by going to:

www.ni.com -> Products & Services -> Search for: 6534.

You can also access the 653X User Manual by going to:

www.ni.com -> Support -> Search for: +6534 +user +manual

Let me know if you have any questions about the High Speed DIO boards or if you require pricing information.

I hope this helps.

Alejandro Asenjo
Applications Engineering
National Instruments