simultaneously generate and acquire waveform in labwindows/cvi?

[razzimia]

I Have to generate a waveform from an AO channel an simultaneously acquire another wavefom from an ai channel.I'm using a pci-mio 16E-1. What have I to do?

[RobertoBozzolo]

I never tried such an application in CVI, but having used it in LabVIEW I can suggest you a workoround based on LV applications.

You could try with this steps:
1. Configure AI acquisition as desired
2. Configure WFM generation as desired
3. Set output start trigger as AI start trigger using Select_Signal function:
Select_Signal (1, ND_OUT_START_TRIGGER, ND_IN_START_TRIGGER, ND_DONT_CARE);
4. Start AI acquisition: this should start WFM generation as well

For an example on how to use Select_Signal look at WFMsingleBufExtTrig_Eseries.prj example shipped with CVI.

Roberto

[aperez]

Razzimia,

You might want to check out these National Instrument documents that explain simultaneous AI/AO and some synchronization techniques for implementation:

"Advanced Synchronization Techniques for Data Acquisition"
http://zone.ni.com/devzone/conceptd.nsf/2d17d611efb58b22862567a9006ffe76/ced34fe76e435edb8625686b006d9b56?OpenDocument

"Simultaneous Analog Input and Output"
http://zone.ni.com/devzone/conceptd.nsf/webmain/E1060C842FB4FB6D86256802007B90C8?OpenDocument