12-17-2015 03:03 AM
Good morning,
I am currently struggling with a small programm that should send a burst (this VI has been created and checked) to a transducer and the signal should be acquired then by a sensor that is linked to the digitizer. I am thus using an AWG slot, a digitizer slot (PXI 5122) and also the amplifier slot.
In order to have in the end a program as simple and compact as possible, I have used the express VI niFgen and niScope for the devices I am using.
The problem concerns I think the synchronization of the devices regardeing the trigger. How to proceed with those express VI ? I have looked for answers and I have not found anything.
Is there any possibility with those express VI to do it or do I have to proceed the "long" way with the normal niFgen VI and niScope successions?
I thought it would be a problem of clocks, but I must admit I can't figure out which clock to use between all the one that are suggested to me (reference clock, sample clock, internal, external, TClk, onboard clock, PXI clock, RSTI...).
What should I do ?
Thank you in advance,
Alexlelion
12-17-2015 08:21 AM
Configure the AWG to send a trigger (I did it by using a marker) on a trigger line. Use the same triggerline for the scopecard as a digital trigger. Set both cards to use the 10MHz PXI clock.
after configuration of the cards do a TClck-sync (see examples for FGen, Scope and TClck)
Don't know if you can use the express vi's for this..... never used them... the examples will show you how to use the advanced vi's to get the task done.
01-06-2016 08:09 AM
Thanks for your answer.
I have tried new things based on your ideas, but i didn't quite understand what you meant by marker (for the trigger)..