power edge trigger for IQ acquisition with ni 5660 configuration

[seb_MDI]

hey,

I would like to do an IQ acquisition with a power edge trigger, I would like to know if it is possible with the PXI-5660 configuration (Labview 8.5).

I know there is a VI on RFSA "power IQ", is there a similar solution on ni5660 library?

I tried to implement the VI "analog edge trigger", I think it can be a solution for my acquisition, and I have this error :

"Invalid value for parameter or property. Analog triggering is only supported in normal acquisition mode."

I don't understand why. 

Someone can help me?

thanks in advance 

[Yardov]

Salut Seb_MDI,

You might find useful this thread I had with Guetteur. There is a shipping example that has already a burst detection VI that can help you debug yours.

I mention this since the PXI-5660 does not have power trigger build-in the hardware and therefore there is no NI5660 driver call for it. The PXI-5661 does have that capability and you would be able to use the NI-RFSA driver for that.

Analog trigger is not the same as power trigger. You basically want to fetch IQ data and perform a power detection (I^2 + Q^2) and based on the power, you will keep the values or drop them.

Let us know if you have more questions.