05-08-2012 09:38 AM
Hello,
i am new with labview. I have to create a measurement system for ADCs. As the Input for Testing we will use the PXI 4461 with two analog outputs.
I add the module as simulated device with the measurement and automation explorer. Now is my question how i can create a 90 degree frequency offset to realize a fully differentiel input signal on two channels?
I am thankful for help
05-09-2012 04:58 AM
Hello LTE_Jung,
there is no possibility of changing the frequency that simulated devices return.
So you will have to implement the phase shift you need in your Program.
You can do that by buffering the values of one channel and delay the Output.
Or you can entirely replace the driver VIs with Simulate Signal Express VIs
Best Regards!
Moritz M.
05-11-2012 03:39 AM
So as i understand i have to wait until hardware is delivered. There is no possibility that the DAQmx and the DAQ Assistant is used with similar behaviour?
05-11-2012 04:53 AM
Since you can not change the Signals that Simulated Devices delvier to your Programm you wont be able to use DAQ Assistant for this Purpose.
I suggest using the Simulate Signal Express VI. You can configure this VI to simulate Aquisition Timing as well. If you recieve your hardware you can simply replace the Simulate Signal with DAQ Assistant.
Best Regards!
Moritz M.