How to use PXIe-5645 to read I/Q data

[EmmaWeng]

Hi all,

I'd like to use PXIe-5645 receiver to read I/Q data. If it's possible to read the phase of I/Q signal directly, that would be the best. Otherwise I would use I/Q calculate the phase(tan(phase) = Q/I).

For now I only have access to the basic RFSA soft front panel installed. Do I need any specific license to read I/Q?

Thank you!

[santo_13 · Accepted solution]

I believe you have LabVIEW, in that case, you can use the example finder and use the examples related to I/Q to capture the I/Q data. Looks like you would need to compute the phase yourself (use the arctangent function on the IQ data and convert radians to deg)

[EmmaWeng]

Thank you for the reply.

My LabVIEW trial license has just expired. Is there a way to read I/Q data without using LabVIEW, for example a SCPI command? 

[santo_13]

You can use the same examples in C#.NET or Python to collect the I/Q data.

Unfortunately, I don't think there is a way for you to gather the I/Q data without programming software and using the RFSA driver.

Side note - PXI instruments do not use SCPI but proprietary drivers or IVI drivers. SCPI commands are text-based commands primarily for GPIB/Serial instruments.

[EmmaWeng]

I see, thanks.

I think I still need LabVIEW anyway.