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Hello,
When using the latest API version (the 11/06/18 release). I am getting the error “access violation at address 0x0000000000000000” when using the DIRECT_RF or STREAM_IF flags. I am testing these options by modifying the example python code, and the only change that I am making is this flag.
Can I get some guidance as to how to get this working?
Best,
Nolan Luckett
Nolan,
The STREAM_IF flag has been deprecated and the DIRECT_RF flag has been superseded by our IQ streaming functionality. Both flags were from a time when we didn’t have IQ streaming functionality across the full operating frequency of the BB60C. Is IQ streaming adequate for your application? I do not believe we have any examples or documentation on the older two flags right now.
Regards,
AndrewNolan,
The short answer is that the IF to I/Q data transition is a frequency shift to exactly match your requested center frequency, and amplitude corrections to remove ripple in the IF response. The I/Q data is typically easier to work with than the raw IF data, as phase information is a simple atan2 function, and power is simply I*I+Q*Q.
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