Hi Andrew,

Thanks for the reply. That’s more clear for me. So if I use the IQ recorder, it will set to 16 bits for IQ data for default, and I have to do the transform and correction(based on the documentation) :

1. The correction value can only be acquired through API or there’s a table for finding it? I’ve tested that it seems only relate to the the reference level set, is that correct?

2. I’m always confused about what is the unit for acquired raw data(there’s different setting in api) for either IQ recorder or bbGetIQ api? Is is the voltage or power? mV or dbm or else?

Thanks,
Jing

Hello Andrew,

Thanks for all the reply. I’ve tested those solutions you suggested, and have some following questions :

1. In interference hunting mode, I can collect event with 0 duration and 0 bandwidth. I’m guessing the 0 duration is due to rounding or truncating, but what does 0 bandwidth means and what is the precision for duration and bandwidth?

2. I would like to capture all small duration event so it seems capturing IQ and do post processing is what I should do. What’s the difference between using IQ recorder and write my own code with API?

For IQ recorder : I still need to verify it’s correctness since a 40M/s sample rate has rate 150.94 MB/s so that means there’s still a loss(theoretically should be 160MB/s)?
And also, the api shows that the IQ data is stored in 32 float but the IQ recorder is recording 16 bits(and normally the recording device in the past is storing in 16 bits so I’m a little confused)

For API : I’ve tested to acquire by using bbGetIQ() function, what is the mechanism for BB60C to update the buffer? I call the function several times and it actually get all the data from the buffer out. How do I get the next data without making a gap? Do you suggest anyone that can answer the question for bb_API?

Many thanks.
Jing

Hi Andrew,

Thanks for replying. So in the interference hunting mode, it only capture one snapshot per sweep time?(Or there’s still some other processing time after each sweep) If that’s the case, how do we know the sweep time?(Or how do we know what’s the gap for missing event. For now it seems that it miss a lot of them)

Another question is that did the FFT process done in software or in the BB60C device internally?

Thanks,
Jing

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