Hello,
I was making measurements of a system that I am building and I notice that I have two quite different results if I use the QA403 software or REW (via the ASIO drivers).
For the moment I do not understand the difference or where is the setting error.
Both included curves measure the same equipment. I just switch between the two softwares.
Has anyone already encountered this problem?
Regards,
Stef.
I was making measurements of a system that I am building and I notice that I have two quite different results if I use the QA403 software or REW (via the ASIO drivers).
For the moment I do not understand the difference or where is the setting error.
Both included curves measure the same equipment. I just switch between the two softwares.
Has anyone already encountered this problem?
Regards,
Stef.
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I don't have a QA403, but I was curious and after some Googling, I found this:
https://forum.quantasylum.com/t/thd-n-calculations-for-tones-less-than-100hz/1466
Apparently, you're not the first to experience this.
https://forum.quantasylum.com/t/thd-n-calculations-for-tones-less-than-100hz/1466
Apparently, you're not the first to experience this.
Interesting. I skimmed it. I'll read it again later.
So REW would hold the truth.
I've been suspecting errors for a few days now because I've been taking measurements centered on the 50Hz - 500Hz area and I've noticed differences but less obvious than when you go down to 20hz.
Thanks.
Stef.
So REW would hold the truth.
I've been suspecting errors for a few days now because I've been taking measurements centered on the 50Hz - 500Hz area and I've noticed differences but less obvious than when you go down to 20hz.
Thanks.
Stef.