REW issues - popping, static in frequency sweep output.

@macg19 

I think you have successfully isolated the issue to your external USB microphone.

Are you running Windows or another operating system on your personal computer?  I know you listed it as WIN 10 Pro ... just checking.

Do you know what other devices are connected to your USB root?  It does not matter where you plug devices in, in the end, there is only one root.

My understanding is that your USB driver will be polling every attached device anywhere in the USB tree, that is every USB device on your computer.  That could possibly be interfering with the USB microphone input?  And if there are known problems with the Java USB driver you are using, that's where I'd concentrate

@richardbrand thanks Richard

Def Windows, no other USB devices connected.

Try installing the ASIO drivers. Search for ASIO4ALL.

What does REW stand for?

@mahler123 REW:  A room equalization wizard that generates and measures a frequency sweep or pink noise signal for determining required room correction. 
 

@macg19:  From the data,  seems like you successfully isolated the problem to the mike or mic-computer interface.  I am still focused on clipping due to overloading an output-input interface, a bad wire or connection, or simply a bad mic since all of @richardbrand ​​​​and @jpag excellent recommendations did not isolate root cause.  I am sure you did, but I will ask anyway … did you calibrate the mic according to the REW OEM’s instructions?  Did you contact the REW OEM for recommendations?  I will now bow to the others here more knowledgeable on computer interfaces    Good luck.