Some real problems with REW and my equipment

[German]

Hello, I'm very very sorry for having no time to read all the threads and search for my problem! I have to do important measurements tomorrow evening.
My equipment:
Superlux ECM-999 mic
Focusrite Solo 2 Gen
REW 5.19 on Lenovo ThinkPad L420.

The mic is working, checked in Audacity (recorded my voice) but after 2 years of perfect working I'm getting very strange graphics after the measurement:

https://cloud.mail.ru/public/3CEZ/6nwvSqgQJ (very sorry for this kind of link)

The SPL Meter is constantly showing 50 dB (even when I'm screaming in the mic)

This is nothing near my real frequency response... And earlier I had different kind of graphics in REW 5.17 with 50-150-150 Hz peaks. Looks like some AC/DC frequency problem. Maybe someone encountered these problems somehow? Should I change my equipment? I've reinstalled REW already.

Sorry for possible mistakes, English not my native.

 

[John Mulcahy]

Please attach an image of your REW soundcard settings and an mdat file of a measurement showing the problem.

 

[German]

Hello, John! First of all I'd like to thank you very much for developing such a great software!

Here's link to my measurements with this strange problem:
https://cloud.mail.ru/public/CEV6/Rqs4w4RyG

Here's my settings:

https://ibb.co/BjNFX4M

It seems for now that I've managed to overcome this problem with just changing Default Input to Left from Right... I never knew it could really matter! At least for now I'm getting correct measurements of my system. But I noticed one more thing: I should always plug in my soundcard before I turn on the computer otherwise there are same problems with 50/100/150 Hz peaks... It's really strange

 

[John Mulcahy]

The mic input on the Solo is the left channel (channel 1) so you need to select that if you want the input from the mic, otherwise you are seeing the line input. What you were seeing in the measurement looks like crosstalk on the line input. It is better to select a named input (and output) in the soundcard settings if that is available rather than leave them as Default, defaults can change.

 

[German]

Thanks for explaining, John!