Newbie questions

Good Morning
First post so be gentle , I am slowly trying to learn about electronics and adequate measurements. I bought Pro version while ago mainly to help me with turntable and cartridge setup but I’d like to learn bit more about , so far I have used built in measurements but I bought function generator and oscilloscope. I’m trying to check frequency response but the best I can do is spot frequency check. I’ve tried built in frequency response measurements using linear sine sweep of 300sec from external generator but results are way off my spot test , any way for a step by step instruction how to set it up , I’d like to run frequency response test in the typical 20-30kHz range using external generator .
Probably quite trivial but I got stuck on this
First post so be gentle , I am slowly trying to learn about electronics and adequate measurements. I bought Pro version while ago mainly to help me with turntable and cartridge setup but I’d like to learn bit more about , so far I have used built in measurements but I bought function generator and oscilloscope. I’m trying to check frequency response but the best I can do is spot frequency check. I’ve tried built in frequency response measurements using linear sine sweep of 300sec from external generator but results are way off my spot test , any way for a step by step instruction how to set it up , I’d like to run frequency response test in the typical 20-30kHz range using external generator .
Probably quite trivial but I got stuck on this