Use a signal generator. Put the reference frequency on Channel 1 (X). Put the test frequency on Channel 2 (Y). Slowly adjust the test frequency knob. Watch as the circle "folds" into a complex flower. When the pattern stabilizes and stops "rolling," your frequencies are matched.

This mechanic allows you to multiply your gains by completing specific color-coded challenges (Red, Blue, and RB interferences). Top Strategies for Progression