Something's off with trigger, setting it to channel A when both channels generators run at different frequency should make the second channel waveform "float" a

Something's off with trigger, setting it to channel A when both channels generators run at different frequency should make the second channel waveform "float" as it is unsynchronized. Normally those 2 channel scopes have per-channel trigger source Here is how mine looks: https://i.imgur.com/TunVxDm.jpg https://i.imgur.com/TunVxDm.jpg