Fellow Rigol owners, or experienced O-scopers for that matter,
I've been trying to zoom in on a 9-Volt battery signal's noise recently. No problem aquiring the signal (around 7.8 volts).
The problem I have is when I attempt zoom in on the DC signal, by using the vertical scale knob down to say 100mv/Div, I cannot re-center the 7.8 V signal on the screen as I have reached the scale limit.
Is there a way to reference the 7.8V signal on the center of the screen without the vertical scaler repositioning the signal?
I'll try to explain again later if I'm making myself unclear,
J