rigol ds2072A

Thread Starter


Joined Aug 29, 2016
Hope someone can help me here. I have a Rigol DS 2072A and I noticed an issue on it that confused me. I was looking at a signal on it (Line AC from an outlet) When I set the vertical expansion to 100V. the signal looks ok but if I zoom in to 50V it resets to 100V after about 1/4 second. It doesn't zoom in like one would expect. If I select 20V it zooms off the screen as normal. Is that a malfunction on the scope or just a setting I missed.
Thanks for your input.