No. I checked the code and it does exactly the same as "Calib:AC gain" (long press mV) but displays "Gain calib mode" instead of "Exit" when you leave that mode.
Thank you.
I'm not going to update the cheat sheet because of this.
The cheat sheet is not necessarily comprehensive, but it serves to
- remember shortcuts for frequently used functions
- remember functions that only work with keyboard shortcuts.
And I'd like to keep it on one A4 page for printing, so there must be a good reason to change it.
what else can I add/change
As I said before, I don't know what you can do, but you could fix bugs, for example.
The DSO2512G is actually quite usable, but there is a problem in negative DC range.
Maybe this is already fixed in newer firmware, but have a look.
Try e.g. -3 Volt Offset DC.
On my device the grid position and the "mean" value do not match.
When the line on the grid is at -3 volts, the "mean" value shows e.g. -3.2 volts.
This looks like a software problem to me, otherwise both readings would be wrong to the same degree.