Robski wrote:Usually you get -100 to +400V iirc, i duplicated the probe & added my own V scales so they went higher.
You can also select the X20 probe, still using the attenuator .
I think I've got it. The input range that was selected with the 20:1 attenuator was not the full extent of what could be used. I duplicated the probe for 20:1 and went through editing it. I noticed the range that was allowed as you have said is -100 to +400v . Where did you make the changes to the scaling? I was more worried about damaging the scope than anything else but now that I see the true range I see that it should be ok. I don't like seeing the scope saying out of range. Makes me very nervous.
And what is "iirc"?