James,

I ran your test by Manually setting to 600 VAC and it measured just fine. Then I tested again but first set the range to 60V in Auto. It also worked just fine. For some reason, I cannot reproduce the problem today.

The only difference is the source voltage I am measuring today. Today I am looking at 480 VAC (at my customer’s location). Previously, I was looking at 460 VAC at my office.

I will try again at the office when I can, probably tomorrow. I verified the actual voltage is 460 at the office with another meter. I will also try again today as time permits.

Thanks,
Jim