Here is the evenings work with a small copper wire used to short pin 4 to pin 2 per Mickle's suggestion. I installed the short, did the 'MODE, Test 0' then waited. Nothing much happened. 'TSTV0' appeared in the right hand of the display and the number of digits reduced to 6, if I recall correctly. It's late, I am on Interventional Call and just got back from being called in and I'm tired. I had to 'Initialize' to get back to the usual display and collected this data while I was out. I hope I did it correctly. Joe