I had a DI-155 handy and hooked the count input to a Geiger Counter output. I set the channel setting to CPM.

Its not doing this correctly. It does not seem to be using a minute avg. If there are 3 counts super quickly together the count jumps way up. But if those counts are spaced by a few seconds each the count is way lower even tho they are during the same minute period.

If you give it 1 count per minute, it does not display this. The 1 count stays there for like 3 seconds and then goes back to 0..

Im trying to chart normal background radiation levels. These vary from like 14 counts per minute to like 30. Its very random when these counts come in.