Dear List, I have never used the a/d before and I want to use it to measure voltages. So far I have read chapter 19 of pic4620 and I think I know what to do now, but there are some things I would like to ask: what should I choose for the settings of Tosc , how do I use Table 19-1 ? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist