>I would like to measure the amplitude of a signal (actually only the top >half :-). Does anyone have any suggestions or pointers, I'll be using >the 16F877 ICD as the proto and hope to move over to the 12C67x later. >The frequency is only 120KHz. Well then, anytime the processor isn't busy just grab signal samples off the A/D converter. Record the highest reading you get after grabbing some number of samples...that's the + amplitude, assuming it was a real signal you were reading. Barry -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads