> Two minutes might be excessive, but you need some way > to verify each unit is being produced with the isolation promised. I just realized the OP said 2 seconds, not 2 minutes. 2 seconds sounds quite reasonable to me for the production test. What is the problem with this? ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist