William Bross wrote: > And yes, the test unit passed all the > hipot tests in the lab, it's just line testing every unit I've > challenged. So apparently this unit provides either isolation or insulation from the input power to something else. That sounds like a important spec that could have bad consequences when others rely on it but it fails. It seems to me that a quick hi-pot test on every unit in production makes sense. Two minutes might be excessive, but you need some way to verify each unit is being produced with the isolation promised. How do you otherwise propose to find accidental dirt or solder or whatever accross the isolation barrier? ******************************************************************** 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