I've been using Lab Windows for about 17 years now. For the most part I communicate with measurement instruments via GPIB, I've written a GPIB module that uses asynchronous call backs and speaks to a multitude of instruments. Still, once in a while, a glitch occurs on a long test and communications fail. I'd like to write some routines to correct errors. I'm sure GPIB has many more capabilities than what I'm using. Is there a place where I can really learn everything there is to know about GPIB?