On 12/5/19 6:13 PM, Glen Slick wrote: > > 7220C_7220T_OperatingAndProgrammingManual_07220-90003_229pages_Feb81.pdf > > http://www.hpmuseum.net/document.php?hwfile=1567 doh! Thanks. I'd been to that site already, but somehow managed to completely miss the 'documentation' link. That should do the trick, I'm sure :-) Jules