HP35660A DSA Calibration Time?

[geo_leeman]

Hey all,

I was able to score a HP35660A recently, which is great considering I work with seismic equipment! I haven't ever owned/used one of these before, but couldn't pass the opportunity.  I bought it "As-Is" and have been perusing the manuals.  My question is how long should the "Calibration in Progress" take? The unit boots up, passes all of its self-tests and the failure log is clean, but that message will stay up.  I've let it run over an hour or two with no change.  If you mess around in the menu system, eventually it will just stop responding and require rebooting.  Maybe this is going to turn into a repair.