From what I remember from the years I worked on the 5071A is that the prognosis for CBT's in long term storage is very poor. The Navy had to scrap a bunch of them due to this problem. I vaguely remember that the pressure got too high for the ion pump to start. If it does start, I think ion current is an indicator of vacuum. In marginal cases there are tricks for starting the ion pump. This is all I remember hearing anecdotaly, maybe others can chime in. This problem is the same as for the 5061 CBT.
Rick Karlquist N6RK David Welch wrote: > I am new to this forum and was wondering if someone would know how to check > if the tube in a agilent 5071a is any good.these units are new in box but > have been in storage many years(bad idea)..is there anything to look at > during start up to give you an indication of outgassing ar vacum loss? could > a tube that locks now fail in a few weeks of use even if new but stored > without power for years?IF anyone has any suggestions let me know > ..thanks..David > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
