Good questions (firmware rev.)! Yes, it's not clear to me either - I'll have to ask him about it again. He has followed this thing throughout its lifetime so if anybody would know it would be him ... good old xxxxx. :-) He's gone for the weekend so I'll check with him next week. The 5370B is now out of support life so I'm not sure what could be done as far as a firmware upgrade by Agilent (HP is out of the picture - they do computers, not instruments anymore!).
Jim >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] >Behalf Of David Kirkby >Sent: Friday, April 15, 2005 1:52 PM >To: Discussion of precise time and frequency measurement >Subject: Re: [time-nuts] Difference between HP 5370A and 5370B > > >[EMAIL PROTECTED] wrote: >> Hi again David, >> >> I talked to xxxxx this morning and here's what >> he said: > >Thanks. > >> The 5370B has a different processor board than the >> "A" model, with on-board RAM (the "A" had a separate >> RAM board). The "B" has had an upgrade to its DAC >> board. The "B" has a different input module that is >> more stable than in the "A". The firmware has had an >> upgrade in the "B", as the HPIB (GPIB) would occasionally >> hang up in the "A" model. The bad news is that the >> newer firmware carries the same rev. number as the old one >> so you can't easily tell which one you have installed. > >I'm slightly lost there. You seem to be implying the B's have newer >firmware than the A's, but then saying its not easy to tell if >you have >the new firmware, since the revision is the same. If the newer >firmware >was installed only in B's, then all you would need to do is >look at the >model number. Clearly then I assume either some B's have the old >firmware, or some A's have the new firmware, or perhaps HP >would update >an A to a B firmware. > _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
