How's the voltage across the hot-wire ionizer, and the mass spec voltage? I assume the other meter readings are within the tolerances given in the manual?
Hopefully it's not an open ionizer filament. I bought one tube on eBay awhile back that had good vacuum but no ionizer continuity. -- john, KE5FX > -----Original Message----- > From: [email protected] [mailto:[email protected]]on > Behalf Of paul swed > Sent: Sunday, October 18, 2009 9:25 AM > To: [email protected] > Subject: [time-nuts] hp5061a/b no I beam current > > > Lets see if this works. > I am new to the time-nuts user group > Just obtained a HP 5061a CS standard. Pumps down very well to 0 (Hard to > believe) But it did. > CS oven comes up to temp. But in operation no I beam current. > Noticed that the tube states -2083V multiplier. But its > regulating to -1606V > can adjust to 2083. > Still no current. Also no 2nd harmonic but with No I that's what I expect. > Its an interesting unit from the naval observatory. > I have the traditional 5061 a service manual. Its halfway between > a A and a > B unit. > As example A15 power reg is using ICs and I found a website with that > schematic. > The CS control board A11 also is using ICs at least 3 switching > supplies us > SG3524s > I would like to see a schematic of this if anyone has it. Though I suspect > that the CS board is fine. > I want to check several of the voltages though. > Any help would be appreciated. > Thanks > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
