I looked at the DC specs of the 3457 and thats the same as the solartron. I am looking sub uV like the solartron. The 3457 does not have that. So I think, regarding your reactions and the price, i'd better first take a look at the solartron. Modify it a bit ( cooling-ribs on the outside, one on top above the transformer and one on the back where the regulators should be ( i'm told, not looked yet) maybe a fan blowing over the ribs.) replace the keylock with a switch ( i have not a good key, it works but not smooth) then put banana busses instead of the back nr2 input connector on the front and replace the mainsswitch to the front. ( instead of climbing on a hair to reach the switch)
I printed the service manual of the 7061 and i think I first do the tests ( psu, frequency, input current ect) i also noted my zero problem is because I shorted both inputs but i need to short the reference and front inputs. That could explain why zero often does not work ( error, zero to large or something lile that) I bought a Keithley 2000 last year, it was comparable to the Fluke 8046 but around 400 euro cheaper. I bought it straight from Keithley including calibration. Besides that I have a keithley 196 that was just calibrated when I bought it. ( and a 199) I was aiming for the holy grale of meters and a 3457 turns out to be a whole different beast. Someone I know bought a 3456 for 225 euro, fresh calibrated, that is 6,5 digits too. So i wondered why is a 3457 so much more expensive. But I better wait and save more money in the hope to find one day an affortable 3458. One should always keep something to dream about :-) Fred Fred PA4TIM Op 21 aug. 2012 om 22:06 heeft John Phillips <john.philli...@gmail.com> het volgende geschreven: > you can put your 3457A into statistics mode and pick up +/- 29,999,999 > counts from the display. > +/- 2,999,999 counts is all you can get form the normal /live mode. > > On Tue, Aug 21, 2012 at 12:52 PM, J. L. Trantham <jlt...@att.net> wrote: > >> Fred, >> >> 700 euro seems a bit high, at least by US standards, for a 3457A. It is a >> good meter and I have one. Though no longer supported, Agilent will still >> calibrate one for $200.22, according to their website. >> >> You might want to consider a Fluke 8846A. I have seen them sell for $900 >> new. I don't have one but it was going to be my next addition until I got >> a >> 3458A. >> >> What is the issue with the 7061? >> >> Joe >> >> -----Original Message----- >> From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On >> Behalf Of Fred Schneider >> Sent: Tuesday, August 21, 2012 2:00 PM >> To: volt-nuts@febo.com >> Subject: [volt-nuts] HP3457 >> >> I have a solatron 7061 but i am not very impressed with it. Must I go >> looking for an alternative or is this 7061 when i gave it a good checkup / >> overhaul a good meter ? >> I am offered a 3457 for 700 euro and the owner, will calibrate it (he has >> several calibrtors, standards and a couple of 3458 meters. My intuition >> tells me to trusts him ( and that had never let me down before)) >> >> But he also told it is only 7,5 digit over hpib, and has 6,5 digit display. >> >> My Keithly 2000 is 6,5 digits and over RS232 i get two digits extra. I once >> tried that, but that took me a lot of time to get it more ore less working, >> I am not so into computers and afraid I do not get it to work. >> >> Is it really better as my ( one year old 2000 ?) and better as my Solartron >> can be ? >> I am afraid a 3458 is outside my budget. >> >> Fred >> >> >> >> Fred PA4TIM >> _______________________________________________ >> volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts >> and follow the instructions there. >> >> >> _______________________________________________ >> volt-nuts mailing list -- volt-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts >> and follow the instructions there. >> > > > > -- > John Phillips > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.