Re: [volt-nuts] What makes a HP3458A so expensive
Hi Attila In practical terms, that most expensive comodity - time is the biggest cost driver. While the components appear to be the same as "cheaper" meters, many of will have been carefully selected for best performance from a larger batch. They may also have been "burned-in" for stability. These processes take time and time is money. The selection or burn-in may have been done by the supplier but they still pass on the cost. Leakage currents and thermal EMF's have a larger impact at higher accuracy. This drives the use of more expensive materials such as PTFE insulators, exotic alloys for resistors, switch / relay contacts and beryllium copper input connectors. You can't tell most of these differences by casual observation (itwould need XRF or chemical analysis to tell beryllium copper from other alloys). Robert G8RPI. From: Attila Kinali To: volt-nuts@febo.com Sent: Thursday, 16 January 2014, 18:34 Subject: [volt-nuts] What makes a HP3458A so expensive Hi, I recently got my hands on a HP3458A (unfortunately, the NVRAM batteries are dead, but that's another story) and started digging around a bit. These beasts are sold for 3kUSD and up on ebay, while e.g. a Fluke 8845 which seems comparable (beside being 6 1/2 digits) that sells for 1500CHF new. So, what makes the HP3458A so expensive? Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being superficial. It's a matter of joy in life. -- Sophie Scholl ___ 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.
Re: [volt-nuts] What makes a HP3458A so expensive
"Poul-Henning Kamp" writes: > In message <20140116193407.2daf5e3fbefdda6e64062...@kinali.ch>, Attila Kinali > w > rites: >>Hi, >> >>I recently got my hands on a HP3458A (unfortunately, the NVRAM batteries >>are dead, but that's another story) and started digging around a bit. >>These beasts are sold for 3kUSD and up on ebay, while e.g. a Fluke 8845 >>which seems comparable (beside being 6 1/2 digits) that sells for 1500CHF new. >> >>So, what makes the HP3458A so expensive? > > 8.5 vs. 6.5 digits. A hundred times better :) > Read the HP Journal issue about it Also it is still a current model, and their top of the range, despite being 25 years old! Around $10,000 new. -- John Devereux ___ 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.
Re: [volt-nuts] What makes a HP3458A so expensive
In message <20140116193407.2daf5e3fbefdda6e64062...@kinali.ch>, Attila Kinali w rites: >Hi, > >I recently got my hands on a HP3458A (unfortunately, the NVRAM batteries >are dead, but that's another story) and started digging around a bit. >These beasts are sold for 3kUSD and up on ebay, while e.g. a Fluke 8845 >which seems comparable (beside being 6 1/2 digits) that sells for 1500CHF new. > >So, what makes the HP3458A so expensive? 8.5 vs. 6.5 digits. Read the HP Journal issue about it -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ 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.
Re: [volt-nuts] What makes a HP3458A so expensive
Attila wrote: These beasts are sold for 3kUSD and up on ebay, while e.g. a Fluke 8845 which seems comparable (beside being 6 1/2 digits) that sells for 1500CHF new. So, what makes the HP3458A so expensive? U -- two more digits?? Given the difficulty of improving accuracy and precision by two orders of magnitude over a 6-1/2 digit meter, it's surprising they aren't $30k. The comparable Fluke is the 8508A, not the 8845 (which is comparable to the HP 3456A). Another generally comparable meter is the Keithly 2002. The Solartron/Schlumberger (and I think a third vendor sold the same meter) 7081 is the value leader in 8-1/2 digit meters, but in practice they are not in the same league as the 3458A/8508A/2002 meters. Best regards, Charles ___ 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] What makes a HP3458A so expensive
Hi, I recently got my hands on a HP3458A (unfortunately, the NVRAM batteries are dead, but that's another story) and started digging around a bit. These beasts are sold for 3kUSD and up on ebay, while e.g. a Fluke 8845 which seems comparable (beside being 6 1/2 digits) that sells for 1500CHF new. So, what makes the HP3458A so expensive? Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being superficial. It's a matter of joy in life. -- Sophie Scholl ___ 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.
Re: [volt-nuts] Connector PN
Thanks Bill, Once I had the PN I found it at Amazon (amazing!) and Online Components, both for $2.20 each. http://www.amazon.com/Molex-Waldom-22-17-2052-Connector-Receptacles/dp/B00GQR8ABC http://www.onlinecomponents.com/molex-waldom-22172052.html?p=40554276 Randy On Thursday, January 16, 2014 7:44 AM, Bill Gold wrote: update The HP/AGILENT/KEYSIGHT P/N is 1251-6041 and is in stock at $5.13 ea. Bill - Original Message - From: "Bill Gold" To: "Randy Evans" ; "Discussion of precise voltage measurement" Sent: Thursday, January 16, 2014 7:17 AM Subject: Re: [volt-nuts] Connector PN > Randy: > > The 3458A CLIP shows this connector as a Molex 22-17-2052. Looking on > Molex this seems to be a current number. Mouser and Digikey don't have any > stock. Alliedelect doesn't show anything. Good luck. > > Bill > > - Original Message - > From: "Randy Evans" > To: > Sent: Wednesday, January 15, 2014 6:54 PM > Subject: [volt-nuts] Connector PN > > > > Does anyone know the manufacturer and part number of the connectors used > on the HP-3458 voltage reference board? > > > > thanks, > > > > Randy Evans > > ___ > > 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. ___ 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.
Re: [volt-nuts] Connector PN
update The HP/AGILENT/KEYSIGHT P/N is 1251-6041 and is in stock at $5.13 ea. Bill - Original Message - From: "Bill Gold" To: "Randy Evans" ; "Discussion of precise voltage measurement" Sent: Thursday, January 16, 2014 7:17 AM Subject: Re: [volt-nuts] Connector PN > Randy: > > The 3458A CLIP shows this connector as a Molex 22-17-2052. Looking on > Molex this seems to be a current number. Mouser and Digikey don't have any > stock. Alliedelect doesn't show anything. Good luck. > > Bill > > - Original Message - > From: "Randy Evans" > To: > Sent: Wednesday, January 15, 2014 6:54 PM > Subject: [volt-nuts] Connector PN > > > > Does anyone know the manufacturer and part number of the connectors used > on the HP-3458 voltage reference board? > > > > thanks, > > > > Randy Evans > > ___ > > 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. ___ 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.
Re: [volt-nuts] Connector PN
Randy: The 3458A CLIP shows this connector as a Molex 22-17-2052. Looking on Molex this seems to be a current number. Mouser and Digikey don't have any stock. Alliedelect doesn't show anything. Good luck. Bill - Original Message - From: "Randy Evans" To: Sent: Wednesday, January 15, 2014 6:54 PM Subject: [volt-nuts] Connector PN > Does anyone know the manufacturer and part number of the connectors used on the HP-3458 voltage reference board? > > thanks, > > Randy Evans > ___ > 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.
