The main use of these would be shorting sense to drive jacks. They could also be used for input shorts. The advantage over bare copper would be the ENIG gold finish... bare copper quickly forms oxide layers and copper oxide has a horrible thermal EMF. Granted, ENIG gold basically involves waving a bar of gold over the plating tank and hoping some gold atoms fall off. The board house I use deposits a thicker layer than most. You don't want to know what "hard gold" finish would cost. Using a PCB house to fab them is probably 20 times less expensive than having a machine shop do them out of solid copper... maybe 50 times less if you need to get them gold plated.

Mark I'm trying to imagine what you are describing - is this PCBs with 4mm banana plugs installed or a small PCB with two slots at 3/4" centres to match the socket spacing? If the latter is this intended to cover just two sockets or to short all four Force and Sense sockets together (if arranged like a 3458A)? Thanks Dave -----Original Message----- From: volt-nuts [mailto:volt-nuts-bounces@febo.com] On Behalf Of Mark Sims Sent: 09 November 2017 02:14 To: volt-nuts@febo.com Subject: [volt-nuts] Banana jack shorting straps The main use of these would be shorting sense to drive jacks. They could also be used for input shorts. The advantage over bare copper would be the ENIG gold finish... bare copper quickly forms oxide layers and copper oxide has a horrible thermal EMF. Granted, ENIG gold basically involves waving a bar of gold over the plating tank and hoping some gold atoms fall off. The board house I use deposits a thicker layer than most. You don't want to know what "hard gold" finish would cost. Using a PCB house to fab them is probably 20 times less expensive than having a machine shop do them out of solid copper... maybe 50 times less if you need to get them gold plated. _______________________________________________ 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.

You gentlemen are aware that these things are available from Fluke at a fairly reasonable price? http://nl.farnell.com/fluke/fluke-884x-short/lead-test-4-wire-fluke-884x-short/dp/1274092 ⁣Met vriendelijke groet, Rob Klein verstuurd vanaf mijn smartphone​ Op 9 nov. 2017 14:12, om 14:12, "David C. Partridge" <david.partridge@perdrix.co.uk> schreef: >Mark > >I'm trying to imagine what you are describing - is this PCBs with 4mm >banana plugs installed or a small PCB with two slots at 3/4" centres to >match the socket spacing? > >If the latter is this intended to cover just two sockets or to short >all four Force and Sense sockets together (if arranged like a 3458A)? > >Thanks >Dave > >-----Original Message----- >From: volt-nuts [mailto:volt-nuts-bounces@febo.com] On Behalf Of Mark >Sims >Sent: 09 November 2017 02:14 >To: volt-nuts@febo.com >Subject: [volt-nuts] Banana jack shorting straps > >The main use of these would be shorting sense to drive jacks. They >could also be used for input shorts. The advantage over bare copper >would be the ENIG gold finish... bare copper quickly forms oxide layers >and copper oxide has a horrible thermal EMF. Granted, ENIG gold >basically involves waving a bar of gold over the plating tank and >hoping some gold atoms fall off. The board house I use deposits a >thicker layer than most. You don't want to know what "hard gold" >finish would cost. > >Using a PCB house to fab them is probably 20 times less expensive than >having a machine shop do them out of solid copper... maybe 50 times >less if you need to get them gold plated. >_______________________________________________ >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.

I believe that the Fluke shorting system has 3/4" spacing both vertically and horizontally, which is not compatible with the 3458 (I couldn't find a spec but visually it looks identically in both dimensions in the photos). The 3458 spacing is slightly greater than 3/4' horizontally. On Thu, Nov 9, 2017 at 10:14 AM, Rob Klein <rob.klein@smalldesign.nl> wrote: > You gentlemen are aware that these things are available from Fluke at a > fairly reasonable price? > > http://nl.farnell.com/fluke/fluke-884x-short/lead-test-4- > wire-fluke-884x-short/dp/1274092 > > > ⁣Met vriendelijke groet, > Rob Klein > > verstuurd vanaf mijn smartphone​ > > Op 9 nov. 2017 14:12, om 14:12, "David C. Partridge" < > david.partridge@perdrix.co.uk> schreef: > >Mark > > > >I'm trying to imagine what you are describing - is this PCBs with 4mm > >banana plugs installed or a small PCB with two slots at 3/4" centres to > >match the socket spacing? > > > >If the latter is this intended to cover just two sockets or to short > >all four Force and Sense sockets together (if arranged like a 3458A)? > > > >Thanks > >Dave > > > >-----Original Message----- > >From: volt-nuts [mailto:volt-nuts-bounces@febo.com] On Behalf Of Mark > >Sims > >Sent: 09 November 2017 02:14 > >To: volt-nuts@febo.com > >Subject: [volt-nuts] Banana jack shorting straps > > > >The main use of these would be shorting sense to drive jacks. They > >could also be used for input shorts. The advantage over bare copper > >would be the ENIG gold finish... bare copper quickly forms oxide layers > >and copper oxide has a horrible thermal EMF. Granted, ENIG gold > >basically involves waving a bar of gold over the plating tank and > >hoping some gold atoms fall off. The board house I use deposits a > >thicker layer than most. You don't want to know what "hard gold" > >finish would cost. > > > >Using a PCB house to fab them is probably 20 times less expensive than > >having a machine shop do them out of solid copper... maybe 50 times > >less if you need to get them gold plated. > >_______________________________________________ > >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. >

Hmm, it appears that is true. I've just checked on both my 3456 and 3457 and they do indeed have a larger horizontal spacing. Interestingly, the spacing on the 3456 is slightly smaller than on the 3457. ⁣Met vriendelijke groet, Rob Klein verstuurd vanaf mijn smartphone​ Op 9 nov. 2017 19:48, om 19:48, Randy Evans <randyevans2688@gmail.com> schreef: >I believe that the Fluke shorting system has 3/4" spacing both >vertically >and horizontally, which is not compatible with the 3458 (I couldn't >find a >spec but visually it looks identically in both dimensions in the >photos). >The 3458 spacing is slightly greater than 3/4' horizontally. > >On Thu, Nov 9, 2017 at 10:14 AM, Rob Klein <rob.klein@smalldesign.nl> >wrote: > >> You gentlemen are aware that these things are available from Fluke at >a >> fairly reasonable price? >> >> http://nl.farnell.com/fluke/fluke-884x-short/lead-test-4- >> wire-fluke-884x-short/dp/1274092 >> >> >> ⁣Met vriendelijke groet, >> Rob Klein >> >> verstuurd vanaf mijn smartphone​ >> >> Op 9 nov. 2017 14:12, om 14:12, "David C. Partridge" < >> david.partridge@perdrix.co.uk> schreef: >> >Mark >> > >> >I'm trying to imagine what you are describing - is this PCBs with >4mm >> >banana plugs installed or a small PCB with two slots at 3/4" centres >to >> >match the socket spacing? >> > >> >If the latter is this intended to cover just two sockets or to short >> >all four Force and Sense sockets together (if arranged like a >3458A)? >> > >> >Thanks >> >Dave >> > >> >-----Original Message----- >> >From: volt-nuts [mailto:volt-nuts-bounces@febo.com] On Behalf Of >Mark >> >Sims >> >Sent: 09 November 2017 02:14 >> >To: volt-nuts@febo.com >> >Subject: [volt-nuts] Banana jack shorting straps >> > >> >The main use of these would be shorting sense to drive jacks. They >> >could also be used for input shorts. The advantage over bare copper >> >would be the ENIG gold finish... bare copper quickly forms oxide >layers >> >and copper oxide has a horrible thermal EMF. Granted, ENIG gold >> >basically involves waving a bar of gold over the plating tank and >> >hoping some gold atoms fall off. The board house I use deposits a >> >thicker layer than most. You don't want to know what "hard gold" >> >finish would cost. >> > >> >Using a PCB house to fab them is probably 20 times less expensive >than >> >having a machine shop do them out of solid copper... maybe 50 times >> >less if you need to get them gold plated. >> >_______________________________________________ >> >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.