Re: [volt-nuts] Keithley triax cables, 6011 and 1506/1507
On Sat, Nov 21, 2015 at 12:43:07PM -0500, Todd Micallef wrote: > I did purchase a MS3106-E16-11P that fits it perfectly. The original > connector appears to be gold plated(?) and the MS connector is silver > plated. It is unknown which "copper alloy" is in the MS contacts. I have > had other projects so I have not had time to determine how well the MS > connector compares to the original while shorted. Hello Todd. Thank you, I will buy the connector, then perhaps in the future I may be able to find the original one. Brian suggested the 1507A cable, it's in effect marked as discontinued by some sellers while you can still order it from others, but anyway it's about 500 USD and actually it's too much. > There is a Keithley 140 up for sale on the usual auction site. I cannot > find the manual for it, but maybe the seller will be willing to part it > from the meter? It has been listed for quite a while. It would be a matter > of the seller confirming the part number stamped on the edge of the > connector. The seller answered me and he said the cable goes with the meter... > As for solder, Keithley recommends Sn/Ag4 solder for the 2182A connectors. I have the usual SnAg3Cu0.5 and in everything I can find there is still 0.5Cu. However I saw that the SnAg4 is used for the assembly of solar panels strings so I know where to ask. > I am sure that discussion (low thermal solder) has been had here in another > thread. I think in the past has been concluded that an adequate replacement is Sn10Pb90 but it's probably harder to find than SnAg4 because of RoHS. I will try to crimp the wire and avoid the matter completely. Best regards, Andrea Baldoni ___ 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] Keithley triax cables, 6011 and 1506/1507
My bad Andrea, the Triax connector is 2 lug - it is the Pomona and others that are 3 lug. Russ On Sat, Nov 21, 2015 at 10:43 AM, Andrea Baldoni wrote: > On Thu, Nov 19, 2015 at 10:38:40AM -0600, Russ Ramirez wrote: > > > Andrea, I can comment on the Triax cabling in that the Pomona and others > > you see on ebay are not compatible for the Keithley units generally. I > have > > a 617 electrometer that I acquired from the designer of it, and he told > me > > that Keithley Sr made sure the triax design was unique; a Keithley > designed > > 3-lug Triax BNC design. Then as you already are aware, there is the > > Hello Russ. > I am aware that there are also 3-lugs triaxial BNC, but my 617 has a > 2-lugs one. > > Surely this is the original connector on the equipment; maybe you have > a more recent revision of it? > > > Faraday Shield 'box' with alligator clip leads, attached to the Triax > > chassis connector internally with solid wires (just used Cat-5 wire > pieces) > > so that outside EM would not add to the noise level on low current > > measurements. That actually does make a huge difference and allow for > > extremely low voltage and current measurements with greater certainty. > This > > instrument is a real pleasure to work with. > > When I will finally be able to test it, I will try your suggestion. > > By the way, no one knows anything about the connector for the 181 > nanovoltmeter > and relative cables? While triax are already difficult to source, this one > seems to be impossible. > > Best regards, > Andrea Baldoni > ___ > 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] Keithley triax cables, 6011 and 1506/1507
Keithley still makes this cable. It is a model 1507A. I believe that the A version is ROHS It is not a cheap cable. The connector is an Amphenol. On Sat, Nov 21, 2015 at 12:43 PM, Todd Micallef wrote: > I have searched for the original part listed on my 181 cable ITT-Canon > CA3106B16-11P-A105 but never had any luck finding another to make a > shorting plug. > > I did purchase a MS3106-E16-11P that fits it perfectly. The original > connector appears to be gold plated(?) and the MS connector is silver > plated. It is unknown which "copper alloy" is in the MS contacts. I have > had other projects so I have not had time to determine how well the MS > connector compares to the original while shorted. > > There is a Keithley 140 up for sale on the usual auction site. I cannot > find the manual for it, but maybe the seller will be willing to part it > from the meter? It has been listed for quite a while. It would be a matter > of the seller confirming the part number stamped on the edge of the > connector. > > As for solder, Keithley recommends Sn/Ag4 solder for the 2182A connectors. > I am sure that discussion (low thermal solder) has been had here in another > thread. > > On Sat, Nov 21, 2015 at 11:43 AM, Andrea Baldoni > wrote: > > > On Thu, Nov 19, 2015 at 10:38:40AM -0600, Russ Ramirez wrote: > > > > > Andrea, I can comment on the Triax cabling in that the Pomona and > others > > > you see on ebay are not compatible for the Keithley units generally. I > > have > > > a 617 electrometer that I acquired from the designer of it, and he told > > me > > > that Keithley Sr made sure the triax design was unique; a Keithley > > designed > > > 3-lug Triax BNC design. Then as you already are aware, there is the > > > > Hello Russ. > > I am aware that there are also 3-lugs triaxial BNC, but my 617 has a > > 2-lugs one. > > > > Surely this is the original connector on the equipment; maybe you have > > a more recent revision of it? > > > > > Faraday Shield 'box' with alligator clip leads, attached to the Triax > > > chassis connector internally with solid wires (just used Cat-5 wire > > pieces) > > > so that outside EM would not add to the noise level on low current > > > measurements. That actually does make a huge difference and allow for > > > extremely low voltage and current measurements with greater certainty. > > This > > > instrument is a real pleasure to work with. > > > > When I will finally be able to test it, I will try your suggestion. > > > > By the way, no one knows anything about the connector for the 181 > > nanovoltmeter > > and relative cables? While triax are already difficult to source, this > one > > seems to be impossible. > > > > Best regards, > > Andrea Baldoni > > ___ > > 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] Keithley triax cables, 6011 and 1506/1507
I have searched for the original part listed on my 181 cable ITT-Canon CA3106B16-11P-A105 but never had any luck finding another to make a shorting plug. I did purchase a MS3106-E16-11P that fits it perfectly. The original connector appears to be gold plated(?) and the MS connector is silver plated. It is unknown which "copper alloy" is in the MS contacts. I have had other projects so I have not had time to determine how well the MS connector compares to the original while shorted. There is a Keithley 140 up for sale on the usual auction site. I cannot find the manual for it, but maybe the seller will be willing to part it from the meter? It has been listed for quite a while. It would be a matter of the seller confirming the part number stamped on the edge of the connector. As for solder, Keithley recommends Sn/Ag4 solder for the 2182A connectors. I am sure that discussion (low thermal solder) has been had here in another thread. On Sat, Nov 21, 2015 at 11:43 AM, Andrea Baldoni wrote: > On Thu, Nov 19, 2015 at 10:38:40AM -0600, Russ Ramirez wrote: > > > Andrea, I can comment on the Triax cabling in that the Pomona and others > > you see on ebay are not compatible for the Keithley units generally. I > have > > a 617 electrometer that I acquired from the designer of it, and he told > me > > that Keithley Sr made sure the triax design was unique; a Keithley > designed > > 3-lug Triax BNC design. Then as you already are aware, there is the > > Hello Russ. > I am aware that there are also 3-lugs triaxial BNC, but my 617 has a > 2-lugs one. > > Surely this is the original connector on the equipment; maybe you have > a more recent revision of it? > > > Faraday Shield 'box' with alligator clip leads, attached to the Triax > > chassis connector internally with solid wires (just used Cat-5 wire > pieces) > > so that outside EM would not add to the noise level on low current > > measurements. That actually does make a huge difference and allow for > > extremely low voltage and current measurements with greater certainty. > This > > instrument is a real pleasure to work with. > > When I will finally be able to test it, I will try your suggestion. > > By the way, no one knows anything about the connector for the 181 > nanovoltmeter > and relative cables? While triax are already difficult to source, this one > seems to be impossible. > > Best regards, > Andrea Baldoni > ___ > 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] Keithley triax cables, 6011 and 1506/1507
On Thu, Nov 19, 2015 at 10:38:40AM -0600, Russ Ramirez wrote: > Andrea, I can comment on the Triax cabling in that the Pomona and others > you see on ebay are not compatible for the Keithley units generally. I have > a 617 electrometer that I acquired from the designer of it, and he told me > that Keithley Sr made sure the triax design was unique; a Keithley designed > 3-lug Triax BNC design. Then as you already are aware, there is the Hello Russ. I am aware that there are also 3-lugs triaxial BNC, but my 617 has a 2-lugs one. Surely this is the original connector on the equipment; maybe you have a more recent revision of it? > Faraday Shield 'box' with alligator clip leads, attached to the Triax > chassis connector internally with solid wires (just used Cat-5 wire pieces) > so that outside EM would not add to the noise level on low current > measurements. That actually does make a huge difference and allow for > extremely low voltage and current measurements with greater certainty. This > instrument is a real pleasure to work with. When I will finally be able to test it, I will try your suggestion. By the way, no one knows anything about the connector for the 181 nanovoltmeter and relative cables? While triax are already difficult to source, this one seems to be impossible. Best regards, Andrea Baldoni ___ 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] Keithley triax cables, 6011 and 1506/1507
Andrea, I can comment on the Triax cabling in that the Pomona and others you see on ebay are not compatible for the Keithley units generally. I have a 617 electrometer that I acquired from the designer of it, and he told me that Keithley Sr made sure the triax design was unique; a Keithley designed 3-lug Triax BNC design. Then as you already are aware, there is the performance of the Keithley cable itself. I also was told to create a Faraday Shield 'box' with alligator clip leads, attached to the Triax chassis connector internally with solid wires (just used Cat-5 wire pieces) so that outside EM would not add to the noise level on low current measurements. That actually does make a huge difference and allow for extremely low voltage and current measurements with greater certainty. This instrument is a real pleasure to work with. Russ On Thu, Nov 19, 2015 at 8:12 AM, Andrea Baldoni wrote: > Hello. > > I will soon acquire a nVmeter, a current source and an electrometer made by > Keithley. They will come without any cable and manuals and in unknown > working > condition. > > One of the first steps is obtaining the cables. > I saw some of them for sale on Ebay, but I can roll my own, if it's > possible > to do it without recurring to poisonous cadmium solder and the like (for > the > nVmeter; the electrometer too will advantage from low EMF cables but maybe > it's > not so important, or not? More important would be the cable insulation and > triboelectricity). > > Someone already did it? What components (connectors, cable) do you suggest? > > Best regards, > Andrea Baldoni > ___ > 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.
