[volt-nuts] Keithley triax cables, 6011 and 1506/1507

Russ Ramirez russ.ramirez at gmail.com
Sat Nov 21 15:38:22 EST 2015

My bad Andrea, the Triax connector is 2 lug - it is the Pomona and others
that are 3 lug.


On Sat, Nov 21, 2015 at 10:43 AM, Andrea Baldoni <erm191ba3 at ermione.com>

> 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 at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
> and follow the instructions there.

More information about the volt-nuts mailing list