The unobtanium connector of Solartron 7061, what to do, please help ?

[lowimpedance]

I believe one member have said that the size is M15, that means the hole is 12mm in diameter, can it be confirmed ? Because if we change the connectors, at least not drill or affect the panel.
 DC1MC

Okay the picture below is of one of these connectors salvaged from a defunct Solartron. The measured diameter of the threaded section is for a 15mm hole. The front outer ring of the socket is 19mm.
Cable diameter on plug is 7mm OD. and the cable is shielded 4 core with each core having that 'PTFE' feel !.

[DC1MC]

I believe one member have said that the size is M15, that means the hole is 12mm in diameter, can it be confirmed ? Because if we change the connectors, at least not drill or affect the panel.
 DC1MC

Okay the picture below is of one of these connectors salvaged from a defunct Solartron. The measured diameter of the threaded section is for a 15mm hole. The front outer ring of the socket is 19mm.
Cable diameter on plug is 7mm OD. and the cable is shielded 4 core with each core having that 'PTFE' feel !.

Now it's much clear, many thanks.

 DC1MC

[tggzzz]

but what to get for some nice shielded dual conductor flexible cable for the main set of 2 wire test leads ?

I'm going to try this one : https://www.ebay.ca/itm/NOS-PTFE-silver-plated-cable-wire-20awg-4c-Shielded-3meter-Speaker/253173432482?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

Will use it for 2 and 4 wires test leads (as recommended in the manual).

It appears that the outer insulation jacket is PTFE but it does not state what the individual wire insulation is. That is sufficient to prevent external chemical/UV/etc damage to the cable.

However, I've seen quite a few cables where the individual wire insulation is something else, e.g. PVC. That is, if you are fussy, less good with respect to insulation and leakage between wires. Whether that matter is a separate issue, of course.

[DC1MC]

but what to get for some nice shielded dual conductor flexible cable for the main set of 2 wire test leads ?

I'm going to try this one : https://www.ebay.ca/itm/NOS-PTFE-silver-plated-cable-wire-20awg-4c-Shielded-3meter-Speaker/253173432482?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

Will use it for 2 and 4 wires test leads (as recommended in the manual).

It appears that the outer insulation jacket is PTFE but it does not state what the individual wire insulation is. That is sufficient to prevent external chemical/UV/etc damage to the cable.

However, I've seen quite a few cables where the individual wire insulation is something else, e.g. PVC. That is, if you are fussy, less good with respect to insulation and leakage between wires. Whether that matter is a separate issue, of course.

Well, got the Chinglish reply at the question if the individual wires are also in PTFE isolation. direct quote:

"Neue Nachricht von: ayumitubes Top Rated Seller(8,365Green Star)
HI Sir
Yes, all PTFE    Thank you

Best Regards
Alex

"

So this is this  ,
DC1MC

[DC1MC]

Now that the cable is done, what are recommending on the business end, hi-quality bananas,  tips, grabbers, all ideas, advices and sources welcome.

 Cheers,
 DC1MC

[tggzzz]

Well, got the Chinglish reply at the question if the individual wires are also in PTFE isolation. direct quote:

"Neue Nachricht von: ayumitubes Top Rated Seller(8,365Green Star)
HI Sir
Yes, all PTFE    Thank you

Best Regards
Alex

"

So this is this  ,
DC1MC

Fomdle the wires when you get them

[tggzzz]

Now that the cable is done, what are recommending on the business end, hi-quality bananas,  tips, grabbers, all ideas, advices and sources welcome.

ISTR at the last https://maker-faire.de/hannover/ the PTB's hp3458 had cables with small gold plated hollow banana plugs. Not sure of the attachment mechanism to the wires, but I suspect solder. Stackable connectors are a convenience.

Take your DMM and check its calibration

Also take a camera to photograph geek porn such as Josephson Junctions,





https://www.eevblog.com/forum/metrology/ptb-at-the-maker-faire-in-hannover/msg1267015/#msg1267015

[Kosmic]

the PTB's hp3458 had cables with small gold plated hollow banana plugs. Not sure of the attachment mechanism to the wires, but I suspect solder. Stackable connectors are a convenience.

Search for "bfa banana plug" on ebay 

[Kosmic]

On my side I think I will go with Pomona low EMF banana plug.

EDIT: error on my side, look like Pomona only make low EMF Spade https://www.pomonaelectronics.com/products/hardware/low-thermal-emf-spade-lug-gold-plated. So it will be regular copper / gold plated banana plug then

[DC1MC]

Come on dear German/EU forum members, really nobody wants some overpriced but hi-quality connectors for their Solartrons  to make the 10pcs quota from Andreas  ?

Please don't for me to fudge other connectors, drill holes and crap in my 7071 !!!


 Waiting with hope,
 DC1Mc

[tggzzz]

Come on dear German/EU forum members, really nobody wants some overpriced but hi-quality connectors for their Solartrons  to make the 10pcs quota from Andreas  ?

I'm waiting for a quote from Fischer UK. I emailed early in the week but no response. I re-asked the question with a different person on Friday afternoon. Unless I misheard him (which is all too possible), he said there was a £50 minimum order limit.

After I receive a quote (or get bored waiting!), we can all make a decision as to how to proceed - possibly via me, possibly via Andreas.

[Ero-Shan]

Come on dear German/EU forum members, really nobody wants some overpriced but hi-quality connectors for their Solartrons  to make the 10pcs quota from Andreas  ?

Please don't for me to fudge other connectors, drill holes and crap in my 7071 !!!


 Waiting with hope,
 DC1Mc

Sorry. But that's just too expensive for my taste. That's about ten times what I paid for the instrument itself.

[tggzzz]

Sorry. But that's just too expensive for my taste. That's about ten times what I paid for the instrument itself.

Welcome to voltnuttery Open your wallet.

Did you really only pay ~EUR5 for the instrument? A connector is, hopefully, ~EUR50 + post and packing.

[DC1MC]

Hmm Ero-Shan, where do you Leute  find these things, SA with 100EUR, 7,5 digits Solartorns with 5EUR, am I doing something wrong  ?

 Cheers,
 DC1Mc

[Kosmic]

To be fair, mine was cheap but also broken. It's my next repair project. It fail 0V test but overall kind of works 

[Neomys Sapiens]

I'm in for one.
How is the procedure?

[DC1MC]

I'm in for one.
How is the procedure?

Well, I think we should let Andreas know how many we want and when we reach 10 send him the cash so he can order, in the mean time I'm looking for banana plugs will gold plating, actually the are not so expensive, too bad that Farnell doesn't serve private customers in Germany, they really have a nice selection.
 
 Cheers,
 DC1MC

[DC1MC]

To be fair, mine was cheap but also broken. It's my next repair project. It fail 0V test but overall kind of works 

Hopefully the worst thing will be some incapacitated capacitors  or just some calibration related stuff.

 Good luck and let us know how it went,
 DC1MC

[The Soulman]

I'm in for one.
How is the procedure?

Well, I think we should let Andreas know how many we want and when we reach 10 send him the cash so he can order, in the mean time I'm looking for banana plugs will gold plating, actually the are not so expensive, too bad that Farnell doesn't serve private customers in Germany, they really have a nice selection.
 
 Cheers,
 DC1MC

I'm happy with these:
https://www.reichelt.nl/Stekker-koppelingen/LAS-30-AU-RT/3/index.html?ACTION=3&LA=2&ARTICLE=130856&GROUPID=5625&artnr=LAS+30+AU+RT&trstct=pol_6
However I'm not a genuine voltnut. 

[Neomys Sapiens]

To be fair, mine was cheap but also broken. It's my next repair project. It fail 0V test but overall kind of works 

Hopefully the worst thing will be some incapacitated capacitors  or just some calibration related stuff.

 Good luck and let us know how it went,
 DC1MC

MC/Staeubli and nothing else! They will sell, but they have a minimum order value. I need some stuff from them too, so we could arrange something.

[tggzzz]

I'm in for one.
How is the procedure?

Well, I think we should let Andreas know how many we want and when we reach 10 send him the cash so he can order, in the mean time I'm looking for banana plugs will gold plating, actually the are not so expensive, too bad that Farnell doesn't serve private customers in Germany, they really have a nice selection.
 
 Cheers,
 DC1MC

I'm happy with these:
https://www.reichelt.nl/Stekker-koppelingen/LAS-30-AU-RT/3/index.html?ACTION=3&LA=2&ARTICLE=130856&GROUPID=5625&artnr=LAS+30+AU+RT&trstct=pol_6
However I'm not a genuine voltnut. 

I'm concerned about that style having rotating baskets/lanterns. That means there is only a low-pressure contact, and I don't understand what that might do when measuring uV.

However, I'm only a wannabe voltnut - or rather a wannaNOTbe voltnut

[tggzzz]

I'm in for one.
How is the procedure?

Well, I think we should let Andreas know how many we want and when we reach 10 send him the cash so he can order, in the mean time I'm looking for banana plugs will gold plating, actually the are not so expensive, too bad that Farnell doesn't serve private customers in Germany, they really have a nice selection.

I'll be in a position to make a statement by the end of next week.

If we are all being nice to each other, I don't mind adding things to a Farnell order and then forwarding them.

[tggzzz]

W.r.t. cable and connectors, this thread is becoming interesting:
https://www.eevblog.com/forum/metrology/i-would-like-to-buy-this-pomona-cable/msg1536122/#msg1536122

[DC1MC]

OK gentlebeings, please offer me your opinion about these Hirschmann products:

https://www.reichelt.nl/4mm-Jacks/PKI-10-A-AU-RT/3/index.html?ACTION=3&LA=2&ARTICLE=128878
https://www.reichelt.nl/4mm-Plugs-Clutches/BUELA-30K-AU-RT/3/index.html?ACTION=3&LA=2&ARTICLE=160515&GROUPID=5625&artnr=BUELA+30K+AU+RT&trstct=pol_6

or these testleads:

https://www.reichelt.nl/Laboratoriumleidingen/MLN-150-25-AU-RT/3/index.html?ACTION=3&LA=3&ARTICLE=160572&GROUPID=5624&trstct=vrt_pdn

Now I have to recover the Farnell list of stuff and besides Conrad, who else distribute MC/Stäubli ?

 Cheers,
 DC1MC

[capt bullshot]

The PKI are fine, the rest I don't like for various reasons.

IMO the BUELA are just crap, no matter how much gold is applied. The test leads are okayish, but not as nice as the proper MC ones (the plugs are too bulky and loose).