Test Equipment Anonymous (TEA) group therapy thread

[bd139]

Well I just got outbid on a 465B. I think I’m good on the “I’m not buying another 4xx scope again” comment  still

[tautech]

Well I just got outbid on a 465B. I think I’m good on the “I’m not buying another 4xx scope again” comment  still

But for how long ?
Really, do you actually need the frustration ?

[bd139]

I deal with kubernetes at work. 465 is walk in the park 

[Saskia]

Yeah it's cisco though which is definitely telecoms which says "there be dragons" usually. 48V everywhere. Or slightly more.

It'd run one of those 48V BT Weller soldering irons nicely though that were all over ebay a few years back.

It's for the PoE. And the amount of gear running off -48 but converting it +5 TTL and lower levels without massive EMI is proof that the chinesium SMPS we're hating are most often found in the "light" versions..

I once spent three days with a pair of PSU designers from Delta; we were investigating PSU failures in Cisco gear. Instructive. I was way too clueless to ask the right questions but I made sure to learn as much as I could about their proposed solution to our problem; more mains transient protection.

Dillon Aeros run on 48V ...

[McBryce]

Well I just got outbid on a 465B. I think I’m good on the “I’m not buying another 4xx scope again” comment  still

It was the other bidder who decided that you didn't buy it, not your inner willpower (or lack of it). 

McBryce.

[bd139]

My inner Ferengi thought it was too much latinum to go higher I think 

Just noticed good old Tim is back!

[Cerebus]

gasoline is at about 7$ per gallon over here after the last tax hikes.
Intended to go up to 20$ per gallon if the green party wins ...

It's a similar price here, with around 2/3 of the price being tax in one form or another.

$6.74 USD per Gallon at the local Tesco here, over $7.50 at motorway services. (using current exchange rates and US gallon not imperial)

Yea, I realize I'm preaching to the choir concerning gas prices here vs the EU and UK. When I got my license in 1970 gas was about .28 USD/gallon. Everyone went nuts at the first fuel crisis in 1973 when it went to .50 USD/gallon. And when it hit $1.00 USD/gallon the world was going to end. 

The real tragedy was beer going from 23p a pint the year before I started university to £1.50 a decade later. One pound fifty went from the price of a good evening out (six pints and a bag of chips on the way home) to the price of a single pint, criminal!

[Cerebus]

The scariest stuff I have in the lab is Ethyl Acetate. It works on PLA like an acetone works on ABS (smooths / blends the surface etc) but it's definitely not something you want to get in your lungs or on your skin. I only use it outside with a mask and gloves. I'm not a chemist, so I treat it like it would kill me - Less knowledge = more precaution.

McBryce.

Nothing scary about ethyl acetate, its used as a food flavouring. A rather crude one, but the fruits it's used to simulate (pears and bananas mostly) contain it naturally. For the the Brits who are old enough to have eaten them, pear drops are sugar, malic or citric acid, and ethyl acetate.

[Specmaster]

don't inhale, don't get it on your skin. Small quantities = blindness, large quantities, well ...

Yes, you have to be more careful with it than with IPA. The flip side is that it does a better job prepping a print surface than crappy diluted IPA which is often all you can get under COVID restrictions.

I expect anyone in here to read the label, FFS. But for those playing along at home, yes it is DANGEROUS. More toxic than IPA, and similarly flammable.

The jug warns aboot blindness/poisoning if ingested; this includes inhalation of vapor. If handled with care approximately as dangerous as pure IPA. I've bought from several different brands and all say the same thing.

It will burn the skin if left in direct contact; IPA usually will not. Direct contact with mucous membranes can allow absorption directly into the bloodstream, and sufficient contact area with skin will as well.

Lethal/blindness volume as little as 10ml if ingested. DO NOT DRINK THIS SHIT. DO NOT INHALE CONCENTRATED VAPORS.

mnem
 

Hmm, why is that I can't stop thinking that after an accident that people would wish that they'd stayed with diluted IPA and just used a little more muscle etc? Some things are really only intended for use in highly specified and controlled environments like fume extraction cabinets with protective gloves, splash protection for eyes etc and then still having all the other safety equipment and personnel to hand in case the unexpected should happen 

[Specmaster]

UK now got a lot less interesting for shipping right now..

Dont worry, they said, Brexit will make no impact in the splendid economic future of the Empire! In fact, they continued, the world's countries will come begging at our court for us to bestow them with fair trade deals.

Or something.

Yeah, and they lied about other things as well 

[factory]

Side issue @Pat speaking of old connectors any luck or decision on the 740B replacements? I haven't really found a 1kV rated plug and socket I like as an alternate yet 

There is half a rocking horse turd on ePay France at the moment if it's any use, maybe worth asking if they have the other to go with it.

https://www.ebay.co.uk/itm/284233477471



David

The $325 AUD freight bill along with the $135 buy price is a little OTT Unfortunately the input box while it shares the same unobtanium connector shell as the output one it contains less pins so they cant be modded easily into the other side box/cable Not aware of anyone needing one having a quick search here and in my 740B thread.

325 Aussie Pesos to ship it?!?     It weighs 8 oz (225g) and I can literally hold one in my hand!  That's insane!  I'd think you should be able to ship the whole damned 740B for that kind of money!



-Pat

Are the connectors really unobtanium or just really expensive & only available in silly quantities?

As for the ePay listing, the sellers items have make offer and with a bit of communication I'm sure a more sensible shipping price could be agreed on. Of course it's not the one you need so a bit pointless.

This is a frequent problem with small/light items in the USA where sellers use USPS for shipping & only give the Priority option for international, which doesn't have a price rate below 1lb. Usually they will add First Class international if you ask.

David

[tggzzz]

Well I just got outbid on a 465B. I think I’m good on the “I’m not buying another 4xx scope again” comment  still

I've got an, ahem, "cosmetically good" 465b that I'm never going to get around to looking at. I'll let it escape go for a low price.

[Specmaster]

Well I just got outbid on a 465B. I think I’m good on the “I’m not buying another 4xx scope again” comment  still

That is purely temporary, you will fall of the wagon thats a dead cert. 

[bd139]

Well I just got outbid on a 465B. I think I’m good on the “I’m not buying another 4xx scope again” comment  still

I've got an, ahem, "cosmetically good" 465b that I'm never going to get around to looking at. I'll let it escape go for a low price.

Let me mull on that for a couple of days. I'm still trying to decide if it was fortune or misfortune that I didn't end up with one 

[factory]

eBay auction: #193997883829 looks very suspicious, right?

He is a bit aggressive in his conditions, and he has no feedback, so it could a bit dodgy. But if you get it cheap enough, might be worth a punt because you still have the eBay guarantee to protect you against it being fraudulent.

I don't think the ePay guarantee is worth the zeros & ones it's coded from, if you pay by a non-ePay controlled method such as bank transfer, which is a method commonly used in the EU (no Paypal requirements for their listings). Wonder if it will stay the same once ePay starts handling payments again?
The only way for that listing would be paying on collection and walking away if it's no good.

David

[factory]

Well I just got outbid on a 465B. I think I’m good on the “I’m not buying another 4xx scope again” comment  still

I've got an, ahem, "cosmetically good" 465b that I'm never going to get around to looking at. I'll let it escape go for a low price.

Let me mull on that for a couple of days. I'm still trying to decide if it was fortune or misfortune that I didn't end up with one 

Don't worry there is something Heathkit on there you may prefer instead. 

David

[bd139]

It's already on the watchlist 

[Specmaster]

gasoline is at about 7$ per gallon over here after the last tax hikes.
Intended to go up to 20$ per gallon if the green party wins ...

It's a similar price here, with around 2/3 of the price being tax in one form or another.

$6.74 USD per Gallon at the local Tesco here, over $7.50 at motorway services. (using current exchange rates and US gallon not imperial)

Yea, I realize I'm preaching to the choir concerning gas prices here vs the EU and UK. When I got my license in 1970 gas was about .28 USD/gallon. Everyone went nuts at the first fuel crisis in 1973 when it went to .50 USD/gallon. And when it hit $1.00 USD/gallon the world was going to end. 

The real tragedy was beer going from 23p a pint the year before I started university to £1.50 a decade later. One pound fifty went from the price of a good evening out (six pints and a bag of chips on the way home) to the price of a single pint, criminal!

I remember when I got my first car, I could buy exactly 3 imperial gallons for £1, now I cannot even buy 1 litre for £1 

[factory]

 

Nice box
I have a HP16058A fixture that was modified by it's previous owner, with some of the inserts. Back from when I did not know that the K2636 had Keithley-specific toleranced triaxial jacks, so that only the plugs you buy on their cables fit and dreamed of making my own triax connection cables.
When I bought the fixture on "offer a price" it was good, at least taking into account the additional triaxial jacks mounted to the modification. Little did I know...
Edit: looking at epay, the prices for these seem to have gone up. Feel a little better now having bought mine ~4 years ago
Just to rub it in, I could not even begin to think of using this until now...

Good day,

yes, these Triaxial leads and connectors are surely nice and they have their advantages in low-current-sensing and RF-sensitive applications.
But they are just a pain for those who do not need these benefits... Even the adapters are truly expensive.

Cheers,

THDplusN_bad

Is this one of the Triaxial BNC's that the matching leads are really expensive, or something easier to obtain?
It's on the back of the only item of Keithley TEA I have a 455 picoammeter, it went into storage yesterday along with the pair of Solartron voltmeters I haven't got leads for yet.




David

I may have such a connector in stock

I'm in no rush for one*, but would be interested in a connector to fit it. 
And I did find the connector I had, which was no use as it's another different looking version of what is fitted.


*my available TEA time will be severely restricted once I'm back at work on the 1st of April, when shielding ends.

David

I have a single hole panel mount 3 lug triax socket  available. do you have the matching plug?

I haven't got any triaxial plugs/leads, which is why I asked about the matching connector to fit the panel socket on the above Keithley (I'd prefer not to change it). For some unknown reason I thought I had one, but it turned out to be another variant of panel connector.
I'm not in any rush as I said before, there is more TEA here awaiting repair than I have available time and the pile just keeps getting bigger.

David

[Mr. Scram]

I not only remembered I have parts, but I was even able to find them. What's next, them actually working?

It turns out I didn't need level shifters in the first place.   

[factory]

Another meter page...

This one cleaned up quite nicely relative to how it arrived.


snip...

Gallery link: https://pmanning.smugmug.com/Electronics/HP-3460B-Digital-Voltmeter

-Pat

Bit late for me to add mine, page 3460 had been & gone while I was out helping clear rusty junk and remove dodgy shed wiring at a relatives place.
You'll have to make do with these that were collected on the way. 


Total spend £27.60

David

P.S. Under the sheet in the background is a lathe that was moved the previous weekend, unfortunately it needs a fair bit of work along with the mill/drill that we moved at the same time.

[tonyalbus]

Last week i tested that TES200 IC_Tester


I was told to test the (eprom programmer) TL866II Plus, so i did    
which can also test IC's and a lot more... and oyeah can programm eproms too

[AVGresponding]

Discord is running, and in the usual random directions

[dl6lr]

Here's some more eBay picks:



Think of the amount of magic smoke you could release with these bd:

https://www.ebay.co.uk/itm/2-x-Cisco-1150W-Power-Supplies-MPN-C3K-PWR-1150WAC-V01/294083750918

I have 3 PSU with 1kW output each, 5V/150A, 5V/15A, 2V/15A, 12V/5A. Power Factor Unifier Super-MITE-A. If anyone is interested to smoke up with these, drop me a note Shipping however will only be reasonable in Europe.

[tonyalbus]

Thanks for the offer...
I have 3 of those from COULD.. 5V 100A .. i put 3 of them in series...and turned the voltage down, so they have 13.8 in total.
i used that in my crazy CB days... could not trow them.. have them still.
needed to put timers in between, to switch them on.. 1 sec in between..
every time i switch them on.. the lights in my rooms went down 3 times in a row quickly    (if no timer.. the fues blow)
Big caps inside..
Cool.. nice offer...
i need to pass, but man... its some cool stuff.