Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 4329155 times)

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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55500 on: April 12, 2020, 05:29:38 pm »
Successful probe compensations for the Type CA plug-in.

First up was the P6017 probe. It has a conventional trimmer screw adjustment. It was a little over compensated but fell right into place.

Before



After




The P6000 probes are a funky design and even after RTFM it still took a while to figure out how to adjust them. But once figured out one was over compensated and another under compensated. Both finally adjusted perfectly. The 3rd P6000 is indeed open. Going to try to get it apart and either fix it or gut it and make it a X1 probe.



And finally. Another tube porn shot to get bd all flustered.  :-DD

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Online Saskia

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55501 on: April 12, 2020, 05:48:59 pm »
SOS: https://www.ebay.co.uk/itm/Tektronix-222PS-Oscilloscope-New-Batteries-Calibrated-Case-Excellent/324127770720

Clearly this should be purchased by med immediately and rescued from, I mean, wtf? Someone thinks its a Fluke or something?!?
  :scared:


Tempting but it looks like Saskia already has her eye on it so I'll let it go.

No, go ahead. Shipping, customs, etc will be a huge pain. If you want to bid on it, go ahead.
 

Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55502 on: April 12, 2020, 05:50:59 pm »
It didn't take long to figure out what was wrong with the 3rd P6000 probe. The center connection between item 1 and item 5 is burnt open. Gorillas at work.  :palm:

So I'll see if I can make it a X1 probe.

An old gray beard with an attitude.
 

Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55503 on: April 12, 2020, 05:52:44 pm »
SOS: https://www.ebay.co.uk/itm/Tektronix-222PS-Oscilloscope-New-Batteries-Calibrated-Case-Excellent/324127770720

Clearly this should be purchased by med immediately and rescued from, I mean, wtf? Someone thinks its a Fluke or something?!?
  :scared:


Tempting but it looks like Saskia already has her eye on it so I'll let it go.

No, go ahead. Shipping, customs, etc will be a huge pain. If you want to bid on it, go ahead.

OK. It's very tempting but I got other priorities at the moment but that could change in a flash.  :-DD
An old gray beard with an attitude.
 

Online BU508A

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55504 on: April 12, 2020, 05:54:07 pm »
Previously in the TEA forum: https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/msg2995954/#msg2995954

This time I'm presenting you the Keithley 155 Nulldetector Microvoltmeter.

Front and back side:


Battery check is looking good for the positive and the negative rail:


Looking at the main pcb, not very much to see. There isn't even an op-amp around:


And here again, same as with the Fluke 750A, some broken plastic spacers of the main switch:


Very nice looking input binding posts. I assume, the metal is CuTe:


Battery storage. The batteries itself are a little bit outdated. Replacement ordered.


And here is a little test with the DMM check plus from Mr. Malone at 5V:


Thank you for watching.

Here is the link to the manual:
https://www.tek.com/manual/keithley-model-155-null-detector-microvoltmeter-instruction-manual-29031d
“Chaos is found in greatest abundance wherever order is being sought. It always defeats order, because it is better organized.”            - Terry Pratchett -
 
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Offline Carl_Smith

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55505 on: April 12, 2020, 05:57:38 pm »

Look again; it's worse: EDLIN.  >:D

mnem

Oohh.. EDLIN.  I used it extensively on my first computer, a 4.77 MHz Compaq Portable.  DOS version 2.something.  I decided to google "EDLIN" to see if anyone on the net these days even remembers it's existance and I was suprised to find that Wikipedia says:

Quote
Although superseded in MS-DOS 5.0 and later by the full-screen MS-DOS Editor, and by Notepad in Microsoft Windows, it continues to be included in the 32-bit versions of current Microsoft operating systems.

Really? It's still in Windows?  Problem is that I don't have anything that runs 32 bit Windows.   :(

Online Saskia

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55506 on: April 12, 2020, 06:01:20 pm »
anything more comfy than vi, ed or sed is overrated and pure luxury.
 
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Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55507 on: April 12, 2020, 06:06:47 pm »
Yes I am a vi proponent as well. In fact I wrote a vi clone when I was at university. It got lost in the noise of the other thousand clones at the time. I invented a whole new editing buffer system that used memory mapped files with virtualised piece tables (before it was called that) over them. You could open a 1Gb text file on a 32mb sun box and edit it!
 
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Online BU508A

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55508 on: April 12, 2020, 06:15:19 pm »
+1 for vi  :-+

emacs: *blerk*

 >:D
“Chaos is found in greatest abundance wherever order is being sought. It always defeats order, because it is better organized.”            - Terry Pratchett -
 

Online mansaxel

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55509 on: April 12, 2020, 06:15:33 pm »

You ended up paying way more than I was prepared to pay for that lot, even though it's quite a haul. I was amazed at your fast fingers when you got outbid in the closing second there!

Great lot title though: "Things"

 :-DD

Yes. I was impressed with myself too. I did not think I'd make it. :-DD And I paid more than I originally intended. But, the haul looks promising, indeed. Proof, pudding, etc. I'll gloat properly if and when it turns out well.  ;)


(You wouldn't have recognised me in the list of bidders though. I'm "mpj001" there.)

Now I do...

Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55510 on: April 12, 2020, 06:30:12 pm »
My other probe rack is full so these guys mounted in another location but readily accessible.

An old gray beard with an attitude.
 
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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55511 on: April 12, 2020, 06:36:06 pm »

Look again; it's worse: EDLIN.  >:D

mnem

Oohh.. EDLIN.  I used it extensively on my first computer, a 4.77 MHz Compaq Portable.  DOS version 2.something.  I decided to google "EDLIN" to see if anyone on the net these days even remembers it's existance and I was suprised to find that Wikipedia says:

Quote
Although superseded in MS-DOS 5.0 and later by the full-screen MS-DOS Editor, and by Notepad in Microsoft Windows, it continues to be included in the 32-bit versions of current Microsoft operating systems.

Really? It's still in Windows?  Problem is that I don't have anything that runs 32 bit Windows.   :(
I know.  >:D It was Saskia's horror story of trying to run XP in a VM on a modern machine which made me think of that.

Imagine having to write FOR a modern machine while using the equivalent of THIS:   

bd, how 'bout THAT for "a old ThinkPad"...?
  ;)

mnem
There's a special level of Hell reserved just for me.  >:D
 

Online Saskia

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55512 on: April 12, 2020, 06:39:54 pm »
now I am thinkin of running DOS on a VM on a Xeon.

Anyway, I have a TP600 here which is still operational.
 
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55513 on: April 12, 2020, 06:40:05 pm »
anything more comfy than vi, ed or sed is overrated and pure luxury.

EDITOR WARS! YES!!!

I mostly edit files in vi or ed, depending on terminal. But, I'm an infidel with an Aquamacs buffer open, especially for editing LaTeX source. The Aarhus university macro package for LaTeX is so good I'm prepared to cheat.

I used to edit the zone file for .SE in FreeBSD nvi. That was painful, and my colleague who was using emacs for same had a considerably easier time, at least opening the file. But, DNS zone files, being line oriented, are much easier with the line paradigm in vi than the region junk in emacs. In the end, we removed the editor step and poked at entries in a database instead, using a Perl program called "chk2000.pl", because it evolved from a very, very ugly shell script called "chk" that I'd written, to check whether name servers were answering properly before delegating.

I'm also, in the spirit of pipelines and jaw-dropping oneliners, quite fond of the in-place editing functions invoked with "sed -i -e" and its Perl equivalent. That's one of the very few places I'm allowing myself a spoon of the GNU syntactical sugar. For most other functions, my finger macros are tuned to 1990s "nvi" or similar.

Finally, I think we all should join in condemning the perversity that is "nano". It's the first thing I'm replacing with "ed" and "nvi" (not "vim", mind you) when I get my hands on a Linux system. The BSD computers, as usual, come with the right set of tools from the start, of course.

Postscript: We should not forget "awk". The things you can do in it. 'mazing. No less.

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55514 on: April 12, 2020, 06:46:49 pm »
the nastiest thing I did was to use sed and awk in makefiles to define targets on the fly (i.e. during execution) depending on variables and runtime results.
This was in 1998 ... The only thing I liked more was the editor ...what was its name ...kdb ...
 

Online mansaxel

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55515 on: April 12, 2020, 06:48:47 pm »
now I am thinkin of running DOS on a VM on a Xeon.

Anyway, I have a TP600 here which is still operational.

I've got a 1999 vintage Thinkpad 380Z with FreeDOS and OpenBSD. I'm trying to get a Niros / Ericsson radio programming tool to work. So far, no luck. I keep thinking I should swap FreeDOS for real MS-DOS 6.22 and try a bit harder.

Also, I should get something a bit more modern to run 10 on. A Toughbook, preferably.

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55516 on: April 12, 2020, 06:50:41 pm »
the nastiest thing I did was to use sed and awk in makefiles to define targets on the fly (i.e. during execution) depending on variables and runtime results.
This was in 1998 ... The only thing I liked more was the editor ...what was its name ...kdb ...

I -- without having seen the code, keep thinking it probably was better than GNU Autoconf. That it was faster goes without saying.

Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55517 on: April 12, 2020, 06:53:22 pm »
Got to love awk. I've got a 500 line piece of shit I wrote in a day nearly 10 years ago still in production at the moment. The brains were awk tied together with named pipes, socat, openssh and psql. This was a hack job that was MacGuyver'ed up because the traditional "patterns team" (GOF / Enterprise Integrations Patterns lot) had managed to fuck up the project for 3 months solid and missed delivery. Two attempts have been made to replace it but failed so far  :-DD. All it does is suck up some valuations off a remote sftp box once a day, parse them, do some aggregate calculations and stick them in a postgres database  :palm: :palm: :palm: :palm:. socat is used to push a notification to the rest of the system to do it's shit once the data is there. Paid a consultant a fuck load of money for the last AWS attempt and he produced some rube goldberg machine in AWS Lambda and SQS and stormed off after getting all pissy that he couldn't get it to run reliably. My jobby even has ansible scripts to push it out to an EC2 instance now....
« Last Edit: April 12, 2020, 06:55:35 pm by bd139 »
 

Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55518 on: April 12, 2020, 06:57:35 pm »
the nastiest thing I did was to use sed and awk in makefiles to define targets on the fly (i.e. during execution) depending on variables and runtime results.
This was in 1998 ... The only thing I liked more was the editor ...what was its name ...kdb ...

I -- without having seen the code, keep thinking it probably was better than GNU Autoconf. That it was faster goes without saying.

Anything GNU like that is a ball ache. Much prefer BSD userland and tooling full stop which is slowly working on eliminating turdy GNU shit. FreeBSD is about right. LLVM, ZFS, tools with decent manpages, no GNU info in sight, no autoconf. I'd mess my pants with excitement if I could get someone to hire me to use it. Unfortunately it's all Linux nobbling.

Edit: I must say I am slightly motivated by being disgruntled. May go and throw up a FreeBSD VM now  :-DD
« Last Edit: April 12, 2020, 07:01:06 pm by bd139 »
 

Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55519 on: April 12, 2020, 07:15:23 pm »
I am surrounded by belly aching and bitching and moaning software engineers.  :horse: ::) ::) :-DD I think I'll go watch TV.  :popcorn:
An old gray beard with an attitude.
 
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Online tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55520 on: April 12, 2020, 07:19:12 pm »
anything more comfy than vi, ed or sed is overrated and pure luxury.

Pah! Luxury.
 
Try using 5 channel paper tape running through teleprinters at 5cps.

You think before you start editing
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
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Offline Neomys Sapiens

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55521 on: April 12, 2020, 07:20:27 pm »
anything more comfy than vi, ed or sed is overrated and pure luxury.
Back when a PC was a PC and ran DOS, Norton Editor ruled. Unfortunately, that was NOT the world I was living in. As I was associated with the Siemens structure, we ran CPM86 and Concurrent CPM86 until a time when our so-called PG (Programmiergeraet) was already a Pentium with VGA display. You had - at least in the Siemens distribution - the choice between ED (a wicked crutch of a line editor) and Wordstar, whose command codes did haunt me well into DOS times.
After the Simatic environment got transferred to DOS, it became better.
For a time I liked a thing called CryptEdit, which could - guess what -. also encrypt files. I used it until the first inadvertent activation of this capability. It got unliked and PURGED.

Nowadays I'm content with VEdit, UltraEdit, Notepad++, because one of them is what I mostly find in place, with Notepad++ becoming more and more widely used.

Integrated hex editor, regex search and replace, large file and network support are useful things, as is an easy interface towards colour marking and highlighting outside of language support. Imagine checking and processing log files, simulation data etc.

 

Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55522 on: April 12, 2020, 07:21:14 pm »
I am surrounded by belly aching and bitching and moaning software engineers.  :horse: ::) ::) :-DD I think I'll go watch TV.  :popcorn:

 :-DD apologies. Unfortunately our jobs lead to mental illness  :-DD :-DD

 
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Offline Neomys Sapiens

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55523 on: April 12, 2020, 07:24:02 pm »
My other probe rack is full so these guys mounted in another location but readily accessible.


Dang about the lost No.4. But you'll get one.
 

Offline Neomys Sapiens

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55524 on: April 12, 2020, 07:26:55 pm »
the nastiest thing I did was to use sed and awk in makefiles to define targets on the fly (i.e. during execution) depending on variables and runtime results.
This was in 1998 ... The only thing I liked more was the editor ...what was its name ...kdb ...
This is about as evil as APL.
 


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