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Test Equipment Anonymous (TEA) group therapy thread

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Berni:
Yeah im grateful its just a PFC problem as i would not want to troubleshoot a complex issue inside the rest of it.

Acording to the label this is a:
Yamanashi Kyosai Denki Ltd.
Model TE-11

So its a Japanese power supply, at least they use Nippon Chemicon caps in it.

Actually all of this thing is made in Japan and the boards inside say "Copyright 1993 Sony/Tektronix". The B/W CRT is of course all Sony.

Its a lovely bit of gear so well worth the effort to fix it with its 1GS/s and 4MB of memory that can be segmented and assembled into even longer sequences or generate 8bit Parallel data out the back of it.

mnementh:

--- Quote from: bd139 on June 03, 2018, 09:18:16 am ---That’s a perfect quote that sums it up well.

My mantra is about promoting managing complexity along with features and requirements. I am saying I told you so a lot. This is slowly turning into credibility as things go wrong. That’s what software companies look like inside. A giant rug which had dead bodies piled up under it.

On the outside it’s a happy shiny facade of perfection because it’s cheap to pretend.

Anyone want to give me an EE job? :D

--- End quote ---




mnem
Alternately:

djos:

--- Quote from: bd139 on June 03, 2018, 07:35:21 am ---They’re both sampling scopes. Real time ones are just faster.

Sampling scopes usually use reconstruction ie they pick samples as quick as possible not necessarily on the same wave cycle to sample say a 20GHz signal. This allows you to build an approximation of a very fast signal if it is repetitive.  Real time ones have stupid fast ADCs and ungodly trickery so they actually sample near the full rate.

--- End quote ---

So does a digital RTO normally have the ability to capture and review like a normal DSO?

bd139:

--- Quote from: mnementh on June 03, 2018, 09:39:01 pm ---
--- Quote from: bd139 on June 03, 2018, 09:18:16 am ---That’s a perfect quote that sums it up well.

My mantra is about promoting managing complexity along with features and requirements. I am saying I told you so a lot. This is slowly turning into credibility as things go wrong. That’s what software companies look like inside. A giant rug which had dead bodies piled up under it.

On the outside it’s a happy shiny facade of perfection because it’s cheap to pretend.

Anyone want to give me an EE job? :D

--- End quote ---

mnem
Alternately:


--- End quote ---

Snipped images. Very true.

This essay always sticks in my mind: https://www.stilldrinking.org/programming-sucks


--- Quote from: djos on June 03, 2018, 10:19:27 pm ---
--- Quote from: bd139 on June 03, 2018, 07:35:21 am ---They’re both sampling scopes. Real time ones are just faster.

Sampling scopes usually use reconstruction ie they pick samples as quick as possible not necessarily on the same wave cycle to sample say a 20GHz signal. This allows you to build an approximation of a very fast signal if it is repetitive.  Real time ones have stupid fast ADCs and ungodly trickery so they actually sample near the full rate.

--- End quote ---

So does a digital RTO normally have the ability to capture and review like a normal DSO?

--- End quote ---

Yep. Disclaimer. Only used a very old HP/Agilent unit. Can't comment on new ones but I assume they haven't got any worse as they got faster and more expensive :)

I had to drive one and a modulation domain analyser with 16-bit Visual Basic 4 and HP-IB. As much fun as arse cancer that was.

Honestly I don't know why people bother at those frequencies. I can't think of a single application they can't solve cheaper than an expensive magic scope.

mnementh:
Oh, that is positively delicious.

I had my time as a youth... back when my brain was still pliant and stretchy like Silly Putty and I could wrap it around such things as nested arrays and hashes and the like... I did some programming in BBX2 and tried to translate that to C++ and tinkered with Python LISP (Python was a later relapse in my 30s) and after a few weeks (was it months?) where the only way I could sleep was to get stoned out of my gourd I eventually wound up stranded in a dry spell and tried to drink the code away...

I had my epiphany in a bathroom stall at a Starbuck's after being politely asked to leave for conspicuously pouring gin in my iced Frappucino and yelling at another patron in line for jostling my arm and almost making me spill it; I dashed away just in time to empty the contents of my stomach on and around the toilet. I realized that I was a few nested parens away from just the sort of madness your author distills perfectly here:


--- Quote from: stilldrinking.org/programming-sucks --- Vast chains of abstract conditions and requirements have to be picked through to discover things like missing commas. Doing this all day leaves you in a state of mild aphasia as you look at people’s faces while they’re speaking and you don’t know they’ve finished because there’s no semicolon.

 Eventually every programmer wakes up and before they're fully conscious they see their whole world and every relationship in it as chunks of code, and they trade stories about it as if sleepiness triggering acid trips is a normal thing that happens to people. This is a world where people eschew sex to write a programming language for orangutans.

--- End quote ---

I have LITERALLY been this and laughed about it to my girlfriend who got me into programming; she was trouble, I wanted to taste that kind of trouble (and her toes) and she had the best weed; things just took a 40/20 downward spiral from there. When I came to my senses in that bathroom stall, I realized she'd already moved on to another victim, and I was either going to become the freak I saw in the mirror or more likely, WISH I was halfway good enough to be that creepy and get away with it. Knowing that I was fundamentally math-deficient, I decided to go sober up over breakfast at Waffle House and the rest is history.

Not sure if I was lucky or just stupid...


mnem
I took the red pill AND the blue pill. Now we are unanimous.

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