Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 3445778 times)

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Offline SingedFingers

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #250 on: February 13, 2017, 08:01:50 pm »
I'm well in now. A tek 465B corpse I got rid of over a year ago with a working unit came back again. Have distributed some of its organs to the worthy.

And then another Thurlby PL310 accidentally got purchased. That means I can get rid of the shonky Heath supply I have been using for a couple of years.
 

Offline artag

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #251 on: February 13, 2017, 08:45:52 pm »

I did look at an R&S HM8118 a while back but had to resist because of the price. The problem with really large old equipment is I have a finite amount of space in my lab/office...

This is a problem often encountered when you have too few pieces of equipment.

Once you achieve zen mastery of the lifestyle, you'll realise that there's always room for Just One More.
 
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Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #252 on: February 13, 2017, 09:21:32 pm »
A tek 465B corpse I got rid of over a year ago with a working unit came back again. Have distributed some of its organs to the worthy.

People buy corpses to turn them into mules. Just check on the selling prices of some knobs and pots/switches/clarostats located near the corner. But I'm sure you know that :)

Now, should I sell that working-but-spare CRT :)
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 SingedFingers

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #253 on: February 13, 2017, 10:29:56 pm »
A tek 465B corpse I got rid of over a year ago with a working unit came back again. Have distributed some of its organs to the worthy.

People buy corpses to turn them into mules. Just check on the selling prices of some knobs and pots/switches/clarostats located near the corner. But I'm sure you know that :)

Now, should I sell that working-but-spare CRT :)

What knobs? (flogged them, the EHT multiplier and the feet already ;) ). The delay sweep pot is on my LD sine generator breadboard as is one of the nice clarostat pots.



Annoyingly when I had this before I had two limping 465Bs and I had to either spend a ton of cash to get parts shipped from Sphere or sacrifice one to save the other. Shame really as this was the closest one to BER as the PSU caps and bridge rectifiers were shot as well has some of the attenuator modules.

Edit: CRT is good if anyone wants it. Some porn:

« Last Edit: February 13, 2017, 10:43:38 pm by SingedFingers »
 

Offline Cubdriver

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #254 on: February 14, 2017, 07:46:01 am »
SF, you could cross post that pic in the ceramic crt fabrication video thread!  Amazing the engineering that went into drawing a green line on a screen, huh?

-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 

Offline Cubdriver

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #255 on: February 14, 2017, 07:52:28 am »
And there's probably someone somewhere with a 465B that looks like it went through the war who would want the front panel - it looks like it's in excellent condition.  That's one from the era when Tektronix put the markings directly in the anodizing, so short of a reading it away they're on there for good.

-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 

Offline SingedFingers

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #256 on: February 14, 2017, 08:43:46 am »
I'll have a look for that thread and post it.

The panel is immaculate as it had the cover on it when I got it. Unfortunately the rest of the unit was in a right state as the pevious owner left it in a shed for a decade. The document/probe pocket had mushrooms in it to give you an idea.
 

Offline Cubdriver

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #257 on: February 14, 2017, 08:59:31 am »
I'll have a look for that thread and post it.

The panel is immaculate as it had the cover on it when I got it. Unfortunately the rest of the unit was in a right state as the pevious owner left it in a shed for a decade. The document/probe pocket had mushrooms in it to give you an idea.

Holy crap!!  Scopes should not have mushrooms!  Ugh!

-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 

Offline R005T3r

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #258 on: February 14, 2017, 10:06:07 am »
All started at high school: I just couldn't resist to hear the professor lecturing, so I picked up an oscilloscope manual and started reading about it. It was a Hameg HM-303... It turned out to be very addictive, since I've impressed the professor when the time came (and avoided a bad mark  :phew:)
 

Offline xrunner

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #259 on: February 14, 2017, 01:32:04 pm »
All started at high school: I just couldn't resist to hear the professor lecturing, so I picked up an oscilloscope manual and started reading about it...

You actually read the manual for an oscilloscope? Did anyone see you doing that? Be very careful about doing that in the open. You will likely be ostracized by the rest of society when the word gets out. Once people find out that you read manuals you will lose many friends, except the ones that realize you can repair their electronics (that's the only reason they will keep you on as a "friend").

You are a very abnormal human being - like me.  :P
I am a Test Equipment Addict (TEA) - by virtue of this forum signature, I have now faced my addiction
 

Offline R005T3r

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #260 on: February 14, 2017, 07:36:38 pm »
Not to mention that all the repairs are free...

I know, you have to be careful in public... And I tell you from experience that programming in public isn't the best option... Especially in boring situations...
 

Offline SingedFingers

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #261 on: February 14, 2017, 08:12:53 pm »
Day job is software engineering. Hell yes to that.
 

Offline VK5RC

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #262 on: February 15, 2017, 09:35:16 am »
I just saw the ad for the Fluke DM284  -  I don't have a nice 'black' DMM ..........mmmmmmmm.............
Whoah! Watch where that landed we might need it later.
 

Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #263 on: February 15, 2017, 04:15:09 pm »
Oh dear. Oh dear, oh dear. Today's haul. As received and turned on, without checking.

I was going to crop the message in the background (a Christmas present from my daughter), but then somehow it just seems too apposite.
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".
Having fun doing more, with less
 
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Offline artag

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #264 on: February 15, 2017, 04:35:47 pm »
Those solartron connectors are buggers.
For what it's worth, they're Fischer 104 series.
 

Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #265 on: February 15, 2017, 04:51:25 pm »
Those solartron connectors are buggers.
For what it's worth, they're Fischer 104 series.

So I'm coming to understand. I expect I'll make a homebrew cable sometime, once I've found some 1.3mm connector inserts and out how to drill holes in PTFE (or similar?). But before that I'm going to have a look inside to check on batteries, capacitors and so on.
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".
Having fun doing more, with less
 

Offline mtdoc

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #266 on: February 17, 2017, 12:39:32 am »
I fell off the wagon today and bought a GwInstek GPD-3303S power supply.  Prices on eBay have come down with a flood of these from the ITT auctions.

I just counted and realized I own 10 working PSUs - mostly vintage HP and PD supplies -  and 1 broken TTI PSU I've been meaning to fix.

Clearly I have no need for one more.  But it will be my first programmable supply! That's how I justified it. ;D

But now I've already caught myself looking at vintage HP supplies again on eBay.

One day at a time...
 

Offline xrunner

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #267 on: February 17, 2017, 12:52:56 am »
One day at a time...

Indeed, that's how we all cope in here.  :)
I am a Test Equipment Addict (TEA) - by virtue of this forum signature, I have now faced my addiction
 

Offline bitseeker

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #268 on: February 17, 2017, 01:05:11 am »
I fell off the wagon today and bought a GwInstek GPD-3303S power supply.  Prices on eBay have come down with a flood of these from the ITT auctions.

There are two versions of this model. If yours is the one where the binding posts for channel 3 are further away from channel 1 than channel 1 is from channel 2, then you're probably OK. If all the binding posts are the same distance apart from one another, you may have an overshoot issue with channel 3. There are a couple of threads about it.

Edit: Just saw your post in the "scores" thread. It looks like you got one of the OK ones. You might want to double-check it before connecting anything voltage sensitive to channel 3.

Quote
I just counted and realized I own 10 working PSUs - mostly vintage HP and PD supplies

What a coincidence. Same here, along with a couple of programmable HPs that need some TLC.

Quote
One day at a time...

Indeed. :-+
« Last Edit: February 17, 2017, 01:12:54 am by bitseeker »
I TEA.
 

Offline mtdoc

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #269 on: February 17, 2017, 03:56:30 am »
I fell off the wagon today and bought a GwInstek GPD-3303S power supply.  Prices on eBay have come down with a flood of these from the ITT auctions.

There are two versions of this model. If yours is the one where the binding posts for channel 3 are further away from channel 1 than channel 1 is from channel 2, then you're probably OK. If all the binding posts are the same distance apart from one another, you may have an overshoot issue with channel 3. There are a couple of threads about it.

Edit: Just saw your post in the "scores" thread. It looks like you got one of the OK ones. You might want to double-check it before connecting anything voltage sensitive to channel 3.


Thanks. I looked at those threads. That's one more reason I'm glad I bought a specific unit (versus one from sellers with multiple units).  I will check all the outputs though.

One of the reasons I like this supply is that someone has made the service manual available for download. It is includes schematics (rare for modern test equipment) and the full calibration procedure which I will likely go through.
 

Offline TiN

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #270 on: February 17, 2017, 04:14:23 am »
Received new package today... Just 500 gramms...what that could be?
YouTube | Metrology IRC Chat room | Live-cam | Share T&M documentation? Upload! No MB limit, firmwares, photos.
 

Offline lowimpedance

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #271 on: February 17, 2017, 04:18:32 am »
Received new package today... Just 500 gramms...what that could be?
I'll bet you cannot RESIST opening it ........... no!.
The odd multimeter or 2 or 3 or 4...or........can't remember !.
 

Online tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #272 on: February 17, 2017, 04:28:27 am »
Received new package today... Just 500 gramms...what that could be?
Some standard from a member maybe ?  :-/O
Avid Rabid Hobbyist
 

Offline TiN

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #273 on: February 17, 2017, 05:01:27 am »
I resistively opened it. Nop, not a standard, something much more fun!  ;D

Hint: it will involve need of oscilloscope   :bullshit:
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Offline bitseeker

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #274 on: February 17, 2017, 05:10:17 am »
Oh, man, TiN. You know we're already on the edge. Teasing us is just cruel and unusual punishment. :-DD
I TEA.
 


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