Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 1443760 times)

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Online tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29750 on: April 20, 2019, 05:42:19 am »
*Takes a bow and put on best Elvis grin and southern drawl* "Spank you! Spank you vurry mu-u-uch!!!"   :-DD

Yeah, I know it'll make a good article... but right now it's just a collection of pictures. I want to get a chance to finish the project and show it installed, but I've been a bit busy this week with the 454 project, fixing musical instruments and being overrun with the little dragonlings.  ;)

I'll add it to the big 2465 thread when and if I get a chance to add some narrative.   ;D

mnem
My house looks like I'm losing at Jumanji.
I'm glad I inspired you to right a booty fab wrong but when you do the write up keep my name out of it.  :-DD

No.   ;)  And I've already saved the picture of that booty fab, so you cannae deny it.  :-DD

mnem
You will figure prominently in my memoirs. >:D
:-DD Poor Med.

Twas great repair mnem and done in proper MacGyver fashion and well enough with the gear at hand to bring a tear to this tight Scotsmans eye.  :'( (happy tears)
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29751 on: April 20, 2019, 05:51:52 am »
Accepted counter offer. I now own a 3310A  :palm:

Excellent!  It's a nice little unit.





Now you need a 'B' model, too.   >:D >:D

(And more counters, obviously.  Two is nowhere near enough for a proper quorum.

-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29752 on: April 20, 2019, 05:59:20 am »
Oh now that's sexy. Money well spent  :-+

Agree with counters. Thinking I need a 5316A with channel C (1.3GHz) option and OCXO and another HP one with nixies in it, same form factor as the 400E and 3310A i.e. 5221A
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29753 on: April 20, 2019, 06:17:11 am »
*Takes a bow and put on best Elvis grin and southern drawl* "Spank you! Spank you vurry mu-u-uch!!!"   :-DD

Yeah, I know it'll make a good article... but right now it's just a collection of pictures. I want to get a chance to finish the project and show it installed, but I've been a bit busy this week with the 454 project, fixing musical instruments and being overrun with the little dragonlings.  ;)

I'll add it to the big 2465 thread when and if I get a chance to add some narrative.   ;D

mnem
My house looks like I'm losing at Jumanji.
I'm glad I inspired you to right a booty fab wrong but when you do the write up keep my name out of it.  :-DD

No.   ;)  And I've already saved the picture of that booty fab, so you cannae deny it.  :-DD

mnem
You will figure prominently in my memoirs. >:D

I hate you and Paul Simon too.  :P :P :P :D
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29754 on: April 20, 2019, 06:22:08 am »
A little preview...as I learn how to set it up from the manual. It's a wee bit more complicated than the portable 'scopes I'm used to.  :o
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29755 on: April 20, 2019, 06:25:47 am »
Nah, it will be 2nd nature in no time.  :-+ Think of it as 2 scopes and 1 screen.
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29756 on: April 20, 2019, 06:29:46 am »
I'll figger it out eventually  :-DD

I'm not entirely sure yet how the delaying timebase and the main timebase interact...
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29757 on: April 20, 2019, 06:30:54 am »
I'll figger it out eventually  :-DD

I'm not entirely sure yet how the delaying timebase and the main timebase interact...
:-DD
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29758 on: April 20, 2019, 06:31:14 am »
Accepted counter offer. I now own a 3310A  :palm:

Excellent!  It's a nice little unit.

...

Now you need a 'B' model, too.   >:D >:D

(And more counters, obviously.  Two is nowhere near enough for a proper quorum.

-Pat

I also have one of each. For work I am doing they have some very useful features:

1. Excellent range on the VCO with the 0 to 10V input.

2. Multiple output ranges that drive deep into periods on the order of a day.

3. Nice power. Watch out for the 50 ohm output resistor. I had to replace the one in mine.

4. DC offset control.

Altogether this allows for a 3310A/B to act as a simulator for some kind of voltage or current controlled transducer, making simulation of control systems convenient.

I had to replace one of the power supply capacitors also.
 
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29759 on: April 20, 2019, 08:18:22 am »
I'll figger it out eventually  :-DD

I'm not entirely sure yet how the delaying timebase and the main timebase interact...
:-DD
You haven't lived ! Have fun.

I figured it out by inspection. Didn't even need the manual.  :-DD I think the 7B92A timebase may need a bit of work, but other than that this thing works very well. I've got another 7A26 vertical amplifier on the way, so I'll have the option of 4 real channels, something the 2465B can't do since channels 3 and 4 on that 'scope only have two attenuator settings and are really only suitable for throwing up something like a clock signal.

The 7B15 timebase is the 1 GHz delaying timebase designed for the 7104. Since the guy had one available, I figured why not get started since I do want a 7104.   >:D
« Last Edit: April 20, 2019, 08:20:07 am by 0culus »
 
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Offline Neomys Sapiens

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29760 on: April 20, 2019, 08:37:12 am »
I'll figger it out eventually  :-DD

I'm not entirely sure yet how the delaying timebase and the main timebase interact...
:-DD
You haven't lived ! Have fun.

I figured it out by inspection. Didn't even need the manual.  :-DD I think the 7B92A timebase may need a bit of work, but other than that this thing works very well. I've got another 7A26 vertical amplifier on the way, so I'll have the option of 4 real channels, something the 2465B can't do since channels 3 and 4 on that 'scope only have two attenuator settings and are really only suitable for throwing up something like a clock signal.

The 7B15 timebase is the 1 GHz delaying timebase designed for the 7104. Since the guy had one available, I figured why not get started since I do want a 7104.   >:D
Come on, you can't leave the 7904 without it's own proper timebase. Sad, empty hulks of 7xxx standing around, waiting to receive the only timebase in house?
« Last Edit: April 20, 2019, 12:39:44 pm by Neomys Sapiens »
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29761 on: April 20, 2019, 08:39:21 am »
The 7B92A is the correct timebase. Now that I have a mainframe, it will be a lot easier to acquire plugins. :)
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29762 on: April 20, 2019, 08:53:54 am »
Gotta have a little POS in there for @bitseeker's benefit. ;)
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29763 on: April 20, 2019, 08:59:30 am »
*Takes a bow and put on best Elvis grin and southern drawl* "Spank you! Spank you vurry mu-u-uch!!!"   :-DD

Yeah, I know it'll make a good article... but right now it's just a collection of pictures. I want to get a chance to finish the project and show it installed, but I've been a bit busy this week with the 454 project, fixing musical instruments and being overrun with the little dragonlings.  ;)

I'll add it to the big 2465 thread when and if I get a chance to add some narrative.   ;D

mnem
My house looks like I'm losing at Jumanji.
I'm glad I inspired you to right a booty fab wrong but when you do the write up keep my name out of it.  :-DD
No.   ;)  And I've already saved the picture of that booty fab, so you cannae deny it.  :-DD

mnem
You will figure prominently in my memoirs. >:D
I hate you and Paul Simon too.  :P :P :P :D

Then we're both doing something right.  :-DD

mnem
 
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Offline wch

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29764 on: April 20, 2019, 09:37:28 am »
Before I ask I know this is a  RPN vs =  question but here goes...

In the stack of equipment I tested this week are a TDS420A and 2246. I know I have enough, actually, more than enough, scopes. But, hey, I can probably buy either one for roughly 100USD, I know they both work, and, well, TEAS.

The TDS420A is pretty cool but the service manual doesn't appear to have schematics, so repair is of the swapping-boards sort. The 2246 is the low bandwidth sibling to the 2465 I have on my bench now. It does appear to be repairable, at least compared to the TDS420A. 

*sigh*  Typing that paragraph, I realize this is apple to bricks.  And that I am leaning toward the TDS420A mostly because I don't have anything quite like it. After all, I don't need another oscilloscope, so I should buy the most interesting one.  Nevermind.   :-DD

Now, a 53310A?  I definitely need one of those. That I could use.   ;D
I would not recommend going for the TDS420. You don't get much for it except the TekProbe-interface. And Tek had a learning phase there: from the TDS-3xx (rotten) on to the mediocre 4xx's and then coming to grips with it.
I have never worked with a 5xx, but as some SW solution seem to apply both to the 5xx and 6xx series they should be ok. I have a TDS-644 and that is where they make sense and fun.
It is not a CRO but a raster display, as you can see from the VGA output. So there is no reason to be content with a monochrome one. Ok, it has 4 channels, but the aquisition performance is the same as the 2430. And when you follow the links on Tek-Wiki, you will read that the early 4xx FW versions were lacking some functions.
And I would not go for the models which 'share' aquisition rate. Except the x8xs maybe, where overall performance is sufficient again when in 4 channel mode.

All true. Plus I very rarely buy test equipment for which schematics aren't available.

I wasn't interested but then I spent a couple of hours looking at the documentation and got to hmmm... I am kinda curious, it's cheap, I wonder what I can do with it?  :palm:

The 2246 is easier to pass on because I have a 2465 on my bench. 

The final rationalization is, of course I can get my money back out of it as long as I don't let the smoke out and I never do that!   :-DD
Ham radio, the TEA gateway drug: just say no to HF
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29765 on: April 20, 2019, 09:47:56 am »
https://youtu.be/Gn_-z-noVGs

And now I've finally got a minute to post some pics... I went and did it just to prove I wasn't just blowing smoke up your arse.  >:D

As always... the fabricobbling comes easy; its documenting shit that makes it take 3 times as long.  :-DD

For now I'm just going to leave this here with the descriptions on the photos... it's late & I'm tired, and I have the kids all over me like ferrets on crack until Monday. Oh, and a road trip to Louisiana in there somewhere I need to rest up for...  :scared:

That's some fab fabbing, mnem. Added to POI.
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29766 on: April 20, 2019, 09:51:29 am »
And now I've finally got a minute to post some pics... I went and did it just to prove I wasn't just blowing smoke up your arse.  >:D

Yup.

But that is sufficiently interesting and valuable to other people that it is worth giving it a proper title in a thread of its own. As it is, buried in message 29k of (probably) >50k, nobody will find it again.
Nah, bitseeker will add it to the POI's.

Yep, did it. The work is worthy of its own thread, though, to benefit a broader audience. No harm in cross posting.
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29767 on: April 20, 2019, 09:53:57 am »
Much as having a Calculator on the desk is 'nice' I have a phone with a nice app/scientific Calc and so does my PC  :-// Bench Real Estate is hard to find why add more clutter? My original Uni used Sharp might have to be found and sold seems some idiot might want one  :palm: eBay auction: #282979974302



I have one of those. I think it got a bit bent out of shape during a move many moons ago. Not sure where it is now. :'(
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29768 on: April 20, 2019, 09:54:06 am »
https://youtu.be/Gn_-z-noVGs

And now I've finally got a minute to post some pics... I went and did it just to prove I wasn't just blowing smoke up your arse.  >:D

As always... the fabricobbling comes easy; its documenting shit that makes it take 3 times as long.  :-DD

For now I'm just going to leave this here with the descriptions on the photos... it's late & I'm tired, and I have the kids all over me like ferrets on crack until Monday. Oh, and a road trip to Louisiana in there somewhere I need to rest up for...  :scared:

That's some fab fabbing, mnem. Added to POI.

That is a nice piece of work, mnem! Going back and looking at the photo series now.  Good luck with the ferrets, er, kids.  :-DD
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29769 on: April 20, 2019, 09:58:35 am »
Can someone please persuade me I need an HP 3310A and an 5316A  :-DD

You need an HP 3310A and a 5316A.

(Was that too much?)

bd, I have one of each, so you're behind. Hurry up, man!

(Was that too much?) :-DD

Are you sure you want a 3310A and not a 3310B? Actually, just get both.
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29770 on: April 20, 2019, 10:13:35 am »
Can someone please persuade me I need an HP 3310A and an 5316A  :-DD

Made a low ish offer on the 5316A but was countered too high.  If it had C channel I might pounce but going to skip it.

Yeah, mine doesn't have the C channel. But I got it at a good price, so...

Quote
3310A looked at schematic and will hold out for a 3312A. Slightly better!

3312A is better, but the 10 goes better with my other HP gear of that era.
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29771 on: April 20, 2019, 10:20:09 am »
Can someone please persuade me I need an HP 3310A and an 5316A  :-DD

You need an HP 3310A.



<edit to add - you should get an HP 3310 B, too -
collect the whole set!>

Yep, see bd!

I've been keeping an eye out for a 3310B, but they've been selling for too much $$$ lately.
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29772 on: April 20, 2019, 10:24:07 am »
Accepted counter offer. I now own a 3310A  :palm:

Well, now that was fast. You mean now I have to read 5 pages before I can even reply, lest I end up out of date like this? Sheesh! ;D
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29773 on: April 20, 2019, 10:35:46 am »
Gotta have a little POS in there for @bitseeker's benefit. ;)

Mine? Maybe you meant med, who worked at IBM?
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #29774 on: April 20, 2019, 10:38:28 am »
Accepted counter offer. I now own a 3310A  :palm:

Excellent!  It's a nice little unit.



Also added to POI. :-+

Oof! I'm racking up a monologue, again.
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