Author Topic: 1973 military oscilloscope porn  (Read 5158 times)

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Offline kallisti5

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1973 military oscilloscope porn
« on: January 15, 2013, 12:37:18 am »
I took this picture to record some component info... it ended up pretty pornographic.  They don't build'em like they used to!

 

Offline FenderBender

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Re: 1973 military oscilloscope porn
« Reply #1 on: January 15, 2013, 01:22:59 am »
Wasn't even alive when this was manufacturered but goddamn I love well built vintage equipment. Awesome.

What scope? HP 17--?
« Last Edit: January 15, 2013, 01:31:07 am by FenderBender »
 

Offline GeoffS

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Re: 1973 military oscilloscope porn
« Reply #2 on: January 15, 2013, 01:38:21 am »
Reminds me of when I did my electronics training (RAAF early 1970s)

While there was lots of HP test equipment, all the oscilloscopes were Tektronix. Enormous beasts on trolleys, took two strong men to lift them onto a bench. 
 

Offline Stephenniall

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Re: 1973 military oscilloscope porn
« Reply #3 on: January 15, 2013, 01:57:00 am »
I love military equipment ! Its all built to the highest of standards.
 

Offline Skimask

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Re: 1973 military oscilloscope porn
« Reply #4 on: January 15, 2013, 03:57:17 am »
Ugh!  Look at all those 90 degree corners on the traces!
How did they get these things to work at all at higher freq's?
I didn't take it apart.
I turned it on.

The only stupid question is, well, most of them...

Save a fuse...Blow an electrician.
 

Offline kallisti5

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Re: 1973 military oscilloscope porn
« Reply #5 on: January 15, 2013, 05:01:14 am »
Ugh!  Look at all those 90 degree corners on the traces!
How did they get these things to work at all at higher freq's?

Keep in mind she's from the 70's and only goes up to 75 MHz.  :-BROKE

The thing also has a *large* number of rf chokes scattered around which may help  ^-^
As the thing is full military (air tight metal enclosure, etc), maybe durability and repair-ability were higher priorities?
 

Offline Skimask

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Re: 1973 military oscilloscope porn
« Reply #6 on: January 15, 2013, 05:04:31 am »
Even then, I would still think all those sharp corners would create a large number of potential stress points vs having nice rounded corners.
I didn't take it apart.
I turned it on.

The only stupid question is, well, most of them...

Save a fuse...Blow an electrician.
 

Offline SeanB

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Re: 1973 military oscilloscope porn
« Reply #7 on: January 15, 2013, 05:07:18 am »
Yes, repairable if it fails and design for no failure were a very big driver. Cost was not such an issue.
 

Offline smashedProton

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Re: 1973 military oscilloscope porn
« Reply #8 on: January 15, 2013, 05:40:50 am »
Has anyone else noticed that power supplies, av recievers, tv boards, and test equipment are all routed using different styles?  The voltage capability at parts is more or less the same, but they are routed differently.  very curious
« Last Edit: January 15, 2013, 05:43:27 am by smashedProton »
http://www.garrettbaldwin.com/

Invention, my dear friends, is 93% perspiration, 6% electricity, 4% evaporation, and 2% butterscotch ripple.
 

Offline kallisti5

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Offline jahonen

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Re: 1973 military oscilloscope porn
« Reply #10 on: January 15, 2013, 08:19:30 am »
Even then, I would still think all those sharp corners would create a large number of potential stress points vs having nice rounded corners.

More like cosmetic "issue" than a real problem. Absolutely no problem for frequencies in that scope:

http://www.sigcon.com/Pubs/edn/bigbadbend.htm

Regards,
Janne
 

Offline Skimask

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Re: 1973 military oscilloscope porn
« Reply #11 on: January 15, 2013, 08:27:41 am »
More like cosmetic "issue" than a real problem. Absolutely no problem for frequencies in that scope:

http://www.sigcon.com/Pubs/edn/bigbadbend.htm

Regards,
Janne
Good article.  Lots of good points.  I never thought electrons would "fly off into space", but I guess I was more concerned with the whole reflection thing.
The part that changed my mind was--
"Your average electron smacks into something and changes directions billions of times in a length of 10 mils. Electrons don't have any trouble banging around a corner."

Never thought of it that way.
I didn't take it apart.
I turned it on.

The only stupid question is, well, most of them...

Save a fuse...Blow an electrician.
 

Offline Galenbo

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Re: 1973 military oscilloscope porn
« Reply #12 on: January 15, 2013, 10:33:07 am »
I see BAD SOLDERING on the right big capacitor.
A shame...
If you try and take a cat apart to see how it works, the first thing you have on your hands is a nonworking cat.
 

Offline SeanB

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Re: 1973 military oscilloscope porn
« Reply #13 on: January 15, 2013, 03:19:19 pm »
Would not call it bad, just not enough at the top of the board. Must be plenty underneath, as it has held this big cap for decades.
 

Offline Jope

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Re: 1973 military oscilloscope porn
« Reply #14 on: January 15, 2013, 04:23:47 pm »
Good article.  Lots of good points.
[...]

The author, Howard Johnson, was guest on the Amp Hour #77.
 


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