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Barry Harvey

I Like 'Scopes

Barry Harvey
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Barry Harvey
Barry Harvey
8/27/2013 1:30:18 PM
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Re: Test vs. Design
Still have a 7000-series storage mainframe in the lab.  I use it to make x-y plots mostly.  You can do this with some digital scopes, but when high-slope regions of display occur the sample pixels are sparse and pretty ugly.  Not so with the analog storage; nice continuous lines throughout.  Of course, phosphor storage is pretty cludgy.

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BillWM
BillWM
8/27/2013 1:15:50 PM
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Re: Test vs. Design
I remember using the old DVST storage scopes back in my early days -- keeping the CRT from "Blooming" was always an art with those -- I even worked production doing old aircraft Navigation radars that Used DVST rather than Digital -- And I had a 465 with the TDR addon in the oil field for finding cable breaks/shorts.   Some interesting art in those old scopes.

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Barry Harvey
Barry Harvey
8/27/2013 11:56:57 AM
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Re: Test vs. Design
Yeah, I've noticed that too.  I always wondered why they were bought in the first place; HP analog 'scopes didn't trigger well, have much bandwidth, nor flexibility.  Ironically, my favorite early digital 'scope was the HP54100.  Like Tektronix, it had flexible plug-in's.  It had a great menu system and did a random but slow sample, and could display 1GHz signals.

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Scott Elder
Scott Elder
8/26/2013 10:48:02 PM
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Test vs. Design
I've always wondered why one finds HP/Agilent scopes favored by the test engineers on the test floor, but mostly only Tek scopes found in the design labs.

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