Breaking News
Comments
Newest First | Oldest First | Threaded View
Arthur Pini
User Rank
Blogger
Re: Grids
Arthur Pini   6/12/2014 4:56:54 PM
NO RATINGS
Hi bikeron,

Thanks for the great reference. It certainly shows the state of the art on the 1950's.

I agree that grids were associated with scopes from the very first commercial models.

The reference to the 1970's in the article was associated with the advent of cursors in scopes. 

 

Regards

Art

 

 

bikeron
User Rank
Rookie
Grids
bikeron   6/12/2014 2:33:49 PM
NO RATINGS
Grids were on scopes long before the 70's.

http://en.wikipedia.org/wiki/Tektronix_analog_oscilloscopes

 Here is from 1950's!

http://richardsears.wordpress.com/2012/01/07/near-the-beginning-of-an-era-the-tektronix-511a/

gah4
User Rank
Manager
Re: Analog scope
gah4   6/5/2014 9:11:12 PM
NO RATINGS
In between the traditional analog scope and the digital version was the storage CRT. The elecron (charge) image would be stored on the screen, and made visible with a flood electron gun. 

But yes, with cheap digital storage, that is the best way to do it.

Arthur Pini
User Rank
Blogger
Re: Analog scope
Arthur Pini   6/4/2014 8:16:17 AM
NO RATINGS
Hi Martin,

You could align cursors with the waveform visually if the waveform were repetitive or you could use the persistence of the phosphor (P7 would remain visible for about 20 seconds in a dark room or with a hood).  What I intended to say was that cursors could not 'ride ' on the waveforms as they do in a digitical scope because the scope did not retain the waveform.  Having cursors move on the waveform avoids visual alignment errors that can happen with simple overlaid cursors.

Art 

MeasurementBlues
User Rank
Blogger
Analog scope
MeasurementBlues   6/3/2014 11:17:41 PM
NO RATINGS
Arthur,

Could you use persistence to display the waveforms longer, maybe even with whough time to place your cursors?

The first cursors were horizontal and vertical lines superimposed on the display that you could use to measure the amplitude and time differences of points on the waveform. Cursors couldn't do more on an analog oscilloscope since the waveforms were transient -- they only existed for the duration of the sweep.



EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

10 Top Video Parodies on User Interfaces
Max Maxfield
15 comments
As you may know, the people of Scotland are holding a referendum today to decide whether they wish to remain part of the United Kingdom (UK) or to become fully independent and "go it ...

EDN Staff

11 Summer Vacation Spots for Engineers
EDN Staff
20 comments
This collection of places from technology history, museums, and modern marvels is a roadmap for an engineering adventure that will take you around the world. Here are just a few spots ...

Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
15 comments
- An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
46 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)