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Found a really good short total introduction video series for oscilloscopes

Bill-kun

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Very good start for total beginners who have not necessarily even seen an oscilloscope before, or have but never touched one. It starts at the very basic concept, as in, what the essential components are inside an analog oscilloscope that make it do what it does.

Intro to Oscilloscopes | Scopes 1 of 5 | Doc Physics

How to Use an Oscilloscope | Scopes 2 of 5 | Doc Physics

Measure Period, Frequency, & Amplitude on Oscilloscope | Scopes 3 of 5 | Doc Physics

Measure High Frequency with Oscilloscope | Scopes 4 of 5 | Doc Physics's Most Annoying Video (his words, not mine!) :D

Funky Signals Inside a Stroboscope | Scopes 5 of 5 | Doc Physics


Some other ones that look good:

EEVblog #926 - Introduction To The Oscilloscope

Oscilloscope Basics, Part 1: Discussion, Y-Axis (Voltage) Controls, Probe Calibration

Introduction to oscilloscopes
 
For whatever it's worth, I recommend a used analog 'scope for newbies to the technology. DSOs can be overwhelming to use, given the number of options.
 
I bought an old Hameg 20 Mhz must be nigh on 20 years ago, I played with it for a few hours and put it back in it's leather case, Haven't touched it since, probably dead now. I'll have to dig it out one of these days.
 
For whatever it's worth, I recommend a used analog 'scope for newbies to the technology. DSOs can be overwhelming to use, given the number of options.
I definitely wanted to start with analog. I so happen to have a used analog scope with 2 input channels. Perfect for beginners! I have no idea if I will graduate to a digital scope, or to Virtual Bench. It depends on how deep my repairs go in the future. But EEV Blog’s video above has easily convinced me of the advantage in many situations for a digital one.

And here’s a segment where Mr. Wizard demonstrates measuring audible and inaudible sound with an analog oscilloscope.
 
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There are some situations where an analog scope is preferable to a DSO. Some service manuals assume the use of analog and it's just easier to use one that way. That's one reason that I keep my Tek 465 around.
 
Try using a digital scope to do the track alignment of a floppy drive with a cats eye pattern. Some may work while others just show a mess.
There is not mention of aliasing and what sampling means, when talking about DSOs. There are reasons to use a analog scope over a DSO. A cheap DSO is often more difficult to use than a 100Mhz analog scope for most work with a classic computer ( that is signals of 10MHz or less ).
Of greater use is a logic analyzer, than a cheap DSO, for computer diagnosis. DSO's are great for many uses but can fail for some applications we use scopes for. A good logic analyzer and an analog scope will be much more useful than a typical DSO.
I've managed for year with just an analog scope. I've used both logic analyzers and digital scopes for special needs at work but never needed them for classic computers.
Dwight
 
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