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Analog Oscilloscope Dual Trace 20-100MHz For Under $50 In The USA?

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fabrizio_fabrice:

--- Quote ---I don't have deep enough pockets to buy a decent modern Rigol or Siglent DSO, old analog CRT scopes are the way to go for me.
--- End quote ---
You'd probably also be disappointed to find that the Siglent, anyway, can trigger on only one input channel at at time, unlike virtually every analog scope.  If you turn that channel off or lift its probe, it quits triggering - not intelligent enough to switch the trigger to the operational channel.  It's been a big disappointment to find how little consideration Siglent gave to analog measurements.

bdunham7:
Even if you will eventually get a DSO, it is still nice to have a good CRO around, especially if you are familiar with them.  I repair them as a hobby, and while I do occasionally find usable scopes here in SoCal within driving range and sometimes under $50, that's going to be a tough thing to find locally for you.  I would take ccktek up on that offer--the 22xx series are pretty decent and if it breaks, you can fix it. 

james_s:

--- Quote from: fabrizio_fabrice on November 20, 2019, 04:21:44 am ---
--- Quote ---I don't have deep enough pockets to buy a decent modern Rigol or Siglent DSO, old analog CRT scopes are the way to go for me.
--- End quote ---
You'd probably also be disappointed to find that the Siglent, anyway, can trigger on only one input channel at at time, unlike virtually every analog scope.  If you turn that channel off or lift its probe, it quits triggering - not intelligent enough to switch the trigger to the operational channel.  It's been a big disappointment to find how little consideration Siglent gave to analog measurements.

--- End quote ---

My Tek DSOs work that way too, you manually set the trigger to a specific channel, not sure I'd want it automatically changing, that sounds potentially annoying. Pretty sure my analog scope is also that way, haven't used that in a while though.

fabrizio_fabrice:

--- Quote from: james_s on November 20, 2019, 05:45:55 am ---
My Tek DSOs work that way too, you manually set the trigger to a specific channel, not sure I'd want it automatically changing, that sounds potentially annoying. Pretty sure my analog scope is also that way, haven't used that in a while though.

--- End quote ---
Your Tek DSO doesn't support a trigger source per channel? 

I bet your Tek analog scope does, and uses the vertical channel trigger mode to figure out what to do when a channel no longer provides it.  https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg2771310/#msg2771310 describes how that worked.

I was beyond potentially annoyed to learn that my 1202X-E can't have an independent trigger source per channel, and won't switch to the working channel. 

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