Products > Test Equipment
True analog scopes
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nctnico:

--- Quote from: Fungus on December 18, 2022, 01:51:08 pm ---
--- Quote from: vk6zgo on December 18, 2022, 01:29:30 pm ---CROs have both "Normal" & "Auto" trigger mode.

When I am looking at various points in a DUT, I normally let the 'scope "free run" in Auto.

--- End quote ---

DSOs have the same, and a few more, eg. Single shot mode where you trigger once and it grabs the signal so you can look at it at in your own time, maybe even zoom in for a closer look... very useful, but CROs don't do it.

--- End quote ---
Not true. Storage CROs do exist. These can capture a (slow) waveform and keep it on the display. There just isn't any zooming in/out AFAIK. I have used these 30 years ago.
nctnico:

--- Quote from: tggzzz on December 17, 2022, 08:14:04 pm ---
--- Quote from: Mechatrommer on December 17, 2022, 07:37:19 pm ---
--- Quote from: tggzzz on December 17, 2022, 07:11:37 pm ---Frequently during a professional career people will have to make do with what's already available because

* you need it now, not in a month's time
* money has to be used for other necessary equipment
* it won't pass the purchase request process
* it is back at base, not here in the field
* boss says you don't need it
* there is nothing that is capable of doing the jobI've seen all of those, and had to find workarounds.

Might as well get engineers to think creatively from the outset. That's not true for technicians, of course - and vive la différence!

--- End quote ---
if your company cant afford $400 DSO, i suggest find another company because they surely cant make raise to your salary accordingly... i've also encountered such situation during my short time working as practising (profession) eng... but there is difference/limit between working to the limit and asking the impossible... and every workaround has its catches... be it money, space or time... you wont get anything far with $1 tools, let alone going into GHz region, unless you want to work full time as dumpster diver, but again, the catch is... time... one of it... concrete example will prove me wrong... ymmv.

--- End quote ---

I suspect there is a language divide here, because you have missed the point(s).

--- End quote ---
Mechatrommer got the point just fine and is absolutely right. If your employer can't afford good tools that make you do your job efficiently, then it is time to leave. On several occasions I even brought my own equipment along just to get the job done quickly. I want to make progress with the project at hand and not get stuck in endless tinkering & detours. Like your comment earlier about Rigol & Siglent: too many problems may linger so I won't be so quick to use test equipment from those brands in a professional environment (especially with less experienced engineers around). I've learned my lessons; low purchase price and TCO are not the same number. I'm getting paid to create a new product, not to build and/or debug test equipment.
tggzzz:

--- Quote from: nctnico on December 18, 2022, 10:07:55 pm ---
--- Quote from: Fungus on December 18, 2022, 01:51:08 pm ---
--- Quote from: vk6zgo on December 18, 2022, 01:29:30 pm ---CROs have both "Normal" & "Auto" trigger mode.

When I am looking at various points in a DUT, I normally let the 'scope "free run" in Auto.

--- End quote ---

DSOs have the same, and a few more, eg. Single shot mode where you trigger once and it grabs the signal so you can look at it at in your own time, maybe even zoom in for a closer look... very useful, but CROs don't do it.

--- End quote ---
Not true. Storage CROs do exist. These can capture a (slow) waveform and keep it on the display. There just isn't any zooming in/out AFAIK. I have used these 30 years ago.

--- End quote ---

Some were used to capture fast difficult-to-repeat events, especially when measuring nuclear detonations ;)
tggzzz:

--- Quote from: nctnico on December 18, 2022, 10:22:23 pm ---
--- Quote from: tggzzz on December 17, 2022, 08:14:04 pm ---
--- Quote from: Mechatrommer on December 17, 2022, 07:37:19 pm ---
--- Quote from: tggzzz on December 17, 2022, 07:11:37 pm ---Frequently during a professional career people will have to make do with what's already available because

* you need it now, not in a month's time
* money has to be used for other necessary equipment
* it won't pass the purchase request process
* it is back at base, not here in the field
* boss says you don't need it
* there is nothing that is capable of doing the jobI've seen all of those, and had to find workarounds.

Might as well get engineers to think creatively from the outset. That's not true for technicians, of course - and vive la différence!

--- End quote ---
if your company cant afford $400 DSO, i suggest find another company because they surely cant make raise to your salary accordingly... i've also encountered such situation during my short time working as practising (profession) eng... but there is difference/limit between working to the limit and asking the impossible... and every workaround has its catches... be it money, space or time... you wont get anything far with $1 tools, let alone going into GHz region, unless you want to work full time as dumpster diver, but again, the catch is... time... one of it... concrete example will prove me wrong... ymmv.

--- End quote ---

I suspect there is a language divide here, because you have missed the point(s).

--- End quote ---
Mechatrommer got the point just fine and is absolutely right. If your employer can't afford good tools that make you do your job efficiently, then it is time to leave. On several occasions I even brought my own equipment along just to get the job done quickly. I want to make progress with the project at hand and not get stuck in endless tinkering & detours. Like your comment earlier about Rigol & Siglent: too many problems may linger so I won't be so quick to use test equipment from those brands in a professional environment (especially with less experienced engineers around). I've learned my lessons; low purchase price and TCO are not the same number. I'm getting paid to create a new product, not to build and/or debug test equipment.

--- End quote ---

I completely agree with you about it being a "time to leave" flag, but mechatrommer did miss the points I was making.
vk6zgo:

--- Quote from: Mechatrommer on December 18, 2022, 02:55:31 pm ---
--- Quote from: vk6zgo on December 18, 2022, 01:29:30 pm ---CROs have both "Normal" & "Auto" trigger mode.
When I am looking at various points in a DUT, I normally let the 'scope "free run" in Auto.

--- End quote ---
and probably Wallace Gasiewicz's CRO doesnt have that feature, since from the way he stated, he never see "Normal" triggering effect in his CRO.

--- End quote ---

Very unlikely----I have never seen any CRO which has triggering at all, which doesn't offer both "normal" & "auto".

Very early, & a few later very cheap, 'scopes, had a "timebase" that was normally "free running" & used a "sync" control to "sort of" sync the timebase to the incoming signal.
He could, just possibly have one of those.
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