Products > Test Equipment
Test Equipment Anonymous (TEA) group therapy thread
med6753:
--- Quote from: mnementh on June 01, 2018, 09:32:03 pm ---OMG... laying the drama on a little thick, doncha think? :-DD
The original point still obtains... the 2465 showed the glitch as easily as focusing a microscope. He had to have an idea what the problem was to set up the DSO to show it.
The analog scope STILL holds value for just this reason; you don't have to outwit it to get useful results.
mnem.
*witling*
--- End quote ---
In defense of the Siglent. I think the problem was more operator inexperience rather than a functional issue. Ever since I bought it it's been the "red headed step child" on my bench and mostly sat unused. I haven't even opened it up and looked inside! :scared: But now I'm going to force my CRO's to make peace with it. We can all co-exist.
Tautech, can this puppy be hacked to 100MHz? Just kidding...I don't want to mess with the firmware and risk bricking it.
mnementh:
--- Quote from: tautech on June 01, 2018, 09:53:00 pm ---
--- Quote from: mnementh on June 01, 2018, 09:32:03 pm ---OMG... laying the drama on a little thick, doncha think? :-DD
The original point still obtains... the 2465 showed the glitch as easily as focusing a microscope. He had to have an idea what the problem was to set up the DSO to show it.
The analog scope STILL holds value for just this reason; you don't have to outwit it to get useful results.
mnem
*witling*
--- End quote ---
Small difference; lowly DSO vs TOL professional CRO, fair comparison do you think ? :palm:
Little example of irregular glitch spotted, confirmed and searched for and triggered on.
https://www.eevblog.com/forum/testgear/siglent-sds1204x-e-released-for-domestic-markets-in-china/msg1370717/#msg1370717
Try that with your CRO. :P :horse:
--- End quote ---
Aaaand now we've just gone recursive... :palm:
...right back to my original statement that the the "one or the other" argument is just plain stupid. Each excels at different things, and decent CROs are cheap and plentiful enough that there's simply no good reason NOT to have both on your bench.
Here's another way to look at it: Right now is probably a watershed moment in this regard; this still-useful test equipment is artificially very cheap due to the fact that cheap DSOs have driven the technology to a small laboratory market where it can still sell for a price reasonable to the cost of keeping it up.
This is the time to take advantage of that fact; as in 20 years, due to the cheapness of production of all-solid-state devices dictated by Moore's Law, they will have become a niche product that costs exponentially more to own because the CRTs require precision manufacturing whose art, process and technology has been lost just like that of Nixie tubes.
Salvageable examples will be as sought-after as 1st gen Mac tube amplifiers and Stromberg-Carlson Console Televisions, and ANY decent CRO will be sought-after in the same way as we in this forum revere laboratory-condition 2465s now.
mnem
It's like beating your knee with a monkey wrench 'cuz it feels so good when you stop...
mnementh:
--- Quote from: Specmaster on June 01, 2018, 10:19:54 pm ---Seeing as the Tek 2465 seems to hail from 1989 and the Siglent I think from 2014?, there has been 25 years of development since the 2465 so its perfectly logical to have expected that the lowly Siglent was or ought to have been almost upto or equivalent to the specs of 2465 as performances and specs have risen in general at an alarming rate in that time. I'd have thought that was considered to be top level in 1989 ought to have been the entry level today given that time of evolution. In most other sciences that seems to be the case, Hi-Fi, TV, Radio, Cars and cameras etc.
In that light, the "lowly" Siglent is only lowly when compared to what is on offer today and that must be way beyond what the 2465 offered back in the day??
--- End quote ---
Okay... now push it towards 1GHz and see which one stops giving anything useful first... that's the difference between "laboratory-grade" and "Entry-level".
And that is why a properly working 2465 STILL presents an excellent value, even in this day & age. Maybe ESPECIALLY so.
The Siglent doesn't NEED to be defended; it ISN'T BEING ATTACKED. :palm: Its low manufacturing cost has made it the defacto winner here, as it and its brothers have pretty much killed off the manufacture of the core technology of CROs. That doesn't mean it's necessarily BETTER; only that it's cheaper to make, so offers a higher cost-profit ratio.
mnem
|O
tautech:
--- Quote from: med6753 on June 01, 2018, 10:46:42 pm ---Tautech, can this puppy be hacked to 100MHz? Just kidding...I don't want to mess with the firmware and risk bricking it.
--- End quote ---
I don't think so as they're only available as 50 MHz models.
https://www.siglentamerica.com/digital-oscilloscopes/sds1000dl-series-digital-storage-oscilloscopes/
Let alone you've only 500MSa/s and 30Kpts memory which will make it pretty ordinary near 100 MHz for anything other than repetitive waveforms.
tautech:
--- Quote from: mnementh on June 01, 2018, 10:47:37 pm ---
--- Quote from: tautech on June 01, 2018, 09:53:00 pm ---
--- Quote from: mnementh on June 01, 2018, 09:32:03 pm ---OMG... laying the drama on a little thick, doncha think? :-DD
The original point still obtains... the 2465 showed the glitch as easily as focusing a microscope. He had to have an idea what the problem was to set up the DSO to show it.
The analog scope STILL holds value for just this reason; you don't have to outwit it to get useful results.
mnem
*witling*
--- End quote ---
Small difference; lowly DSO vs TOL professional CRO, fair comparison do you think ? :palm:
Little example of irregular glitch spotted, confirmed and searched for and triggered on.
https://www.eevblog.com/forum/testgear/siglent-sds1204x-e-released-for-domestic-markets-in-china/msg1370717/#msg1370717
Try that with your CRO. :P :horse:
--- End quote ---
Aaaand now we've just gone recursive... :palm:
...right back to my original statement that the "the "one or the other" argument is just plain stupid. Each excels at different things, and decent CROs are cheap and plentiful enough that there's simply no good reason NOT to have both on your bench.
--- End quote ---
It's not stupid !
You conveniently overlook the fact many don't have the skill, tools or understanding to maintain or repair a CRO and yes a 2465 or any from the same family are excellent scopes but the complexity that is encountered in attempting repair of one is way past what many would choose to undertake. Some might say that their current market value is no more than $1/MHz for good reason.
When looking at the bigger picture for those wanting their first scope none of the above can or should be discounted.
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