Products > Test Equipment
True analog scopes
tautech:
--- Quote from: Sherlock Holmes on December 14, 2022, 12:29:41 pm ---
--- Quote from: xrunner on December 14, 2022, 12:22:20 pm ---
--- Quote from: Sherlock Holmes on December 14, 2022, 12:18:07 pm ---My Siglent will lock up sometimes due to bugs and must be repowered, often losing several precisely set parameters, no analog scope will, can, fall victim to that.
--- End quote ---
If you said so earlier I missed it, but what model Siglent are you referring to?
--- End quote ---
Its an SDS1204X-E.
--- End quote ---
FW right up to date ?
Later OS upgrade installed too ?
Hacked or genuine 200 MHz unit ? If hacked what method used ?
Have you installed any Custom Defaults ?
Last Self Cal ?
These are a quite mature product now and if running latest firmware don't give problems.
Can you list the steps/procedure to reliably make it hang ?
tautech:
--- Quote from: robert.rozee on December 14, 2022, 11:30:38 am ---i can see a few places where a CRT/analog oscilloscope is a preferable solution:
1. where there are tight cost and resource constraints. ie, poor people who can only afford a 2nd hand CRT scope, perhaps living in a place where new equipment is not available. think of the slums in places like india.
2. in locations where radiation hardening is necessary. for instance, off-planet. there may be such situations where semiconductors can not be depended upon, and fully-valved equipment needs to be used.
3. in situations where the displayed trace is safety-critical, and a digital solution introduces the possibility of failure modes that are not acceptable. for instance, displaying the sine wave output from a generation plant, where a DSO could fail with a frozen display. basically a CRT/analog oscilloscope provides an extremely simply display where any failure within the instrument is guaranteed to remove the trace on the screen; a DSO can lock up with a 'good' image on the display even if there is a 'bad' input signal.
the above are all extreme examples, but non-the-less could still exist in the real world.
4. it is also important that we preserve "old technology" so that if some global mishap knocks back society, we can pick up at a level of technology that is still achievable within any 'new world order' without having to go back to the stone age. for instance, if a massive solar flare knocked out all of our existing semiconductor electronics infrastructure, it would be nice for human society to be able to pick up at the level of 1920's valve technology and rebuild from there.
cheers,
rob :-)
--- End quote ---
Walk into any hospital and look at the ECG's in use, remember these are just a specialised oscilloscope with some counting features added and they're all modern compact LCD displays just like the modern DSO.
Here in NZ a new Asian brand mindray is taking the health industry by storm with their range of ECG's all small, light and compact. I had the pleasure to be connected to several of these new products while on a short vacation in the NZ Health system a few months back.
One of their flasier models:
https://www.mindray.com/en/products/patient-monitoring/continuous-patient-monitoring/benevision-n22-n19
MarkL:
--- Quote from: precaud on December 14, 2022, 04:58:47 pm ---
--- Quote from: switchabl on December 14, 2022, 03:47:35 pm ---https://www.tek.com/en/datasheet/ada400a-differential-preamplifier-datasheet
--- End quote ---
Nice, but quite pricey...
--- End quote ---
If you don't mind something a little more clunky than a boxy probe, the Tek AM502 module is similar in functionality and is more configurable. Certainly cheaper, even including the TM50x mainframe.
https://w140.com/tekwiki/wiki/AM502
Sherlock Holmes:
--- Quote from: tautech on December 14, 2022, 07:23:55 pm ---
--- Quote from: Sherlock Holmes on December 14, 2022, 12:29:41 pm ---
--- Quote from: xrunner on December 14, 2022, 12:22:20 pm ---
--- Quote from: Sherlock Holmes on December 14, 2022, 12:18:07 pm ---My Siglent will lock up sometimes due to bugs and must be repowered, often losing several precisely set parameters, no analog scope will, can, fall victim to that.
--- End quote ---
If you said so earlier I missed it, but what model Siglent are you referring to?
--- End quote ---
Its an SDS1204X-E.
--- End quote ---
FW right up to date ?
Later OS upgrade installed too ?
Hacked or genuine 200 MHz unit ? If hacked what method used ?
Have you installed any Custom Defaults ?
Last Self Cal ?
These are a quite mature product now and if running latest firmware don't give problems.
Can you list the steps/procedure to reliably make it hang ?
--- End quote ---
I'd need to check, it certainly isn't hacked, I bought the license for the logic analyzer update a few months ago, from Siglent US. The problem arises when using that digital mode, looking at SPI and adjusting the data display from hex/binary etc, happened several times a few months ago.
tautech:
--- Quote from: Sherlock Holmes on December 14, 2022, 08:54:29 pm ---
--- Quote from: tautech on December 14, 2022, 07:23:55 pm ---
--- Quote from: Sherlock Holmes on December 14, 2022, 12:29:41 pm ---
--- Quote from: xrunner on December 14, 2022, 12:22:20 pm ---
--- Quote from: Sherlock Holmes on December 14, 2022, 12:18:07 pm ---My Siglent will lock up sometimes due to bugs and must be repowered, often losing several precisely set parameters, no analog scope will, can, fall victim to that.
--- End quote ---
If you said so earlier I missed it, but what model Siglent are you referring to?
--- End quote ---
Its an SDS1204X-E.
--- End quote ---
FW right up to date ?
Later OS upgrade installed too ?
Hacked or genuine 200 MHz unit ? If hacked what method used ?
Have you installed any Custom Defaults ?
Last Self Cal ?
These are a quite mature product now and if running latest firmware don't give problems.
Can you list the steps/procedure to reliably make it hang ?
--- End quote ---
I'd need to check, it certainly isn't hacked, I bought the license for the logic analyzer update a few months ago, from Siglent US. The problem arises when using that digital mode, looking at SPI and adjusting the data display from hex/binary etc, happened several times a few months ago.
--- End quote ---
You can get all the updates here:
https://int.siglent.com/download/firmwares/?ProId=12
You need to get up to 37R9 and 8.3 OS and while you're there check your SLA1016 has the latest version installed too.
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