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From: Bill Sloman <bill.sloman@ieee.org>
Newsgroups: sci.electronics.design
Subject: Re: Instead scopes
Date: Fri, 30 Aug 2024 00:43:39 +1000
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On 30/08/2024 12:16 am, john larkin wrote:
> On Thu, 29 Aug 2024 06:55:15 -0700, john larkin
> <jlarkin_highland_tech> wrote:
> 
>> On Thu, 29 Aug 2024 05:46:54 GMT, Jan Panteltje <alien@comet.invalid>
>> wrote:
>>
>>> On a sunny day (Wed, 28 Aug 2024 09:32:58 -0700) it happened john larkin
>>> <jlarkin_highland_tech> wrote in <mtjucjdqe2f91c2jsjp6011k0uvakuimog@4ax.com>:
>>>
>>>> On Wed, 28 Aug 2024 15:21:00 -0000 (UTC), Sergey Kubushyn
>>>> <ksi@koi8.net> wrote:
>>>>
>>>>> john larkin <jlarkin_highland_tech> wrote:
>>>>>> On Wed, 28 Aug 2024 04:28:02 -0000 (UTC), Sergey Kubushyn
>>>>>> <ksi@koi8.net> wrote:
>>>>>>
>>>>>>> john larkin <jlarkin_highland_tech> wrote:
>>>>>>>> On Tue, 27 Aug 2024 14:55:32 -0400 (EDT), Martin Rid
>>>>>>>> <martin_riddle@verison.net> wrote:
>>>>>>>>
>>>>>>>>> john larkin <jlarkin_highland_tech> Wrote in message:r
>>>>>>>>>> On Tue, 27 Aug 2024 10:40:15 -0400 (EDT), Martin Rid<martin_riddle@verison.net> wrote:>Anyone own the gds-1202b ?>>Any
>>>>>>>>>> good?>>$350 at tequipment>>CheersI haven't tried that one. We like the Rigols.I recently acquired a
>>>>>>>>>> Siglenthttps://www.amazon.com/gp/product/B06XZML6RD/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1and gave it to one of my engineers. I'll ask him how he
>>>>>>>>>> likes it.It has an up-front DEFAULT button, which a digital scope needs to getyou out of nightmare states.
>>>>>>>>>
>>>>>>>>> Other than the lack of software features,  the 200mhz bw for 350
>>>>>>>>> dollars is intriguing.
>>>>>>>>>
>>>>>>>>> Cheers
>>>>>>>>
>>>>>>>> It sounds pretty good to me.
>>>>>>>>
>>>>>>>> https://siglentna.com/wp-content/uploads/dlm_uploads/2020/02/SDS1000X-E_DataSheet_DS0101E-E04C.pdf
>>>>>>>>
>>>>>>>> What's missing?
>>>>>>>>
>>>>>>>> I like the 500 uV/div.
>>>>>>>
>>>>>>> If you want to save the last penny, maybe. But you can get way better scope
>>>>>>> for slightly more -- Rigol DHO800/DHO900. It is 12-bit, same 550uV/div, has
>>>>>>> all standard serial protocols decoding, very light and compact, can work
>>>>>> >from a battery with USB-C power connector, way better than that Siglent that
>>>>>>> feels like relic next to those DHOs.
>>>>>>
>>>>>> We use almost all Rigols at work. My slow bench scope is a 500 MHz
>>>>>> DS4034 (upgraded from 350 MHz)
>>>>>>
>>>>>> https://www.dropbox.com/scl/fo/ns08x686afbayjsw8c2ab/h?rlkey=iu4h89057t755pueg4ijnldbo&dl=0
>>>>>>
>>>>>> and my fast scope is a Tek 11802 sampler.
>>>>>
>>>>> I also have one, 11801C. Couple of SD-24s, SD-20, and SD-22 heads :)
>>>>
>>>> At the original purchase price, adjusted for inflation, I must have
>>>> half a million dollars worth of sampling heads.
>>>>
>>>> The color grading and jitter measurement is great on the 11801C, but
>>>> the old B+W screens photograph better.
>>>>
>>>> I'll miss my 11802 when it eventually dies.
>>>>
>>>> The TDR is great. I'm going to give my new kids a lecture on
>>>> transmission lines, and I'll show them some TDR.
>>>>
>>>> It is apparently possible these days to get an EE degree and be
>>>> completely ignorant of transmission lines. Or even electricity.
>>>
>>> oops!
>>>
>>> Then what DO they know?
>>
>> How to type c++
> 
> One issue here is that it's cheaper and easier to teach coding, than
> it is to teach electronics.
> 
> I walked through the Cornell EE school. I saw about 25 computer
> screens and one oscilloscope.

It's lot easier and quicker to bread-board a circuit in LTSpice than it 
is to wire up a test circuit, but what that means is that you need to 
make fewer real circuits and they are a lot more likely to work when tested.

That, on it's own, is enough to explain why labs look different today 
than they did in the dark ages.

-- 
Bill Sloman, Sydney