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NNTP-Posting-Date: Thu, 29 Aug 2024 18:50:16 +0000
From: john larkin <jl@650pot.com>
Newsgroups: sci.electronics.design
Subject: Re: Instead scopes
Date: Thu, 29 Aug 2024 11:50:33 -0700
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On Thu, 29 Aug 2024 16:15:59 GMT, Jan Panteltje <alien@comet.invalid>
wrote:

>On a sunny day (Thu, 29 Aug 2024 07:16:58 -0700) it happened john larkin
><jlarkin_highland_tech> wrote in <je01dj177m9p0q25en4k2jm8u0bsj07t2j@4ax.com>:
>
>>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.
>
>In the school where I was we had plenty of scopes and stuff.
>Some teachers were very old, from before the transistor age...
>The concensus was that 'only true hobbyists make it'
>I think we started with 2 classes of 30, we had 6 at the final exams that had passed at the party
>I did 2 exams at the same time, one from te gov and one from the school.
>I remember one question 'draw a PCB for this transistor circuit'
>does that still happen?
>I thought it was fun:-)
>Computers? There were none..
>Calculators yes.
> 

We weren't alowed to use a calculator on exams because it would give
an unfair advantage to the students that could afford one.

My HP35 cost $400, a bit more than my Honda S90 motorcycle.