Re: Instead scopes

On Thu, 29 Aug 2024 19:15:29 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

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On 2024-08-28 16:05, john larkin wrote:

On Wed, 28 Aug 2024 17:41:33 -0000 (UTC), Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:
 

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.
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Cheers

>
It sounds pretty good to me.
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https://siglentna.com/wp-content/uploads/dlm_uploads/2020/02/SDS1000X-E_DataSheet_DS0101E-E04C.pdf
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What's missing?
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I like the 500 uV/div.

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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)
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https://www.dropbox.com/scl/fo/ns08x686afbayjsw8c2ab/h?rlkey=iu4h89057t755pueg4ijnldbo&dl=0
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and my fast scope is a Tek 11802 sampler.

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I also have one, 11801C. Couple of SD-24s, SD-20, and SD-22 heads :)
>

I don't have any relation to Rigol, just have DHO924S as a go-to scope on my
bench and DHO814 for use as an advanced multimeter wherever I need a
portable one. I like them and I can run them in a web browser if needed.

>
I bought the Siglent as a gift, and I was curious about it.
>

>
I do have an advanced LeCroy WR640Zi with all options for serious jobs -- it
is 40GS/s 4GHz bandwidth instrument with all features imaginable -- but I
rarely power it up. It makes a noise like a jet at takeoff (Rigol DHO is
very quite) and it is 8-bit so what you get on the screen looks ugly
comparing with 12-bit DHO. DHO924 covers 99% of real world debugging so
LeCroy is mostly gathering dust...

>
So is ours! It cost $50K.  It doesn't make much sense and there is
basically no support. It doesn't make sense to them either.

>
Yep, all those features are nice but very rarely needed in the real life.

>
Next to my bench, I have a couple of TDS 784As, a TDS 694C, an 11801C, and
an 11802 that JL kindly donated when I went out on my own, lo these fifteen
years ago. Also several SD-14s and SD-24s, plus at least one of all the
other heads except the SD-32.
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I use them all regularly.
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My favorite is the 694C—3GHz, 10GSa/s simultaneously on all four channels.
It’s 50 ohms only, but I also have the matching 4GHz FET probes.
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A 12-bit scope might be useful if the ENOB is anything like that, but I
have doubts, especially in a 250 MHz bandwidth.
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Cheers
>
Phil Hobbs
>
Cheers
>
Phil Hobbs

 
The 3 GHz probe sampler, the SD14, is incredible. Its loading is close
to zero and in most cases it doesn't even need a ground clip on the
probe.
 
I have a couple of the SD32 (50 GHz)  heads, if you need to do
something fast.
 
And one each of the SD42 and SD43 optical-input heads.
 

Yeah, I have one each of the 20 GHz SD-48 and SD-46, and two of the
slower (6 GHz) SD-42s.  They're great except that they're blind north of
900 nm.
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I also have an SD-51 trigger head, which is a tunnel diode gizmo that
improves the high-speed triggering, and an SD-20 loop-through head,
which lets you sample the input signal to some gizmo as well as its output.
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The 2-meter extender cables are super useful because you can bring the
sampler to the gizmo rather than the other way round.
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Cheers
>
Phil Hobbs

The extender cables cost more than the heads nowadays.