Re: Instead scopes

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 :)
 

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.

I use them all regularly.

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.

A 12-bit scope might be useful if the ENOB is anything like that, but I
have doubts, especially in a 250 MHz bandwidth.

Cheers

Phil Hobbs

Cheers

Phil Hobbs


--
Dr Philip C D Hobbs  Principal Consultant  ElectroOptical Innovations LLC /
Hobbs ElectroOptics  Optics, Electro-optics, Photonics, Analog Electronics