Re: Instead scopes

wmartin <wwm@wwmartin.net> wrote:

On 8/27/24 08:07, Phil Hobbs wrote:

Martin Rid <martin_riddle@verison.net> wrote:

Martin Rid <martin_riddle@verison.net> Wrote in message:r

Anyone own the gds-1202b ?Any good?$350 at tequipmentCheers--
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Spell check error.
 
Title should be: 'Instek scopes'
 
 

 
I suspect that it was right the first time. ;)
 

>

 

Hmm, how much did you get paid for that ringing endorsement? :-)

Three bags of Scopie Treats. Mmm—mmmm. ;)

I’m not at all against cheap scopes with fancy specs.  For most of my
stuff, I need something faster than 1GSa/s, but a 12 bit digitizer could
certainly come in handy.

Thing is, if I have to average 16 or more traces to get the noise floor
down far enough for that resolution to be meaningful, I really haven’t
gained that much. 

By Widrow’s theorem, if there’s at least an LSB or two worth of real noise,
quantization noise averages out the same as any other sort.

So the ENOB spec is key.

Cheers

Phil Hobbs



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