Products > Test Equipment

Why is the trigger rate of my scope (SDS814X HD) changing in an unexpected way?

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Martin72:

--- Quote ---Oh I failed my life's calling...
--- End quote ---

eTobey:

--- Quote from: 2N3055 on September 29, 2024, 07:44:31 pm ---
--- Quote from: eTobey on September 29, 2024, 07:26:48 pm ---You evaded all my questions. I am dissapointed.  :(

--- End quote ---
I told you all you need to know. There are Gigabytes per second data rates, very complicated data paths, and lots of real time processing. As scope goes through all possible combinations of sample rates, channels, segments, background history segments, measurements, math, different acquisition modes, it keeps reconfiguring internal state machines for hundreds of different combinations. It is obvious not all of them can be equally optimized or straight forward.

--- End quote ---

You told me things that do not match with the manual and my understanding:
RTFM:

--- Quote ---In sequence mode, the oscilloscope only acquires and stores data without processing and displaying, until the specified segments are acquired.
--- End quote ---

Also from the link above:
"The process is also called simple decimation. It is fast and easy to implement, ..."

And then you use terms like digital phosporus, what actually should make things much quicker, not slower.

And still it makes no sense, that - speaking in other words for activating more channels - putting a trailer behind a car, should make it faster.


2N3055:

--- Quote from: eTobey on September 29, 2024, 08:32:41 pm ---
--- Quote from: 2N3055 on September 29, 2024, 07:44:31 pm ---
--- Quote from: eTobey on September 29, 2024, 07:26:48 pm ---You evaded all my questions. I am dissapointed.  :(

--- End quote ---
I told you all you need to know. There are Gigabytes per second data rates, very complicated data paths, and lots of real time processing. As scope goes through all possible combinations of sample rates, channels, segments, background history segments, measurements, math, different acquisition modes, it keeps reconfiguring internal state machines for hundreds of different combinations. It is obvious not all of them can be equally optimized or straight forward.

--- End quote ---

You told me things that do not match with the manual and my understanding:
RTFM:

--- Quote ---In sequence mode, the oscilloscope only acquires and stores data without processing and displaying, until the specified segments are acquired.
--- End quote ---

Also from the link above:
"The process is also called simple decimation. It is fast and easy to implement, ..."

And then you use terms like digital phosporus, what actually should make things much quicker, not slower.

And still it makes no sense, that - speaking in other words for activating more channels - putting a trailer behind a car, should make it faster.

--- End quote ---

In sequence mode scope will not process display and measurements.
There is oodles of other processing still in the core data pump: triggering, interpolation, data duplication...

Why do you ask questions when all the time you simply discard answers and keep repeating your opinion, based on complete lack of understanding how things really work?
You seem to know better everything, even better than companies with thousands of engineers that make actual devices.
I think you should start a company and start making your own scopes.

tautech:

--- Quote from: 2N3055 on September 29, 2024, 08:46:07 pm ---I think you should start a company and start making your own scopes.

--- End quote ---
And prepare for a crash landing.  :scared:

KungFuJosh:

--- Quote from: 2N3055 on September 29, 2024, 08:46:07 pm ---Why do you ask questions when all the time you simply discard answers and keep repeating your opinion, based on complete lack of understanding how things really work?

--- End quote ---

I figured it out! He's the "Guy On Internet." Example:


--- Quote ---Study 4 years for degree.
Study 3 more for PhD.
Join lab, start working.
Spend years studying problem.
Form hypothesis, gather evidence.
Test hypothesis, form conclusions.
Report findings, clear peer review.
Findings published, reported in press.
Guy on internet: "Bullshit."
--- End quote ---

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