Products > Test Equipment
Building my own scope
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py-bb:

--- Quote from: tggzzz on October 22, 2022, 02:15:16 pm ---[snip]

--- End quote ---

This is going to come across a bit snippy but I mean it pragmatically.

You're causing serious thread clutter with this.

I think you think you're informing me of stuff, I think you're ... spouting stuff you've heard without really understanding (again for the spirit of brevity) and you think you're doing something.

Spouting these facts does not help OP.

You had a good point with the "analogue is easy" without a CRT not being easy, but the rest isn't going to help.
Mechatrommer:

--- Quote from: tggzzz on October 22, 2022, 02:30:43 pm ---Read more carefully. I think the DS1054 scope is a normal scope. The context you chose to omit indicates you think it isn't normal.

--- End quote ---
there you go strawman fallacy again. i never mentioned anything about DS1054. i bet you havent read this carefully... https://blogs.keysight.com/blogs/tech/bench.entry.html/2022/05/09/what_s_the_differencebetweenareal-timeandsamp-WuT8.html
tggzzz:

--- Quote from: Mechatrommer on October 22, 2022, 02:14:55 pm ---
--- Quote from: tggzzz on October 22, 2022, 01:40:50 pm ---So you discount commercial scopes such as the HP54110A 1GHz bandwidth, 40MS/s? That was a "normal" scope in its day, albeit top of the range.

--- End quote ---
so you discount Shannon-Nyquist Theorem? circa 1915

--- End quote ---

The two options are that:

* you don't understand those theorems as well as you think you do, or
* HP manufactured and sold equipment that violated those theorems. Bear in mind that I used that scope and knew the engineer that designed the digitiser.Which is more likely?

BTW, here's the manual from which I took the numbers: https://www.keysight.com/us/en/assets/9018-05874/user-manuals/9018-05874.pdf

To save you the irritation of giving a false email address, here are the two key specs from p3-1 and 3-2...
tggzzz:

--- Quote from: py-bb on October 22, 2022, 02:34:17 pm ---
--- Quote from: tggzzz on October 22, 2022, 02:15:16 pm ---[snip]

--- End quote ---

This is going to come across a bit snippy but I mean it pragmatically.

You're causing serious thread clutter with this.

--- End quote ---

That's one opinion. In any case, it takes two to make clutter.


--- Quote ---I think you think you're informing me of stuff, I think you're ... spouting stuff you've heard without really understanding (again for the spirit of brevity) and you think you're doing something.

--- End quote ---

You do not understand that you do not understand!

I wish I could repeat a PM I received about you a couple of hours ago. I can't since it is obviously private, and therefore I cannot unfortunately justify that statement. Sorry about that. The key observation was your first post was a simple question about scope input protection, followed by your being a microwave expert. I prefer not to jump to conclusions as fast as wryly and tentatively suggested in that PM.



--- Quote ---Spouting these facts does not help OP.

--- End quote ---

That's not for you to say. Or do you know what he thinks and speak for him?


--- Quote ---You had a good point with the "analogue is easy" without a CRT not being easy, but the rest isn't going to help.

--- End quote ---

I have never said "analogue is easy" or anything remotely similar. Analogue is subtle and complex; that's why there aren't so many analogue engineers and products nowadays.
Mechatrommer:
the problem with my wife is.. apart from wandering off topic to defend her point, is she thinks i'm a fool, even if when talking about technical topic (she's a kindergarden teacher). ;D
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