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Oscilloscope Zoom Out Quirk

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EEVblog:

--- Quote from: maginnovision on June 11, 2020, 03:49:06 am ---Just to clarify the history mode is a PAID option. You get whatever mem depth you ask for and however many segments(to a limit) it takes to fill available sample memory.

--- End quote ---

Not on the 2000X PLus it's not, no such option in the options screen.
https://int.siglent.com/products-ware/sds2000xp/

maginnovision:

--- Quote from: EEVblog on June 11, 2020, 03:56:36 am ---
--- Quote from: maginnovision on June 11, 2020, 03:49:06 am ---Just to clarify the history mode is a PAID option. You get whatever mem depth you ask for and however many segments(to a limit) it takes to fill available sample memory.

--- End quote ---

Not on the 2000X PLus it's not, no such option in the options screen.

--- End quote ---

Right, I'm talking about the RTB, RTM, RTA it's a paid option. I think it's standard on the 2kx+ but it'd better be since that kind of memory isn't as useful when you only actually get a small fraction of what's available during normal usage. Unless normally you need that kind of memory depth(100ms/div).

TiN:
Tek DPO7k series don't zoom out, as the sample rate is locked together with sample depth, cannot set one without changing other :)

jjoonathan:

--- Quote ---Right, I'm talking about the RTB, RTM, RTA it's a paid option.
--- End quote ---
Yuck. It's standard on the RTE, RTO, and RTP, though, and those models also have a third timebase knob to control memory depth. I really love that third knob, it makes it super convenient to trade off vertical resolution / sample rate and time / RBW for FFTs.

Elasia:

--- Quote from: EEVblog on June 11, 2020, 03:51:48 am ---
--- Quote from: maginnovision on June 11, 2020, 03:49:06 am ---Yea, that is a real difference. You get what you ask for. It's really odd setting a limit(and so few options too) for memory. May as well remove that entirely.

--- End quote ---

Yes, on the Siglent you literally change the memory depth on the menu and the memory depth shown in the bottom sample window doesn't change. It's insane.

--- End quote ---

Dave.. your latest video just made me realize something..

It CAN zoomout! It's just not how you would think to do it...

To set it up, first set a timebase that will let you use the full 200M

UNDER the horizontal key press Zoom

THEN Zoom in to the actual display/timebase you want, you can zoom in just as a normal timebase change AND keep 200 Megapoints

when the event triggers you are interested in, just be on the bottom area and do the normal horizontal adjustment out OR use the top portion to drag it to one side or the other to the area you are interested in

The bottom area is the entire normal page but has been scaled down... i think this is why they make the menu bars also cause scaling of the main screen pixels

Try it out... and post another video :P

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