Products > Test Equipment
Siglent SDS7000A 3, 4 and 6 GHz 12 bit DSO's
JPortici:
--- Quote from: Performa01 on January 07, 2023, 04:32:55 pm ---
--- Quote from: JPortici on January 07, 2023, 12:40:27 pm ---
--- Quote from: tautech on January 07, 2023, 07:59:39 am ---
--- Quote from: JPortici on January 07, 2023, 07:40:05 am ---
--- Quote from: Martin72 on January 02, 2023, 10:56:09 pm ---The first thing my colleagues do is to reduce the memory depth.... ;)
It slows the system down - Nothing for unpatient users..
--- End quote ---
It also allows for more history waveforms :) i do it for both reasons. scope set at 12.5MPts, unless i need the samplerate at lower timebases
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SDS5000X right Jack ?
Have you not installed recent firmware that allows setting of a fixed sample rate ?
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Yes. I did, but i don't care for the function. I've always been content in how the scope operated out of the box and i'm used to it. I tried the other memory management modes but failed to find a scenario in which either would be an advantage over the Max Memory we all know and love (or a big enough advantage that i bother going through the menu to find the optimal setting from time to time)
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Your initial statement was very clear. You stick to 12.5 Mpts memory except when you really need longer captures = slow timebase settings where the samplerate drops below your requirement for the acquisition bandwidth. So what you want is sufficient samplerate rather than constant samplerate - the latter is only useful in some very special cases, e.g. where the scope bandwidth depends on the samplerate in a less familiar way, such as in ERES mode.
That's what generally is considered best practice, as 10-14 Mpts is some magic region for all scopes based on that current Zync platform... ;)
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the ERES hint gave me an idea, i'm still waiting for digital filters on the math (or on the input) channels, probably i can combine fixed sampling with ERES so i can achieve a low pass filter i can control
Did not know of this magic region but yes, 12.5Mpts proved to be a good compromize between enough samples (helps with SENT/CAN decoders at the standard frequencies) and UI Speed
Martin72:
--- Quote ---i'm still waiting for digital filters on the math (or on the input) channels
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You got a 5000X, right ?
tv84:
--- Quote from: JPortici on January 07, 2023, 12:40:27 pm ---Yes.
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Martin72:
Argh, good morning... ::) 8)
OK, so I guess filters will come with one of the next firmware updates(memory management as a kind of prerequisite has it already).
Martin72:
--- Quote from: JPortici on January 07, 2023, 12:40:27 pm ---Yes. I did, but i don't care for the function. I've always been content in how the scope operated out of the box and i'm used to it. I tried the other memory management modes but failed to find a scenario in which either would be an advantage over the Max Memory we all know and love (or a big enough advantage that i bother going through the menu to find the optimal setting from time to time)
--- End quote ---
Me too.
"Growing up" with Lecroy scopes (93XX, waverunner LT, wavesurfer, waverunner 9000, HDO) I had never missed anything in that direction.
So the discussion about the memory was new to me when I entered the forum here. ;)
Should I use the new filter function(on my 2000HD), this could change, but even then I don't need to worry, because the scope takes care of that for me - Even if it first asks whether it should change... 8)
(With my two private Rigol Scopes Auto-Memory was the default setting, that will have its reasons).
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