And, in logical terms, I would say that we can take a "SDS2102X+" to "SDS2501X+" terrain...
This is a PoC. No public release for now.
This is a PoC. No public release for now.
Have you been able to unlock all of the protocol decoders as well?
Quotehere is no official 2ch to 4ch upgrade
Makes sense, the only upgrade is to buy a 4-ch version
Note that on other scopes Eres filtering is typically done in hardware (and not as a math function)
It's a shame, official site shows 350 4ch model picture for the sds2102x+!
Note that on other scopes Eres filtering is typically done in hardware (and not as a math function)
This is incorrect.
ERES (which is *not* the same as HiRes on other scopes [1] and which has only been available from LeCroy and for a short while now also from Siglent) has always been a software-based math function, and this for more than a quarter of a century (the only exception being early Siglent scopes like SDS2000 and subsequent scopes right up to the SDS5kX, although I'm not sure in all cases it's really true ERES, and in case of the SDS5000X it appears ERES will soon become a math mode there).
HiRes on the other hand is usually implemented as acquisition mode, although usually also in software.
I'm just following the forum occasionally but there seems to be an increasing tendency to call HiRes modes "ERES", which is not correct.
[1] https://teledynelecroy.com/doc/differences-between-eres-and-hires
ERES "mode" bandwidth is 100MHz, according to the Siglent data sheet. So, quite a penalty at least for the higher spec'd versions. On the 100MHz version it would not really matter, I guess.
This Siglent got it both, Hi-Res and Eres, it´s up to you what to use in specific cases.
ERES (which is *not* the same as HiRes on other scopes [1] and which has only been available from LeCroy and for a short while now also from Siglent) has always been a software-based math function, and this for more than a quarter of a century (the only exception being early Siglent scopes like SDS2000 and subsequent scopes right up to the SDS5kX, although I'm not sure in all cases it's really true ERES, and in case of the SDS5000X it appears ERES will soon become a math mode there).
HiRes on the other hand is usually implemented as acquisition mode, although usually also in software.
I'm just following the forum occasionally but there seems to be an increasing tendency to call HiRes modes "ERES", which is not correct.
[1] https://teledynelecroy.com/doc/differences-between-eres-and-hires
In the end the effect is the same.
The upside of doing hires/eres in a math trace is that it can be done using cheaper acquisition hardware and you get to keep the original samples (which can be useful for other purposes).
The downside of doing filtering in software is decreased performance.
The whole point of hires mode is to do filtering inside the acquisition hardware to get extra bits and/or less noise without taking a performance hit.
And after reading the article I'm not sure whether the Lecroy method is mathematically correct from a signal processing perspective. If you are going to filter sharp edges you are supposed to get overshoots because you are filtering away extra harmonics. Hiding these is creating a false image.
And even though the SDS2000X+ isn't a class of scope we normally buy, I can immediately think of a range of people I know which would love functionality like this and who don't need the large bandwidths (or the price tag) of a LeCroy scope.
But there's a reason why LeCroy has been and still is the number one when it comes to analysis scopes, and there is a solid demand for scopes which go beyond what other scopes offer. Siglent has obviously decided it makes sense to try to offer some similar capabilities in its new upper entry level scope instead of copying what everyone else is doing, which I find laudable. And even though the SDS2000X+ isn't a class of scope we normally buy, I can immediately think of a range of people I know which would love functionality like this and who don't need the large bandwidths (or the price tag) of a LeCroy scope.
But maybe the new UI has been improved; I have not tried that.
This Siglent got it both, Hi-Res and Eres, it´s up to you what to use in specific cases.
By our new Lecroy 12bit scope, Eres hasn´t such a effect like on 8bit scopes.QuoteERES10bit "mode" bandwidth is 100MHz, according to the Siglent data sheet. So, quite a penalty at least for the higher spec'd versions. On the 100MHz version it would not really matter, I guess.Like all filters, whether they´re hardware- or software based you got bandwith limitations.
We´re talking about scopes affordable for hobbyists.
Getting a scope from rigol or siglent it is a chance for not getting crap at all.
Siglent equipment is for hobbyists only!
QuoteSiglent equipment is for hobbyists only!
It´s the truth and tautech should/will be know it...
This Siglent got it both, Hi-Res and Eres, it´s up to you what to use in specific cases.
By our new Lecroy 12bit scope, Eres hasn´t such a effect like on 8bit scopes.QuoteERES10bit "mode" bandwidth is 100MHz, according to the Siglent data sheet. So, quite a penalty at least for the higher spec'd versions. On the 100MHz version it would not really matter, I guess.Like all filters, whether they´re hardware- or software based you got bandwith limitations.Mr W posted a polite clarification, but you both keep repeating the opposite. The Siglent SDS2000X Plus has a 10bit "high resolution" acquisition mode that reduces the input bandwidth to 100MHz, and in addition it has a math filter (ERES) with preset cutoff rates relative to the current sampling rate.
There are more limitations than just the bandwidth, different filtering methods/types can have other effects on the resulting waveform as noted in that Lecroy document (the filter in the Siglent ERES may well be different to the one in Lecroy ERES). Conversely the fixed steps of the FIR ERES filter may not be as convenient as a variable cutoff frequency. Some other scopes don't increase the bit depth in high resolution mode, they just use it to reduce noise and still store 8 bit data, so the Siglent is a step up there.
Actually there are only three leaders what scope buildings concerns and this for decades.
Keysight (Agilent, HP), tektronix and lecroy.