Products > Test Equipment
Let’s Talk About LeCroy Scopes, AKA… the “Wuerstchenhund Holds Court” Thread
HighVoltage:
Yes, you are correct, my comparison is with the Keysight Infiniivision Series 3000X, 4000X, and 6000X, which I use every day in my work. And for some reasons they are just perfect for my applications.
I don't have a S-Series nor have I used a Keysight S-Series scope. (Maybe one day!) The video compares two scopes in the same price range and the LeCroy does show some basic limitations. I also think they set the S-Series to 1 GHz bandwidth. One could probably also find limitations in Keysight scopes, no question!
My personal experience with LeCroy scopes have just been terrible. And yes, I know that LeCroy makes some amazing high end scopes for research but they are in a range of not affordable to normal businesses.
nctnico:
--- Quote from: 2N3055 on August 06, 2022, 06:03:11 pm ---
--- Quote from: HighVoltage on August 06, 2022, 03:54:00 pm ---
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That is a sleazy comercial, not something I would expect from a great company..
(i don't like comparisons from LeCroy or Tek either, they all go too far in this kind of material)
Comparing 1 GHz/2.5 GS/s with a 8 GHz 40GS/s and noting the lather one is more accurate near 1 GHz...
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Actually, the effect shown in the video is sin x/x reconstruction going wrong on the Lecroy for some reason. With 2.5Gs/s there shouldn't be any problem showing a 1GHz sine wave. I'm not going point fingers as to where the problem is due to the nature of the video.
2N3055:
--- Quote from: HighVoltage on August 07, 2022, 10:22:36 am ---Yes, you are correct, my comparison is with the Keysight Infiniivision Series 3000X, 4000X, and 6000X, which I use every day in my work. And for some reasons they are just perfect for my applications.
I don't have a S-Series nor have I used a Keysight S-Series scope. (Maybe one day!) The video compares two scopes in the same price range and the LeCroy does show some basic limitations. I also think they set the S-Series to 1 GHz bandwidth. One could probably also find limitations in Keysight scopes, no question!
My personal experience with LeCroy scopes have just been terrible. And yes, I know that LeCroy makes some amazing high end scopes for research but they are in a range of not affordable to normal businesses.
--- End quote ---
If you have found an instrument that is perfect for your use that is great!
As I said, I do own MSOX3104T and use it. Among my scopes, that is the one that replaces "old school" CRT scopes... It has many good sides, and many limitations, depending of what you ...
I know they limited input filter to 1GHz, but if you look at the FFT, it is brickwall response, sampled at 40 GS/s and with full 8 GHz bandwidth and then software discards anything above 1 GHz.. Keysight can even use ERES here, because of massive oversampling, which would explain very optimistic ENOB figures...
But , biggest point here is that they took two completely differently targeted instruments and compare them at uneven metrics.. That particular LeCroy is, for instance, used a lot in power electronics industry because of 12 Bit and comprehensive analysis packages available... Super high bandwidth would even be undesirable here...
David Hess:
--- Quote from: 2N3055 on August 06, 2022, 06:03:11 pm ---LeCroy is niche, or not. They are great for R&D, science folks, test... They are "scopes with analysis lab built in". If you need that, they are first choice, if you don't, than you don't...
I find them logical to setup, but I never was a button twiddler, more of a make plan first before doing something...
We are all different and have different needs..
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--- Quote from: HighVoltage on August 07, 2022, 10:22:36 am ---My personal experience with LeCroy scopes have just been terrible. And yes, I know that LeCroy makes some amazing high end scopes for research but they are in a range of not affordable to normal businesses.
--- End quote ---
My understanding is that LeCroy oscilloscopes were originally descendant from high speed digitizers intended for the scientific research and nuclear weapon testing. These applications require high speed, long record length, and unattended operation. I think this is reflected in LeCroy preferring long record lengths while relying on post processing rather than real time processing during aquision.
I have noticed that modern oscilloscopes intended for use as automated test equipment also usually lack a responsive and easy to use front panel interface, as opposed to oscilloscopes intended for service work where the operator does not necessarily know what they are looking for, so a good interface is more important.
Martin72:
--- Quote from: Martin72 on August 05, 2022, 07:16:21 pm ---By the way, turning the channel to full bandwith changes nothing on the bandwith when Eres is +3bit on the channelmenu.
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Asked lecroy support for this.
He wasn´t sure but he think it´s because of the avaible 20Mhz BW limit why eres in the channel menu is also limited to 20Mhz.
Then a nice explaination followed about the eres filter function, I think I post it here tomorrow, maybe it´s interesting.
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