For this topic beginner, I don't like to add a "junk" after ones country. US junk? Britain junk? Add your own country name before that word, does it sounds good?
It doesn't sound good but it describes the truth. The UK has certainly produced more than their fair share of crap products, as has the US. I've also seen crap made in Germany. So what?
Crap products are made in every country. However, the fact remains that today China is one of the largest (if not the largest) producer of cheap crap. A few decades ago it was Japan, which later has evolved as a producer of high quality and high precision products. China certainly will evolve as well (first signs are visible, as chinese manufacturers start turning away from producing for the lowest possible price only towards higher quality stuff). I guess in 10 years chinese kit will be regarded as high quality as well. But not today.
Second, when you comes to someone didn't like your express way, do you always like to ask them to go away and play themselves?
I didn't *ask* you to go away (it was you who was making demands as to what others should or should not do, remember?), I merely suggested that if you can't accept the tone in here that somewhere else might be a better place for you, because this place is unlikely to follow your demands re "clean" language.
And it really does make you look like a hypocrite to come to a forum and complain about people labelling stuff as "crap" when this very forum is operated by a guy who makes a living from doing exactly that on video to a large audience.
I have no meaning to offend you, I just express my opinion in a way you didn't like.
No problem with expressing your opinion. Just stop telling others what they should or shouldn't say. Remember, it's Dave's turf, not yours (or mine).
But I'd say we leave it at that and come to something more on-topic:
Third, I didn't know how do you know the WaveACE comes from SIGLENT1000CML.
It's a well known secret that the LeCroy WaveAce Series are Siglent scopes. The original WaveAce 100 Series were Siglent SDS1000CM scopes, and the current the WaveAce 1000 and 2000 Series are Siglent SDS1000CML and SDS1000CFL scopes. All made by Siglent for LeCroy, as confirmed by various sources (incl. LeCroy themselves). In fact, even the firmware is made by Siglent, LeCroy merely provides the name. You can even flash the LeCroy firmware on the equivalent Siglent device.
LeCroy does the same with the WaveStation waveform generators which are rebadged Siglent SDG1000 and SDG5000 devices.
About the video you referred to (if WaveACE really is 1000CML)
The video shows a WaveAce 100 which is a SDS1000CM not CML.
I have borrowed a SDS1204CFL(though not CML), do the same thing did by the author, but that problem didn't accur(the timebase is OK). Have you seen that problem both on 1000CML and WaveACE by yourself?
The problem didn't occur because you used a SDS1000CFL (a different scope) which is much newer than the SDS1000CM. These problems have been fixed in the newer scopes.
But yes, I have seen the original problem on the WaveAce a customer in continental Europe bought at that time, and on a Siglent SDS1000CM.
Don't get me wrong, the Siglent SDS1000CNL/CML scopes are nice products
for very cheap low-end scopes made by and sold under the name of a chinese manufacturer. I also don't think they're crap (although I've seen some nasty bugs and do find the UI horrible at times) because they cost very little money and are solid enough for beginners as a first scope. Nothing wrong with that (or the very limited functionality) under these circumstances.
However, the WaveAce 1000 carries the label and the price tag of a big name manufacturer. The bugs in the Siglent scopes can easily be forgiven for a low-cost scope from a chinese manufacturer like Siglent, but they are simply not acceptable for a product from a reputable brand like LeCroy, and especially not when their variant is at least 4x as much as the Siglent original. At that price, the WaveAce doesn't compete with the Siglent SDS1000 Series or the Rigol DS1000z or the cheap Owon scopes or other cheap scopes, it competes with more expensive scopes like the Rigol DS2000 or Agilent DSOX2000, and has to be measured by that standard. And by that standard, and considering the price, the WaveAce Series is crap, plain and simple.
And I'm certainly not alone with that opinion. For example, the customer who bought several of the WaveAce scopes was so dissatisfied that they won't consider LeCroy for anything else. Which is a shame as they do make great high end scopes (the best ones in my opinion), but because of LeCroy's stupid move to oversell Siglent scopes the customer now buys its high end kit from Agilent and R&S.