Today I went to the Chenghuangmiao Electronic Market to actually look at the oscilloscope. One company sells Puyuan and Lilip, the latter of which carries the OWON trademark.

The price of Puyuan’s 1052E is too high. After connecting its own 1K square wave to the 500ms level and looking at the expanded waveform, the expanded waveform is very smooth and feels unreal. It lacks the actual waveform jitter and may be The reason is insufficient bandwidth. In addition, in comparison, the equivalent sampling rate is only 10G and the price is high, so there is no need to worry too much. I just forgot to look at the signal interference in the 2mv gear.

OWON definitely doesn’t consider it. The parameters and functions are just toys. But after the boss turned it on and looked at the screen, he was attracted. The 8-inch VGA screen is so cool to see the waveforms. It’s not at all. These 5.7-inch QVGA trapezoidal slopes can be compared. They also develop 1K square wave signals. The rising and falling edges are very smooth. Not to mention the benefits if they are used to see the glitches of messy waveforms, just like high-definition movies and VCDs. The difference is the same, it’s really eye-catching.

He turned around and left.

Good workmanship means that the quality may always have problems. For example, the Daikin air conditioners and Mitsubishi air conditioners at my home (Japanese products, don’t hit me.) It has been 7 years, and the cooling system has never been interrupted, and the cooling has not been weak. Naturally, I don’t know how their after-sales service is, and most of my classmates’ homes have Haier appliances, including washing machines, refrigerators, and air conditioners. They told me several times that Haier’s after-sales service is great, fast and enthusiastic, and I listened. That’s depressing!

Let’s take a look before talking about it. Let’s take a look at the SDS1202CM and UTD2102E on the window. 200M compared to 100M is really unfair. There is no way. The boss just doesn’t have SDS1102CM. After receiving both 1K square waves, it is very difficult. Strangely, Dingyang's wave will jump up and down. The boss also said that Dingyang's wave will always be like this. I don't know where the interference is. UTD2102E will not jump, but the second half of the wave will flash regularly and is unstable. Alas!

After hitting the 500ms level, STOP, and looking at the extended waveform, it turns out that Dingyang’s 2M storage advantage comes out. It can adjust a wide time base range forward and backward, and can clearly display the capture results. In addition, it may be due to the 200M. The expanded waveform content is obviously much richer than that of Uniide. Unilide's is so-so, but it is fully sufficient for analysis. However, the expansion window is split into two windows, upper and lower, which is more intuitive and user-friendly. It is very beneficial for viewing waveforms with a long change period, and you can clearly know the current expansion. Which section of the waveform is it?

Let’s look at the 2mv, 2.5ms waveform interference on both sides. They are almost the same. They are all thorns like hedgehogs, but they are normal. The same is true for the TDS210 I have used.

In terms of performance, function and price alone, Dingyang is a more suitable choice. The operation of the buttons and knobs is also more user-friendly than that of Youlide. It is very convenient and the interface is good (actually The interface is basically the same as that of Puyuan, haha!). But I also mentioned the new 2102CEL from Unilever, which also has 100M/1G/50G/1M storage, but has a 7-inch WVGA resolution. The boss said it is not in stock, it is new and has not arrived yet. This really confuses me, because we are working on POWER, and the waveforms are much more complicated and messy than those on digital circuits. We are particularly concerned about the unfolding effect after capturing the waveform under a slow time base. The unfolding effect of the TDS210 we are using now is completely insufficient. Once expanded, they are all dimly visible dotted lines, the storage depth is too small, and the waveforms captured under QVGA are all jagged after expansion.

However, the newly released 2102CEL from Unilever does not have complete information. It is not clear whether it has digital filtering and waveform expansion effect. I asked the dealer to consult the manufacturer before contacting me.

Nowadays, Sanhui has a lot of publicity. After looking at it, only the 1000B series is worthy of consideration, and it is only 25G equivalent. Other indicators are average. The same 7-inch WVGA screen is a little more attractive, but The price is not cost-effective at all, and the quality has not been proven by the market, so I dare not consider it.

It would be great if Puyuan, Antaixin and Dingyang could also produce models with large screens. It would be much easier to choose.