Tinto USB oscilloscope after hand, really let me experience a rich software functions, this is my office to use digital oscilloscope is unable to compare,
For my office use oscilloscope is high interest DE UTD2202, more than two thousand pieces of the oscilloscope is not expensive, sample 1 gs/S, the maximum bandwidth of 200 MHZ, function without USB oscilloscope is rich, is the main characteristics of sampling rate, high bandwidth, the basic function of oscilloscope are, nor how expensive, is introductory price level!!!!
Le billiton USB oscilloscope, by contrast, the price will be cheaper, sampling rate and bandwidth are much lower, but in small, portable, feature-rich software, these features are dedicated digital oscilloscope, not by
Here I'll use a few scenes, using the same circuit, respectively to the contrast test, check the two oscillograph imaging and parameters measuring contrast situation,
A, crystals circuit measuring
MCU chip, I have a 32.768 KHZ, commonly used 8 MHZ crystal passive vibration, and 26 MHZ active crystals, 26 MHZ active crystals is beyond the joy of extension USB oscilloscope maximum bandwidth, so only test the front two crystal vibration waveform signal,
32.768 KHZ waveform comparison:
8 MHZ waveform comparison:
The above two are measuring vibration waveform, basically is a sine wave, two waveform comparison, gap is not big,
Second, the power supply ripple measurement
My test is "ripple on the output of 3.3 V power supply, from the ripple, the USB how oscilloscope effect is not obvious, the data and waveform, lost a lot of information,
Three other signal measuring
An LED lamp circuit board, according to the interval of 1 s in flashing, I tested, the waveform almost see no difference of the two,
, of course, in front of the tests are standard signal, sine wave, square wave, let me point, DC - DC circuit waveform, test points on MP1584 1 foot,
USB oscilloscope waveform is as follows:
My high interest UTD2202 oscilloscope waveform is as follows:
Two basic gap is small waveform, frequency at around 1 MHZ,
Finally, I once again put the oscilloscope on 8 MHZ crystal vibration, and then made a FFT, waveform below,
Although the results came out, but I didn't see the front which one is the beginning of the wave is what meaning, of course, I basically is used at ordinary times less than the calculation of FFT,
Four, the use of summary
Le billiton USB oscilloscope on the waveform acquisition accuracy, and a dedicated digital oscilloscope gap is very small, basically but on small signal collection, there are some small information will be lost, may be sampling precision is not enough, after all, both the cost and index gap there,
In addition from the use of the continuity of fluency and waveform display, definitely yes digital oscilloscope dominant, but le billiton USB oscilloscope is also very obvious, the advantages of small things, feature-rich,
Le billiton USB oscilloscope although cannot completely replace the use of our daily development request, but it can have a good effect, when we face on a business trip, the problem of screening, have the edge tool, will bring you a different experience,
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