oscilloscope for dummies

In the measurement process, the high waveform capture rate is very important for the oscilloscope.Improves the ability of the oscilloscope to capture random events and low probability events. Before describing the waveform capture rate, you must first understand the concept of dead time. What isDead Zone Time? That is, the sum of the next collection and data processing time triggered by the oscilloscope

The last time I briefly introduced the use of AudioRecord and AudioTrack, this time I used SurfaceView to implement an Android mobile phone analog signal oscilloscope (PS: I have also talked about the mobile phone oscilloscope OF THE j2_version before ). Recently, the Internet of Things has become very popular. As mobile phone software developers, how can they combine with third-party sensors without modify

This example of oscilloscope includes a PC and a serial port to send messages, it is worth studying.The general idea is that the sensor node collects data, sends one packet to another base node for each 10 data acquisition, and then the base node forwards the data to the PC side. The PC side has a Java program that collects data and displays it. So run this example to two nodes, a burning oscilloscope, a bu

OriginA project under the responsibility of a colleague scans whether something in the hardware exists. Therefore, the boss wants to view the scan results through an image-based interface. Therefore, we made a small tool to read and visualize the data provided by our colleagues. The easiest way to display the scan results is the oscilloscope, but the functions of the third-party controls are too cumbersome. In the end, I decided to make a simple one m

1.1GS/S refers to the sampling rate of the oscilloscope, the front s is the meaning of sample sampling, followed by S is the second, that is, the oscilloscope sampling 1G points A second, 1G is 10 of 9 square. That is, a single ad sample can be completed within 1ns.2. Transducers with high input impedance are usually selected, and the probes are divided into active and passive. The application is more passi

Oscilloscope is in the university when the teacher taught, but out of work has not been used, and gradually forget, and now learn again. Look at the effect chart: Here is a custom histogram, and then there is a button, click the button, where the pillars will keep moving, similar to the music player in the oscilloscope beat. Similar to the previous custom view, rewrite the onsizechange () method and th

Weekend play a little Hi, did not update the blog, today to make up, this oscilloscope is in the university when the teacher taught, but out of work has not been used, and gradually forget, and now learn again. Look at the effect chart: Here is a custom histogram, and then there is a button, click the button, where the pillars will keep moving, similar to the music player in the oscilloscope beat. Simil

Zookeeper Let's take a look at the program running in this article (the screen recording speed is slow, and the real machine runs more smoothly ): In this article, the program uses the 8000hz sampling rate, which requires a high real-time performance for the x-axis drawing. If the resolution of the x-axis is not reduced, the program's real-time performance is poor. Therefore, the program reduces the x-axis data range by 8 times ~ 16 times. Because the 16-bit sampling is used, the height of th

Some people used the PC sound card input (microphone hole) to simulate the oscilloscope, but few were implemented using mobile phones. Using MMAPI of j2m's to simulate the oscilloscope, the specific effect is slightly inferior to that of a smart machine, because the smart machine can read the microphone input stream in real time, while j2m's still need a short buffer to constitute a blocking, however, it is

My Android advanced tutorial ------) Android implements music oscilloscope, balancer, bass, and audio field functionsThis example is from crazy Android handout. To implement specific functions, you need to understand the following APIs: MediaPlayer Media Player Visualizer spectrum Equalizer balancer BassBoost bass controller PresetReverb preset sound field controller paintingThe following figure shows the effect.Portrait WaveformBlock WaveformCurve Wa

Use SurfaceView to display the sine curve, simulate the oscilloscope, and surfaceview the sine. As we all know, views are repainted through refresh. The Android system re-painted the screen by sending a VSYNC signal. The interval for refresh is 16 ms, if the view completes all the operations you need within 16 ms, the user will not feel stuck visually. If there are too many operation logics to be executed, especially the interface that needs to be r

Http://jingyan.baidu.com/article/91f5db1bf715c01c7f05e39a.htmlHttp://cn.tek.com/learning/oscilloscope-tutorial?utm_source=Baidu-Success_Eventsutm_medium=cpcutm_ CAMPAIGN=SUCCESS_EVENTS_SUCCESS_EVENTS_CN (S) _SUCCESS_CN_SCOPE_GUIDECOVID=COVTEKBDU81000000009393SUTM _term=cdrsbdu961sHttp://zhidao.baidu.com/link?url=CRYtFiBdcjsiH6fqDHlHkdNAMLJg43NT6HHsUodUsDySGy5aZkIzZ3vHwi7zIfiyPpXVkvgdLF9rnfPqW84mZq1. Later found that the network transformer instability

Digital oscilloscope GUI base on SDL. 1. soure code: /* Bring up a window and play with it */ 2. Run on x86: 3. How to Use SDL APIs: 1). sdl_init (sdl_init_video ). Initialize the video devices such as framebuffer, direactfb, X11 or OpenGL etc. 2). Set the video device. Sdl_surface * screen, * window; Screen = sdl_setvideomode (W, H, 32, sdl_swsurface ); 3). Draw some graphic data on the backbuffer (swsurface ). Uint32_t color;Sdl_rect rect;

My Android advanced tour ------> Android implements music oscilloscope, balancer, bass and audio field functions, and android advancedThis example is from the crazy Android handout. To implement specific functions, you need to understand the following APIs: MediaPlayer Media Player Visualizer Spectrum Equalizer BassBoost bass Controller PresetReverb preset sound field controller Painting The following figure shows the effect. Portrait Waveform

Engineers who want to see these stories don't take a shot at their heads and think they've done the same thing. I have been in the field of testing and surveying for more than 10 years and have experienced many interesting stories. Of course, the characters in these stories are my placement, if there is a similar, purely coincidental. One man, at a cheap price, bought an adjustable linear power supply to power the part under test. The nominal noise value on this power supply specification is ver

The previous simple introduction of the Android program in the development of the use of Audiorecord and Audiotrack, this time combined with Surfaceview to achieve an Android version of the phone analog signal oscilloscope. Recently the Internet of Things is very hot, as a mobile phone software developers, how to do not modify the phone hardware circuit under the premise of integration with third-party sensors it? The microphone is a good ADC interfac

081107 Dummy, stupid. Chapter chapter. Welcome to ASP. NET 2.0 everyday apps for Dummies, the book that teaches ASP. NET 2.0 WEB programming by example. In the book that you'll find eight complete ASP. NET applications. We're not talking trivial (mediocre) hello-world-type applications here. Instead, they're real-world applications like shopping carts and discussion (discussion) Forums (forum ). You can use any of them as-is, or modify them as you see

J. Timothy King wrote a great article: Twelve benefits of writing unit tests first ). Unfortunately, what he said at the end of the article is completely superfluous. However, if you don't want to get rid of the old habit of writing code first, if you think that self-stick is more important than designing good software, Well, I am sorry for you. Using your pity on people who do not agree with you is not the most effective way to promote your claim. Let's take a look at Mr t's example. He bega

This article uses the popular saying "dumb camera" to create the word "dumb Ubuntu", which means automatic or semi-automatic Ubuntu. In this case, the actual level of Ubuntu is not low! Is this true? As you know, the actual users of dummies Ubuntu may not be really dummies. Recently, the Beta3 version of Ubuntu9.10 has just been released. From the perspective of it, the beautiful faces are indeed extraordin

Provides various official and user-released code examples. For code reference, you are welcome to exchange and learn about the complexity of the official permission system. Beginners are often confused and confused. This is my dummies version transformation. Please refer to your tasting. The official rbac. I read a lot of articles, although I finally understood it, but it does consume a lot of brain cells. It also requires database support. It is diff