20mhz oscilloscope

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Nebula Testing-get an in-depth checkup for your Android app

platform quickly judges the execution logic, performs synchronous operation and analysis, and gives the quality diagnostic report of the tested application while the user manually clicks on the application to be tested. For example, the test process of critical module leakage analysis, testing adequacy measurement, code static quality analysis and the collapse of the white box-level capture and analysis. If you have questions about the test results, you can use the client's code coverage visual

Nebula Testing-get an in-depth checkup for your Android app

on the application to be tested. For example, the test process of critical module leakage analysis, testing adequacy measurement, code static quality analysis and the collapse of the white box-level capture and analysis. If you have questions about the test results, you can use the client's code coverage visualization to directly validate the results. In addition, all the data from the Nebula test can be traversed in the version, and all data analysis results specifically consider the aggregati

Discussion on the Stability of I2C communication

I recently encountered some problems when debugging I2C. I hope you can help me with similar problems. Keywords: I2C sub-steady state low speed signal dejitter [Prelude]In the system, the I2C slave function must be implemented in the CPLD to communicate with the I2C interface of the CPU, so as to expand the gpio port of the system. Therefore, according to the requirements of I2C protocol, an I2C slave module and testslave module are compiled with OpenGL, and then simulated and verified in Model

Real people, truth, it sales and procurement

The company bought an oscilloscope a few days ago, and the process was like this: 1. The development department bought an oscilloscope and found a proxy for XX Company in Guangdong on the Internet. 2. So I called:Engineer a said: How much is XX oscilloscope? Sales lady B said: "XXX price" Engineer a said: We are going to buy a batch. Can we get a discount. Sales

Prepare for Power Consumption debugging and prepare for Power Consumption debugging

Prepare for Power Consumption debugging and prepare for Power Consumption debugging Prepare for Power Consumption debugging December 17, 2014 I. Basic Concepts What is power consumption testing? Power Consumption testing refers to measuring the current of each module in various power consumption states by using various tools (mainly oscilloscope, ammeter, a

Nebula Testing-get an in-depth checkup for your Android app

clicks on the application to be tested. For example, the test process of critical module leakage analysis, testing adequacy measurement, code static quality analysis and the collapse of the white box-level capture and analysis. If you have questions about the test results, you can use the client's code coverage visualization to directly validate the results. In addition, all the data from the Nebula test can be traversed in the version, and all data analysis results specifically consider the ag

Nebula Testing-Android Application deep examination Professional Platform

on the application to be tested. For example, the test process of critical module leakage analysis, testing adequacy measurement, code static quality analysis and the collapse of the white box-level capture and analysis. If you have questions about the test results, you can use the client's code coverage visualization to directly validate the results. In addition, all the data from the Nebula test can be traversed in the version, and all data analysis results specifically consider the aggregati

FPGA Configuration method

cycles transmit 1 bits of data.The As configuration device is a nonvolatile, flash memory-based memory that allows the user to program the configuration chip using Altera's Byteblaster II load cable, Altera's "Altera programming unit", or a third-party programmer. It interfaces with the FPGA for the following simple 4 signal lines:. Serial clock input (DCLK): is generated by an oscillator (oscillator) inside the FPGA in configuration mode, which is switched off after the configuration is comple

Decoupling, bypass capacitance

earth knows), it can be seen that the bypass capacitor is mainly for high-frequency interference (high isIn contrast, it is generally believed that above 20MHz is high frequency interference, and below 20MHz is low frequency ripple.What is decoupling? Decoupling (decouple), the earliest used in multistage circuits, to ensure the transmission between the pre-The measures taken to pass the signal without aff

Intel 802.11n Wireless network card connection 802.11n No line by not achieving expected performance

Failure phenomenon: Intel 802.11n Wireless network card, theoretical connection speed of 300Mbps, however, the actual use of the process, often only dozens of M connection speed, the highest not more than 144Mbps, as shown in the following figure: Solution: If you encounter this problem, you can set it below and the connection speed can be increased to nearly 300Mbps. 1. Set the wireless router to use channel binding (40MHZ). By implementing channel binding on a wireless router,

Wireless network card connection 802.11n No line by not achieving expected performance

As shown in the following illustration: Solution: If you encounter this problem, you can set it below and the connection speed can be increased to nearly 300Mbps. 1. Set the wireless router to use channel binding (40MHZ). By implementing channel binding on a wireless router, routers can use 2 channels at the same time (the default is 20MHz). Channel bindings are also referred to as blending modes. 2. The following ada

Network security protection measures for a single user on the home computer

equipment for basic electrical and electronic technology skills. In order to do better, you can also add some practical lab content related to the professional needs. For example, capacitors are used in automobiles, but there is no requirement in the measurement content in the teaching materials. You can add experimental items for measuring capacitors. There are many sensors on automobiles, some sensors can be directly measured with A multimeter, so the experimental items of the measurement sen

Linux Driver Development VI (instruments for hardware knowledge that must be understood)

into general instruments, such as oscilloscopes, multimeter and other instruments, professional strong special instruments, such as old Xie Digital TV, this professional field will have a lot of special instruments, such as SFU, VM700, TG39 and so on. by function: Lao Xie The instrument is also divided into two categories, output class (signal source) and input class (measuring instrument). In the back of the content, Lao Xie will list some of the instruments, friends can follow the tw

AC DC Circuit

What is the function of the diode in AC DC power? Output voltage? The output current is determined by the maximum rated current of the diode. The 1n4007 diode (Universal Silicon Rectifier diode M7) is rated at 1 A and the output current is less than 1 a. If you want to understand it, talk about it from the AC power.220 Volts AC Point has two lines, a 0 line, his voltage is always 0 volts, the other is the FireWire, the voltage is changing, a moment is 220 volts, a moment is negative 220 volts, o

Android Test Tool threadingtest Open API Interface Description

Threadingtest (TT) The first phase is an Android white box test tool, using offline detection method, based on the protection of User source code, the use of plug-in, fifth-generation coverage and other technologies, for development engineers and test engineers to provide a set of efficient quantifiable, visual communication tools. In contrast to other test tools, TT automatically generates the relationship between test cases and code and function coverage in automated tests, and is presented in

Hardware and Software debugging nine method: The third rule don't want to see

Imagination, the cause of a lot of problems, the actual reason only to see to find! If guessing how a failure occurs, it often fixes problems that are not bugs, wasting time and destroying other places, so don't do that. In the medical field, there are stethoscope, blood test, X-ray, B-Super method. Also in software, the method of observation is to set breakpoints, add debug statements, monitor program values, and check memory and so on. Hardware methods such as

LTE learning Path (1)--development history of mobile communication technology

Multiple access is a multi-address method which is realized by the different code sequences formed by spread spectrum technology. V. LTE (long term Evolution) projectLTE is the evolution of 3G, not a widely misunderstood 4G technology, but a transition between 3G and 4G technology, is the global standard of 3.9G, which improves the 3G air access technology, using OFDM and MIMO as the only standard for their wireless network evolution.LTE provides a peak rate of 326Mbps and downstream 86Mbps at

802.11n MCS Guide

MCS (modulation and Coding scheme, modulation and encoding strategy)The configuration of the 802.11n RF rate is achieved through the MCS index values. The MCS modulation encoding table is a representation of the 802.11n to characterize the communication rate of the WLAN. MCS takes the factors that affect the communication rate as columns of the table, and the MCS index as rows, forming a rate table.Therefore, each MCS index actually corresponds to the physical transfer rate under a set of parame

What are the recommended settings for 802.11n connections?

These are the default settings for Intel wireless adapters that support 802.11N. These recommended settings can be found on the Advanced menu of intel® proset/wireless software. Property Value 802.11n channel width of band 2.4 Auto (no longer just 20MHz) 802.11n channel width of band 5.2 Auto (no longer just 20MHz) 802.11n mode Enab

U-boot for smart210 (rookie from zero-learning LINUX) __linux

:linear, 1:linterleaved, 2: Mixed #define DMC0_MEMCONFIG_1 0x00e00323//MEMCONFIG1 #if 0 #define DMC0_TIMINGA_REF 0x00000618//Timingaref 7.8us*133mhz=1038 (0x40e), 100mhz=780 (0x30c), 20mhz=156 (0x9C), 10MHz= (0x4e) #define Dmc0_timing_row 0x28233287//Timingrow for @200mhz #define DMC0_TIMING_DATA 0x23240304//Timingdata cl=3 #define DMC0_TIMING_PWR 0x09c80232//Timingpower #else #define DMC0_TIMINGA_REF 0x00000618//Timingaref 7.8us*133mhz=1038 (0x40e),

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