oscilloscope preamplifier

, developing necessary drivers is an essential step. It is quite easy to develop a driver in Linux. First, the Linux driver architecture is relatively fixed, and second, there are a lot of source code for reference. The difficulty is often the debugging process, which also takes more time and requires frequent changes to some code. At the same time, the driver development process also often requires the help of the oscilloscope, logical analyzer and o

[PURPOSE] The output of 7-way PWM signals with different duty cycles is a required example of each version of the St library. The main purpose of this experiment is not to show the powerful PWM function of the ST chip, but to complete accurate output computation. [Experiment content] Output 7-way PWM signal and use the oscilloscope to measure the output. [Experiment principle] 1. Time Base unit Initialization When tim1 and tim8 use an inte

Serial peripheral interface (SPI ). Initialization steps:1. Connect to the SPI peripheral clock and set it through RCC-> apb2enr.2. Connect the peripheral clock of the reused gpio, which is also set through RCC-> apb2enrFor more information about how to connect the gpio clock, see section 8.1.4 of the stm32 reference manual.As mentioned in the manual: For the multiplexing output function, the port must be configured as the multiplexing output mode (push-pull or open-Miss ).3. Set the reusable gp

After obtaining the module, please ask zwei to help me fly the module to the Board. The final situation is a bit like a cockroach and a spider, which is hard to solve. After flying the line, use the serial port debugging assistant to send the at # command to confirm that the bluetooth module and the serial port can work normally. As a result, the luck was not good, and the commands sent out were just as if they had fallen into the sea. Zwei needs to use the

I have watched a movie about money-carrying vehicles. Although it is illegal, it is also a work of others. However, this job is too complex. It is not only a hacker (who intrude into the traffic system to control traffic lights), but also an architect, mechanic, electric welder, and a variety of gun-supporting bullet medicines, you must be familiar with the planning of urban roads, subways, and sewers. At the same time, you must use mathematical knowledge to calculate the location and time. This

; float y_0 = pht_0; /* H_0 * P [0] [0] */ float Y_1 = H_0 * P [ 0 ] [ 1 ]; P [ 0 ] [ 0 ]-= K_0 * y_0; P [ 0 ] [ 1 ]-= K_0 * Y_1; P [ 1 ] [ 0 ]-= k_1 * y_0; P [ 1 ] [ 1 ]-= k_1 * Y_1; Angle + = K_0 * angle_err;Q_bias + = k_1 * angle_err; ReturnAngle; } Waveform Display Test description-single-chip microcomputer collects acceleration and gyroscope signals, and uses the Kalman Filter above to calculate the optimal inclination, and sends the signals to the PC through t

the computer to correct the clock synchronization. D) parity bit: a simple error checking method in serial communication. In the case of parity and odd parity, the serial port sets the parity bit (one digit after the data bit), and uses a value to ensure that the transmitted data has even or Odd logic highs. For example, if the data is 011, the parity check bit is 0 to ensure that the number of digits with high logic is an even number. If it is an odd check, the check bit is 1, so there are t

, and I don't have to pay for it. It's 94 years old. At the beginning of the electronic Association, I heard my predecessors say that the computer in the lab is broken and he will use electricity. After the soldering iron was repaired, he just bought a computer and played a DOS game every day. Then, one day he suddenly had windows3.1, but the game under windows3.1 could not be modified using the game Buster, some of you have been playing the game Buster for windows on the keyboard for one night.

peewee Linux is usually relatively large, and further reduction is required. In general, an embedded Linux with no x Window can be as small as 4 m, and a Linux with X Window can also be built below 30 m. In short, the Linux system after the reduction cannot be too large, otherwise, the browser program is likely to exceed 64 MB of Dom space, and additional storage space needs to be added to the cost. On the other hand, after Linux is transplanted to STB, many hardware on STB cannot work due to l

manager asks him to test some signal output results, James only needs to make calculus on A4 paper to submit the task!----------------------------------------James worked happily until one day, and his peaceful life was broken.The manager took a small electronic device and connected it to the oscilloscope and said to James, "Look, the waveforms produced by this small device cannot be described by a simple function. Moreover, it continuously sends sig

dozens of millivolt levels, and the anti-interference threshold of TTL is 1.2 V, the CMOS circuit can reach 1/2 power supply voltage, that is to say, the ground circulation will not affect the operation of the circuit. On the contrary, if the ground wire is not closed, the problem will be greater, because the pulse power supply current generated by the digital circuit during operation will cause the ground potential imbalance of each point, for example, I tested the ground current 1.2a when 74l

Recently, I was working on a project about the tr component automatic testing system, in which I wanted to use IVI to set the testing system and instrument. Most of the new instruments support LAN ports, manufacturers all come with their own IVI drivers. As long as you follow the specified steps, you can implement IVI instrument settings for multiple manufacturers to achieve interchangeable similar instruments. This project uses oscilloscope, analyzer

1 // ----------------------------------------------------------- // Function Description: MC9S12XS128--PWM routine 3 // instructions for use: Realize Channel 3 (ptp3) output frequency is 1 kHz, duty cycle is 50% square wave, use an oscilloscope to observe 4 // Program Design: demok Studio (demok.taobao.com) 5 // design time: 2010.01.21 6 // snapshot // 7 # include

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protocol! Main functions include: Parses the type bytes in the frame and displays them on the oscilloscope through multiple channels. Frame Offset Correction (this is probably not done by the average person, resulting in data loss. As long as the data transmitted through the serial port is correct, it will be able to parse each frame without errors and omissions) Display each byte/dual byte/4 byte read in real time Saves signals and saves file n

HTML5 implements the Winamp2.9 Audio Player Plug-in, html5winamp2.9Winamp2-js is a plug-in that uses html5 and javascript to implement Winamp 2.9 audio players. The Winamp Audio Player Plugin supports drag-and-drop files, custom skins, and visual modes. Features:The actual Winamp skin files are stored on the local computer. You can call your own Winamp 2 skin at will.You can call a local audio file or skin by dragging, popping up, or "options.There are two visualization modes: the

// BeepControl (); Beep_control (); return;} // -- enter an interruption, indicating that the Count reaches 65536 -- // Freq = Freq + 65536 ;} Symptom: I/O port output can be viewed using an oscilloscope. What is amazing is that when the peripherals are disconnected and the pins are suspended (51 MCU output is pulled up by default), the I/O port output is normal when the reset is started, however, when the power is down, the output of the IO port i

is transmitted through the optical fiber, each point along the length of the optical fiber will cause the secondary scattering, and some of them will enter the numerical aperture angle of the optical fiber, reversely transmits data along the fiber optic axis to the input end. The wavelength of the scattering light is the same as the wavelength of the incident light. The optical power is proportional to the incident light power of the scattering point. The signal of the Back-to-Secondary Scatter

: 0001 Linux Foundation 1.1 root hubBus 002 Device 003: ID 046d: c315 Logitech, Inc. classic New Touch keyboar0000002 Device 002: ID 093a: 25 10 Pixart Imaging, Inc. hama Optical MouseBus 002 Device 001: ID 1d6b: 0001 Linux Foundation 1.1 root hubBus 001 Device 044: ID 5345: 1234 Owon PDS6062T OscilloscopeBus 001 Device 042: ID 18e3: 9103 Fitipower Integrated Technology IncBus 001 Device 001: ID 1d6b: 0002 Linux Foundation 2.0 root hubliwei @ liwei :~ $ We will find the following line: Bus 001 D

used, it is also possible to match the interface voltage or clock frequency of the "small thing" on the flop Hardware Designers do not have a strong IDE, no good compilers and interpreters, all hardware engineers were told in the first EDA design class:software emulation is unreliable and can only be used as a reference. The only hardware design can rely on is a solid theoretical basis and repeated experimental testinghardware designers have to sit and run. Simulation, measuring chip, welding b