oscilloscope preamplifier

, it is not a occupation, not even called a job.Finally, after the opportunity to learn, the boss gave me a software project to do (before I came to the company, the boss plans to let that part-time person to do). Do a software system, drive PCI data acquisition card, acquisition of analog signals, not only to have real-time acquisition, but also have DMA high-speed sampling. The data is then processed, analyzed, and reports are generated. The system also needs to have virtual

= 168/2=84mhz. Unfortunately, my oscilloscope is too slow for this.At least, 4 clock cycles is required to write one data. Data Latency (datlat lowest value is 2). There is one cyle to give the address, and the cyle of latency, one cyle for give the data.At max FSMC speed (~84mhz), after dividing the clock is 4, the 16-bit parallel transmission would only be ~20mhz.Bursts is possible up to + bits (both 16-bit data words). When using this feature, the

(cleaning), toothbrush (SPA);Hot Air Soldering station, for SMD Welding, for soldering iron temperature is not enough, can help increase some welding temperature. smoking Miriam, absorbing welding is the smoke that protects your lungs and eyes. suction tin wire, for solder patches, use suction away excess solder. Flux , rosin, solder paste must use strong flux, the effect of leverage! Rosin is effective for fixing patches! Solder, lead-free solder is better, solder joints relatively strong, hig

The data back in the absence of interference is perfect. I thought I could really react to the current tilt of the plane and then adjust, I was naïve to take this data directly, and adjust the PID parameters for three weeks without progress. When there is no progress, I began to think of what was wrong, I used processing hit an oscilloscope out, the data returned to the drawing of the waveform displayed on the computer, found the problem: The motor is

calculate the position of the coordinate space of the floating-point map, take the surrounding 4 pixels, and calculate a mixed color by the weighted distance (this is the legendary image convolution of unknown sensation). As a result, the image is less coarse and the transition becomes smoother, which is called linear sampling.There seems to be nothing to optimize, after all, the map resolution is placed there. However, linear filtering can exhibit imperfections when the triangles are smaller.

convolution!" "From then on, Zhang San's work was much easier. Every time the manager asked him to test the output of some of the signals, Zhang San only needed to do calculus on A4 paper and submit the task!----------------------------------------Zhang San worked happily until one day, the quiet life was broken.The manager brought a small electronic device to the oscilloscope, and said to Zhang San, "Look, the waveform generated by this little devic

repair rate is significantly lower than that of engineers, but the repair cost is relatively higher, therefore, this is the customer's choice ". Hospital Director: "My TV should not be a serious problem. It's just a general engineer ". Repair Shop reception staff: "Well, please pay 20 yuan for the repair fee first ". Hospital Director: "Why do I have to pay for the repair "? Repair Shop reception staff: "Our repair shop system is like this. Don't you have to pay before seeing a doctor in your h

variety of instruments are needed to deal with different problems. One type of resistance card is to speed up the work and solve some points that cannot be detected without drawings, while the oscilloscope and electric meter are used to present an electrical parameter. 3. Materials In the face of sufficient understanding and problem analysis, find the problem and still need enough materials (chipset, power IC, MOSFET, function chip, Flash ROM) to r

Sometimes I really need to feel that my circuit is poor enough, and I don't know anything. I want to learn the frequency-division circuit for an oscilloscope .. Bind the Q non-end of the D trigger to the data input end d to achieve two-division. To put it bluntly, the Q-End Level of the cycle of the CLK clock signal is reversed once, which is easy to understand. S and R are connected to the input end of the basic Rs trigger. They are p

Key points and difficulties: Principles of serial communication, configuration of baud rate, reception interruption, sending of word data, and use of serial Assistant Main steps:1. Set the baud rate2. Set the format of the data frame3. Write the sending function (data can be written to the data register only when the sending register is null)-byte and font4. query method (determine whether the accept register is full) and interrupt method (enable or disable interrupt) Experiment 1: Set the b

Today, TPU took out a 2440 board for debugging, and found that despite various measures, USB host always does not work occasionally. the uclk is extracted through clkout0 and viewed with an oscilloscope. When it is found that it is not working, the uclk is not stable at all. therefore, there are several factors that affect USB: External oscillator 16.9344 MHz Upll locktime of the locktime register Upllcon Upll switch for clkslow regis

, the relative content of the total harmonic of the output voltage should be measured by a Distortion Measuring Instrument under resistance load, which should comply with the requirements of the product, generally less than 5%. Frequency Generally, the frequency of the output voltage can be observed using an oscilloscope and measured using a power disturbance analyzer. At present, the output voltage frequency of the UPS can generally meet the requirem

Small board can also be used to burn the CPLD, but hex cannot be downloaded to the S52 microcontroller, then I use a programmer to burn the Hex file into the S52 chip, but the program on the Development Board still cannot run (no 0x55 data on the serial port ), it took me a whole day to understand this problem. Today, by accident, I put the burned chip on another board for use and found that the program can run normally, the serial port displays data 0x55. Therefore, we suspect that the hardwar

What are the correct development-driven steps for an embedded engineer? Summary: 1. Read the datasheet/spec of the device and the schematic diagram of the Development Board. Focus on the device connection, driver power supply, driver clock, data read/write mode, and initialization process. 2. Write driverProgram, In two steps: (1) refer to other Linux driver source code for full reference and reuse. If there is no reusable source code, first think about how to design to meet your own ne

Connection EventsMy study notes on TI's official website are now organized as followsafter two ble devices are connected, all communication events occur through the connection eventswaveform measured from one of the devices with an oscilloscope after establishing a connection for two bleRed is the timeline---the horizontal axis,Power Consumption---black vertical axisThe spike wave is connection Events.the rest of the sleeping is sleep time.Most of the

I used 232 of the communication protocols. I forgot to use Google every time I used them. Write an articleArticle, Record key issues of the 232 serial port protocol for later viewing. Test TTL level: 1. The default high level; 2. the start position is low; 3. 8-Bit Data bit,Low front, high behind; 4. The stop bit is high. Test RS232 level: 1.-5v---15v is 1, negative logic; 2. Convert the TTL to the 232 chip and convert the high level to the low level. Therefore, the 232 level displ

I just got the new board and burned the program into it, but the running address is incorrect. I didn't enter the C LanguageCheck the following four conditions:1. Check whether the chip power supply is correct2. Check whether the crystal oscillator line is short-circuited.3. Check whether the load capacitor is correct4. Check whether your reset circuit components are correct.The crystal oscillator is not reflected by the oscilloscope.The problem is that the reset circuit is incorrect. Remember t

debugging of visual algorithms on the Windows platform Integrated development Environment 2:geany, the algorithm on the Linux platform and the Cloud Tsu tune 1.3 Preparation KnowledgeSome of the previous blogs describe the basics of this system: Raspberry Pi Machine Vision Programming Environment setup (point me) Python Machine Vision Programming environment construction PID regulation of automatic control system Flying over 650 drone installations second, the

is I measured the welding).watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqva2fuz2vhcg==/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/ Dissolve/70/gravity/center ">Mobile phone software using the "Remote Control Genie" (2.9.3 version number), around the test apparatus is Skyworth TV. The design of the software is relatively good to use. Trial success, no other obstacles.2.DIY HardwareThe second step isDIYup. Googleout[DIY] cheap and easy to use - IR remote controller using an ear hole (suitable for

following internal figure (ignore the line, the line is my measurement and welding ). For software use on mobile phones, refer to "Remote Control Genie" (version 2.9.3). skyworth TV is the test electric appliance. The software design is relatively easy to use and trial is successful without any other obstacles. 2. DIY hardware The second step is DIY, and Google's [DIY] is cheap and easy to use-use the IR controller of the ear machine hole (the caster can be used for broadcasting. WAV player)