20mhz oscilloscope

first case. Because the starting standard frequency = terminate the standard frequency, there are only two situations in the first case to draw a dashed line. ③ Termination Standard Frequency In this case, the terminating standard frequency is first identified and the dotted line between the starting frequency and the termination frequency is incremented according to the terminating standard frequency. 4, other issues (1) Refinement interval Because the interval of the same frequency segme

optical interface. The transmission system of optical fiber is much larger than coaxial cable, the maximum transmission bandwidth of general small coaxial cable is about 20MHz, and the maximum transmission bandwidth of coaxial cable is about 60MHz. The data transmission rate of a single optical fiber can reach several Gbps, and the transmission distance can reach dozens of kilometers without the use of repeater. 3. Process blocking reason (A) A. T

130Mbps, perhaps to change the default bandwidth. To reduce network interference with old WiFi devices, Wireless N Routing and Access points use 20MHz bands. Some of the performance growth in Wireless N is due to the conversion to the 40MHz band, a technique known as channel binding technology (Channel bonding). Therefore, to achieve maximum speed, you need to change this default setting first. Open the browser, enter the routing IP address to the

CDMA2000 standard developed from IS-95 CDMA, and to the mobile phone users backward-compatible, that is, the existing IS-95 CDMA mobile terminals can still continue to use in CDMA2000 network. According to the development of CDMA2000, can be divided into 1xRTT and 3xRTT phase, 3xRTT CDMA2000 provides the maximum 20MHz channel bandwidth and 2.4MB/S data transmission rate. Because of the 3xRTT technology span and equipment investment, the current develo

will have to also." ”3, see example Drive, Linux kernel driver, generally have a relatively simple example code, specifically, see the first step of the TXT document. With this simple example code, we further clarify how the drive works.4, good, ready to work to complete, here should formally start. Write it yourself? No, or secretly lazy, online to find ready-made, there is just your chip driver, really lucky, direct use, of course, often can not be used directly, to debug under the next line.

A requirement for a work item is to monitor the frequency of a certain gpio input square wave! Popular speaking is a most simple oscilloscope to measure the frequency of the square wave! But just the frequency of the square wave! The frequency range is 0~200hz, and the frequency square wave is not always 200HZ, most of the time it may have been 0 or a lower frequency square wave! At the same time to take into account that the square wave may have been

chip quality is not allowed, such as the condition does not allow the memory side of the chip to unload, to see if the problem can be solved, if not to replace the chip on the other side, until successful (so the welder is afraid to repair the phone's people can reach). Of course, conditional use of oscilloscope detection that will be more than half the effort, after this method, because the memory side of the chip is removed, so the memory is only o

computer card is not yet supported hot plug.Prevent static electricityComputer internal integrated chip is very sensitive to static electricity (CMOS chip can withstand electrostatic impulse voltage for 200v,dram, EPROM chip for 300v,ttl chip for 1000V), a little attention may cause integrated chip permanent damage, so in the plug all kinds of cards before, Be sure to put the electrostatic discharge on the hand, otherwise it is very possible to penetrate the integrated chip, especially COMs int

paint scraping clean, in the exposed wire place wax, and then with a needle down the lines to the candle, then the above is dripping silver nitrate solution. Then you will use a universal table to confirm whether the breakpoint is connected properly. Just like this one, the breakpoint is ready. Note that one of the company, do not be impatient, like the motherboard on some places on the line between the distance is very small, can not get a short circuit. (2). If the electrolytic capacitor, yo

Parameter update to complete the parameter setting. Given the common situation, the parameter settings are not memory, and each entry displays common default parameter values.-Do not support hot Plug and unplug, hot plug will report errors, it is recommended to close the serial port after the serial port Plug and unplug.Waveform display-Eight waveform display channels with different color representations-Waveforms can be dragged, enlarged, and scaled down-Frame number and frame rate display abo

I can't open the question summary 1. The boot line is not normal: with external power supply, observe the changes in Ammeter, if the ammeter is not responding, is generally the boot line disconnection or the power-on key bad; 2. Battery power supply circuit is not normal: through the battery-powered mode or external interface power supply mode for power supply, in order to distinguish the fault range and determine whether the electronic switch is normal; 3. Power IC is not normal: the control

nbs P;return ret; else return-eio , a strange question has a good explanation recently: after I2C configuration sensor, play music through Aplay without movement (no sound), but read codec through Snd_soc_read () ( wm8960) The value of each register is normal (and the same configuration as normal playback), with an oscilloscope measured codec Lrck pin, nothing (this should have clock output, because Codec is configured as Master mode).

oscilloscope! Skills other than technology are the more important skill!! From ancient to ancient, American Japan, all the same! [4] More friends who make social people! Instead of just interacting with engineers and thinking that there is a common language, it's more important to socialize with other people, and if you want to be a boss or top management one day, you're dealing with these people all day. Learn about their experiences, thinking habi

Today, when using 430 to communicate with the clock chip via the I²c interface, the clock chip always has no response (NACK). Use the oscilloscope to observe the signal waveform and find the sending slave address different from your own settings. After viewing the 430 User guide, it is found that there are deviations in the configuration understanding of the address. The clock chip datasheet is written on the address 0b1101000. Therefore, according t

output light signal. At present, IC vendors have provided integrated solutions for CMOS processes. d) Receiving circuit design Because this part is the traditional continuous mode of light receiving mode, the use of mature pin-tia devices and integrated amplifier IC technology scheme, this is no longer described. e) test Results All samples were tested using Agilent 86100A oscilloscope, MP1605 error meter and SDA6020 serial Data Analyzer. 4. Con

flash data bits are 8 bits, Ccs3setup retains the default configuration, and click Generate AIS to generate the. bin file. 3 Burn write NAND flash Connect jumper, configure boot Mode selection for NAND 8, connect to arm core in CCS DSP project (only need to connect to arm core when burning NAND flash), the following figure is after connecting arm core success: Left-click on the Texas Instruments xds100v2 USB emulator/arm9_0 (Suspended), clicking on the CCS menu bar Run, load, load program, l

D*t=n*t, Similarly, it is possible to find out how much time reference n is required between PWM low-voltage. Because here we are generating a cycle of 1ms (1kHZ) PWM, so the time to set the interrupt base is 0.01ms, and then interrupt 100 times is 1ms. Within the interrupt subroutine, you can set a variable such as time, within the interrupt subroutine, there are three important statements: 1, when time>=100, time clear 0 (this statement guaranteed frequency is 1kHZ); 2, when the Time>n (n sho

the operation of the machine with the oscilloscope measurement and observation of the relevant components of the waveform, and the normal waveform comparison, judge the fault site. 6. Simple after complex and combined with the composition of the principle of judgment With the wide application of LSI, the control logic is more and more integrated on the motherboard, and its logic correctness is more and more difficult to judge by measurement. It can

different uses the oscilloscope. Oh, PC upload a serial drive, then the PC Keyboard/monitor for the embedded board used. 2.2bootloader It's like a knot, you don't understand it one day, and you can't safely develop embedded systems, even though you can write the software very well. When a traditional PC is powered on, the CPU core instruction pointer (such as CS:IP) points to a piece of cured code in the system, such as the BIOS, which is burned i

caused by the failure of the post, some technicians are advised to use a separate socket. Also some netizens believe that the "big cat" power quality is generally bad, anti-interference ability is particularly poor, especially for a long time to use a severe fever, resulting in equipment failure. Therefore, it is recommended to switch to high-quality power supply (only the price is more expensive). 3, the equipment (including the host) for good shielding and grounding Have you ever tried to m