20mhz oscilloscope

, namely 1.4mhz,3mhz,5mhz,10mhz,15mhz,20mhz. The lower bandwidth of 1.4MHz and 3MHz allows for easy CDMA2000 use of the spectrum to be migrated to LTE while helping to facilitate the migration of GSM and TD-SCDMA to LTE. The purpose of a variety of bandwidth is to adapt to different frequency of the use of the scene, such as the frequency of the available bandwidth of less than 10MHz, then the LTE system can be configured to 5MHz use.not all channel b

a series of digital signals accumulated on the oscilloscope , the shape of the image is similar to the eye, it is called eye diagram.When using the afterglow oscilloscope to observe the transmitted data signal, the time signal of the measured system is used to control the scanning of the oscilloscope by external triggering or external synchronization, because th

accurately determine whether the code changed by developers affects other functions, the program can only be tested again. However, through reverse tracing, the tester clearly sees the test case table affected by the changed code, and through the cumulative coverage technology, this greatly shortens the regression testing time. ※Shanghai zero one assembly Information Technology Co., Ltd. has a patent for "a test device and method based on case and source code bidirectional traceability ". Real

built-in metering table was a very good tool, however, when you make movies and TV series that are relatively cautious about program production, the reflection metering table may cause a deviation in the exposure volume. Although Sony's camera has improved, there are different types of sensitive parts in the digital camera, allowing users to select. Users can select a small block in the center of the screen, which can be the lower half, the upper half or the whole screen for measurement and pro

DAC0832First, the use of software delay method to achieve sawtooth wave, square wave, triangular waves, trapezoidal wave.1.1 Time delay method, 16 times Sawtooth Wave, highest point -5v ;0832 ua-oscilloscope observation delay method ; 0832cs280h~287h ; Ua=-uxef/256*n; ub=-uxef/256*n-5 Data SEGMENT Data ENDS STACK1 SEGMENT PARA STACK dw 20H DUP (0) STACK1 ENDS CODE SEGMENT assume cs:code, Ds:data, Ss:stack1 START: MOV AX, DATA mov DS, AX

Processing Program and determines that the event type is a data sending event based on the bo Bit, it calls the GPIB data sending program and sends the remaining data in the buffer zone to the GPIB bus in sequence. 3. Running status and Result The design of the RS232-1 GUI controller in this article has been successfully used in the connection between the computer and the tds210 oscilloscope. Figure 6 shows the display interface of the Computer Super

Transferred from: http://blog.csdn.net/myarrow/article/details/79301311. IE802.11 Introduction Standard number IEEE 802.11b IEEE 802.11a IEEE 802.11g IEEE 802.11n Standard release Time September 1999 September 1999 June 2003 September 2009 Operating frequency range 2.4-2.4835ghz 5.150-5.350ghz5.475-5.725ghz5.725-5.850ghz 2.4-2.4835ghz 2.4-2.4835ghz5.150-5.850ghz Number of non-overl

) | +----------------+--------------------------------------------------+Configure the Tx_esc clock frequency to a frequency lower than 20MHz isThe maximum allowed frequency forD-phy ESCAPE mode. This isDone by writinginchRegister clkmgr_cfg, Field tx_esc_clk_division. Tx_esc_clk_division divides Byte clock and generates a TX_ESC Clock forThe d-phy. (Note:byte clock isLimited to 125MHz (1ghz/8bits) and by writing tx_esc_clk_division=0x07Tx_esc clock w

turn from: http://blog.csdn.net/myarrow/article/details/7930131 1. IE802.11 Introduction Standard number IEEE 802.11b IEEE 802.11a IEEE 802.11g IEEE 802.11n Standard release Time September 1999 September 1999 June 2003 September 2009 Working frequency range 2.4-2.4835ghz 5.150-5.350ghz 5.475-5.725ghz 5.725-5.850ghz 2.4-2.4835ghz 2.4-2.4835ghz 5.150-5.850ghz Number of non-overlapping channels 3

) relationship, I²c Device selection/topology, interface device/line order definition, LED size/color/drive, heatsink, fan, JTAG, power topology/timing/circuit, etc.For DVT, the requirements are simple and complex: what interface on the board, chip, main device, circuit, it is necessary to test what, especially in the case of the Board normal operation of the power/voltage/ripple/timing, business interface of the eye Diagram/template, the internal data bus signal integrity and timing (such as Mi

)] rounding up =[log2 (6* (6+1 )/2)] [Rounding up =[LOG2 (21)] rounding up =[4.39] rounding up = 5. As a result, 5 bits of the field are fixed to fill 1.- Preamble Indexes Preambleindex –6 bits. This parameter is configured by the ENB side of the RRC, and the terminal launches the non-competitive random access, which needs to be filled in with the preamble index in Prach.- Prach Mask index Prach mask, index –4 bits. This parameter is also configured by the ENB side of the RRC, which determines t

, according to the environmental interference, the addition of the error correction code is more and less, 80211a specified 3 kinds of Correction code added (valid data) encoding rate of 1/2 2/3 3/4.The 802.11A standard stipulates that 6, 12, and Mbps are necessary (required) data rates. 802.11 MAC requires a positive response to each frame. When transmitting a positive response, the data rates that are supported by the connected workstations must be used. Most devices transmit a positive respon

chips. When debugging a driver, in addition to fully understanding the data sheet of the chip, and in the process of software height, we also need to see whether the signal level we expect to occur on the chip. For example, when we write the driver, we need to write the I/O port to operate the peripheral chip, when writing the corresponding I/O port, we know that the corresponding chip signal should be valid, sometimes we need to verify whether the expected occurrence, which requires an

example, the test process of the key module leakage analysis, test adequacy measurement, code static quality analysis and collapse of the white box-level capture and analysis. Suppose you have doubts about the test results. You can use the client's code coverage visualization feature. Direct validation of related results.In addition, all the data of the nebula test can be traversed in the version number. All of the data analysis results specifically consider the aggregation requirements of the

The power ripple index of the DC/DC module is an important parameter. A clean power supply is a prerequisite for the stable operation of the digital circuit and an important guarantee for the parameters of the simulator. To determine the power quality, the Output Ripple of the DC/DC module must be measured. However, the ripple value measured by many people is usually hundreds of music videos or even hundreds of music videos, which is far greater than the maximum ripple value provided by the devi

widening, line current increase, the operating temperature rise, the pipeline will be thermal breakdown. Of course, the same problem can be caused by the breakdown of the row amplitude adjustment tube and the lower damping diode. I found in practice that the 6th situation raises a high probability of a problem, and the 8th is not easy to think about. The operating temperature of the pipe is closely related to its base-pole excitation, and I have observed many kinds of monitors such as Adi, Phi

market is difficult to buy such network cards)72M 802.11n specification, the maximum speed can be achieved under the single Mimo,20mhz bandwidth(at present, a lot of machines with crab card, typical is X220 T420 and some other machines with Realtek BGN 1x1 network card, this type of network card in the 40Mhz bandwidth is not open when the speed, want to speed up, it is recommended to switch on the network card and router on the 40Mhz bandwidth settin

avoidance is needed to complete the simultaneous transmission of n MPDU, thus reducing the channel resource consumption caused by sending N-1 MPDU messages. Through the message aggregation feature, the utilization rate of channel resources is improved, and the performance of 802.11 network is greatly improved. Figure 1 is a structure diagram of A-MPDU, where MPDU delimiter is specifically defined for A-MPDU. In addition, A-MPDU technology only converges the contract for a client's MPDU: Figure

8002 are already displayed on the panel: Click 8002 for the corresponding green font section into the 8002 corresponding interface: 1, after the project URL plus parameter teststars.jsp, access the page for cookie settings:　　2, click Setcookie to set, set the Success page as follows:　Note: In order to differentiate the test, the user name set is consistent with the current login user name of the Nebula client.To view the console printing information, the username setting is successful:　　

,y_10,shadow_90,type_zmfuz3pozw5nagvpdgk=) **5, Project Test * * Access Address: http://localhost:8080/admin/login! [] (http://i2.51cto.com/images/blog/201808/09/7c858c06edb890f0d889934ddb3d2992.png?x-oss-process=image/ watermark,size_16,text_qduxq1rp5y2a5a6i,color_ffffff,t_100,g_se,x_10,y_10,shadow_90,type_zmfuz3pozw5nagvpdgk=) ! [] (http://i2.51cto.com/images/blog/201808/09/901368375ded65e6f19a7500497b75b0.png?x-oss-process=image/ watermark,size_16,text_qduxq1rp5y2a5a6i,color_ffffff,t_100,g_se