A device and method for detecting high-speed differential signals
A high-speed differential and signal technology, applied in the direction of line transmission monitoring/testing, line transmission components, etc., can solve problems such as expensive, difficult operation, and unsuitable for mass production testing, so as to ensure production delivery and improve production efficiency effect
Active Publication Date: 2022-03-18
EVERPRO TECH COMPANY
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Problems solved by technology
[0005] For differential signal quality problems, measurement equipment testing (such as BERT code meter or oscilloscope) and functional equipment testing methods are usually used at present, but these methods are only suitable for research and development in laboratories, and they are expensive, difficult to operate, and Equipment replacement rate and other issues, so it is not suitable for mass production testing
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[0026] The principle and spirit of the present disclosure will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present disclosure, rather than to limit the scope of the present disclosure in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0027] figure 1 is an exemplary schematic diagram illustrating transmission of differential signals by a DP cable. Such as figure 1 As shown in , the display port (DisplayPort, “DP”) cable 100 may include two connectors 101 , and an electronic device (not shown in the figure) is disposed in each connector 101 . Further, the two connectors 101 are connected through a copper wire or an optical cable, so as to realize, for example, data signal (eg, audio s...
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The present disclosure relates to a device and method for detecting high-speed differential signals. The device includes: a signal generator; a signal receiver; a bit error calculation unit for comparing the high-speed differential signal sent by the signal generator with the high-speed differential signal received by the signal receiver to obtain the high-speed differential signal received by the signal receiver Bit error in the differential signal; according to the bit error in the high-speed differential signal received by the signal receiver, it is determined whether the P / N terminals of the high-speed differential signal are open or short-circuited; the eye diagram calculation unit is used to receive Generate a two-dimensional eye diagram of the high-speed differential signal; make statistics on the first bit error rate of the corresponding area in the two-dimensional eye diagram; and determine whether only one of the P / N terminals of the high-speed differential signal is in an open circuit or short circuit state according to the statistical results. With the solution of the present disclosure, the short circuit or open circuit of the high-speed differential signal can be effectively detected, so as to accurately judge the quality problem of the cable.
Description
technical field [0001] The present disclosure generally relates to the field of cable technology. More specifically, the present disclosure relates to a device, a method, a transmission cable device, and a computer-readable storage medium for detecting high-speed differential signals. Background technique [0002] Differential transmission is a signal transmission technology, which is different from the traditional transmission mode of one signal line and one ground line. The aforementioned differential transmission is to transmit signals on the two lines, and the transmitted signals on the two lines are differential signals, and the differential signals have the same amplitude and opposite phases. In the application scenario, the signal receiving end usually compares the difference of the differential signal voltage to judge the logic state sent by the sending end. It can be appreciated that the differential signal can control the "reference" voltage, so that small signal...
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IPC IPC(8): H04B3/46
CPCH04B3/46
Inventor 马燕江辉邱宇为
Owner EVERPRO TECH COMPANY