[introduction] in recent years, check and measure equipment industry developing quickly all the time. Become more and more complex as electronic equipment, a lot of companies are facing the test with sophisticated height and process of test and verify. Rapidder data rate increased the time that place of new technology of engineering group test and verify needs, often bring about a product to appear on the market periodic considerably defer. Peaceful overcomes what heard a lot of engineers in project community to complain, because this developed TMT4 abundant to spend test solution, the gender mixes the cooperation that increased a test to use a sex easily.

In recent years, check and measure equipment industry developing quickly all the time. Become more and more complex as electronic equipment, a lot of companies are facing the test with sophisticated height and process of test and verify. Rapidder data rate increased the time that place of new technology of engineering group test and verify needs, often bring about a product to appear on the market periodic considerably defer. Peaceful overcomes what heard a lot of engineers in project community to complain, because this developed TMT4 abundant to spend test solution, the gender mixes the cooperation that increased a test to use a sex easily.

3 problems that high speed circuit faces: Signal integrality PI, electromagnetism disturbs integrality of SI, power source EMI.

? SI is to should assure digital circuit between each chip of signal accurate deliver;

? PI is to ensure the reliable power supply of each part circuit and chip and noise are restrained;

? EMI is to should ensure equipment of other of PCB circuit noninterference, also be not disturbed by other equipment;

? SI problem, because power source is bad to bring about,half above is signal quality problem;

? EMI problem, a main reason is the high frequency noise on PDN especially power source / the high frequency noise between the ground.

SI problem, because power source is bad to bring about,half above is signal quality problem; EMI problem, a main reason is the high frequency noise on PDN especially power source / the high frequency noise between the ground.

PI of abbreviation of power source integrality, it is a technology that veneer power source designs, adopt reasonable power source plane and filter wave design, the parts of an apparatus that goes up for veneer offers stable and clean power source to supply, make sure veneer stabilizes the job. Power source integrality includes design of power source system, dc pressing to fall all working content that noise of analysis of analysis, voltage transient state, synchro switch and parts of an apparatus build a model to wait to be concerned with stability of veneer power source.

Signal integrality SI is to should assure digital circuit between each chip of signal accurate deliver; Power source integrality PI is to ensure the reliable power supply of each part circuit and chip and noise are restrained. When discovering signal integrality is bad, can you be the issue that power source integrality brings? When you discover the bell shakes bigger when, may be power source quality bad? Discover when you the system has when be being piled up by accident, is the operating ring road that can you be power source not stable? Power source integrality (PI) and signal integrality (SI) is mutual influence, signal quality is bad, big probability power source is bad, power source quality is bad, signal quality affirmation is bad.

Power source test should measure ripple noise already, should measure annulus road to answer again, power source restrains the impedance that compares PSRR and network of power source PDN, the power supply that allows you also has poem and distant place.

 

 

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