Rectification method for radiated emission location of multi-subscriber units in passive optical network

Abstract

The present invention relates to the field of electronic communications, and specifically relates to a radiated emission positioning rectification method for a multi-user unit of a passive optical network. The method comprises the following steps: diagnosing an interference source and an interference propagation path; performing safe grounding and bonding on EMC in advance; removing an unnecessary frequency component from a frequency domain by means of filtering, thereby reducing electromagnetic disturbance in two aspects, i.e. conduction and radiation; suppressing, by means of shielding, various types of electromagnetic interference propagated in space; replacing a suspicious element with an element meeting an EMC requirement; and with regard to a crystal oscillator product, reducing output energy of a crystal oscillator and a harmonic wave thereof by means of a method of connecting resistors in series or in parallel. In the present invention, starting from the root, radiation energy is reduced from a source, a path of radiated interference is destroyed or changed, a gap is reduced, filtering is enhanced, and a radiation mechanism is destroyed by changing the position of a line, such that radiated emission positioning rectification of a multi-user unit of a passive optical network can be rapidly and accurately performed.

Description

technical field [0001] The invention relates to the field of electronic communication, in particular to a rectification method for radiation emission positioning of multi-subscriber units in a passive optical network. Background technique [0002] With the development of communication, passive optical network (PON) products are more and more widely used, and MDU (multi-user terminal unit) is one of the more complicated ones. Meeting the requirements of electromagnetic compatibility (EMC) is a must for products to go global prerequisites. The unqualified radiation emission of MDU has become an important factor and difficult problem that plagues hardware developers and delays project development progress. [0003] EMC rectification refers to the compensation method adopted after the product has problems in the EMC test process. The purpose of the EMC rectification work is to reduce the interference generated by the EUT (equipment under test) itself, which meets the requireme...

AI Technical Summary

Problems solved by technology

The unqualified radiation emission of MDU has become an important factor and difficult problem that plagues hardware developers and delays project development progress.

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