Method and system for testing surge

Abstract

The embodiment of the invention provides a method and a system for testing surge, and the method comprises the following steps: receiving a surge signal sent by a surge signal generator through a coupling network by a second fixture via a first port thereof, wherein the first port is connected with the output port of the coupling network through a first connection wire; transmitting the surge signal to a port of a first fixture by the second fixture through a second port thereof, and transmitting the surge signal to a port to be tested of a device to be tested by a third port of the second fixture to test the surge tolerance of the port to be tested; connecting the second port with the port of the first fixture via a second connecting wire, and connecting the third port with the port to be tested via a third connecting wire; and connecting each two of the first port, the second port and the third port. The embodiment of the invention realizes the aim of testing surge tolerance on a port without a protection circuit on the premise that one port has a protection circuit while the other connected port has no protection circuit.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a surge test method and system. Background technique [0002] According to the characteristics of layered connection of network products, a switch is often divided into downlink ports and uplink ports. For example, for a switch working on layer 2, its downlink port is connected to a personal computer (Personal Computer; PC for short), and its uplink port is connected to any downlink port of the layer 3 switch. The connection between layer 2 equipment and layer 3 equipment is often exposed outdoors or in a very harsh external environment, which is very easy to introduce surges. In order to improve the reliability of these ports, it is common practice to add additional protection circuits to the uplink ports. Layer 2 devices will improve the protection performance of their own ports after adding protection circuits, while unprotected downlink ports of Layer 3 devices are A...

AI Technical Summary

Problems solved by technology

The connection between layer 2 equipment and layer 3 equipment is often exposed outdoors or in a very harsh external environment, which is very easy to introduce surges

In order to improve the reliability of these ports, it is common practice to add additional protection circuits to the uplink ports. Layer 2 devices will improve the protection performance of their own ports after adding protection circuits, while unprotected downlink ports of Layer 3 devices are After the layer 2 equipment is connected, it will be more easily damaged due to the influence of the protection circuit of the layer 2 equipment; voltage, which in turn creates an overcurrent

For a layer 2 device with a protection circuit, the overcurrent will not threaten the uplink port of the layer 2 device, but for a layer 3 device without a protection circuit, the overcurrent will cause damage to the downlink port of the layer 3 device Great impact, easy to damage the downlink port

[0003] However, the prior art does not provide an effective method to evaluate the impact on the other port after one of the adjacent ports introduces a surge

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