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Signal testing method and device for airborne 1394B bus

A signal test and bus technology, which is applied in the direction of line transmission monitoring/testing, line transmission components, digital transmission systems, etc., to achieve the effect of improving the efficiency of signal testing

Pending Publication Date: 2020-04-07
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this application is to provide a signal test method and device for an airborne 1394B bus, to solve or alleviate at least one of the problems in the background technology

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  • Signal testing method and device for airborne 1394B bus
  • Signal testing method and device for airborne 1394B bus

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the embodiments of the present application.

[0028] In order to solve the problems pointed out in the background art, this application proposes a method and device that can improve the efficiency of 1394B bus signal testing.

[0029] Such as figure 1 Shown here is an airborne 1394B bus signal testing device according to an embodiment of the application, which includes a plurality of tested airborne 1394B buses 3 (hereinafter or referred to as buses), a switching cable 12 with a predetermined attenuation coefficient, and error codes Rate analysis equipment 1. The bit error rate analysis device 1 is a device that can send and receive test signals through the test port 11. It has 2n test ports (n is a natural number), an...

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Abstract

The invention provides a signal testing method for an airborne 1394B bus. The test comprises the following steps: determining an attenuation coefficient of an adapter cable, with the adapter cable being used for connecting a test port of bit error rate test equipment with the airborne 1394B bus, so that the two test ports of the bit error rate test equipment can form a test channel with the airborne 1394B bus through the adapter cable; enabling the two ends of a plurality of tested airborne 1394B buses to be randomly connected to a plurality of ports of the bit error rate analysis equipment through the switching cables so as to establish a plurality of groups of parallel test channels; and enabling the bit error rate analysis equipment to send a test signal through a plurality of groups ofparallel test ports, and judge whether the bit error rate of the airborne 1394B bus meets the requirement or not according to the test signal. The signal testing efficiency of the 1394B buses can beimproved.

Description

Technical field [0001] This application belongs to the technical field of bus testing, and particularly relates to a signal testing method and device for an airborne 1394B bus. Background technique [0002] The airborne 1394B data bus (1394B bus for short) is a data bus widely used in aerospace equipment. It has the advantages of fast transmission speed and strong anti-interference ability. Under the trend of miniaturization of the whole machine system, its application is especially common. [0003] In the flight management system of high-performance aircraft, the high-speed airborne 1394 bus is used as the transmission means of core data and control signals. Since the signal transmission quality of the 1394B bus will affect the reliability and safety of the aircraft, the 1394B bus signal will be tested in accordance with the relevant technical requirements before the 1394B bus is applied. The test content is usually a bit error rate test. However, it consumes a lot of time to tes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04B3/48
CPCH04L43/0847H04L43/0811H04B3/48
Inventor 许翔鹏张志冰戴磊毕道明
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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