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A group interface conversion device

A technology of interface conversion and group circuit, applied in the field of group circuit interface conversion device, can solve the problem of no interface conversion device, etc., and achieve the effect of self-adaptive conversion

Active Publication Date: 2021-04-02
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no such interface conversion device in the prior art

Method used

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  • A group interface conversion device
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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] refer to figure 1 , a group interface conversion device, which includes an A interface board 1, an RS422 interface board 2, an E2 interface board 3, and a power supply module 5, and also includes a multiple distribution board 4. figure 1 It is an electric principle block diagram of the present invention, and the embodiment is according to figure 1 Connect the lines.

[0026] Wherein, the A interface board 1 completes the mutual conversion between the signal level of the A interface and the TTL level. The input port 1-1 and the output port 1-2 of the A interface board 1 are respectively connected to the external A interface receiving port A1 and the A interface sending port A2. A interface board 1 can be made by comparator AX978ESE produced by MAXIM Company of the United States.

[0027] The RS422 interface board 2 completes the mutua...

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Abstract

The invention discloses a group path interface conversion device, and belongs to the technical field of digital communication. The device comprises an A interface board, an RS422 interface board, an E2 interface board, a multiplexing and demultiplexing board and a power supply module, according to the device, an FPGA in a multiplexing board serves as a core control device, an interface A, an RS422interface and an interface E2 are controlled through the FPGA, and data conversion output between the RS422 interface and the interface A or between the RS422 interface and the interface E2 is achieved. The device can be used for connecting group interfaces between different communication devices, has the advantages of being good in practicability, high in reliability, convenient to maintain andthe like, and is suitable for self-adaptive mutual conversion between an RS422 interface and an A interface or an E2 interface.

Description

technical field [0001] The invention belongs to the technical field of digital communication, in particular to a group interface conversion device, which can be used for self-adaptive mutual conversion between an RS422 interface and an A interface or an E2 interface. Background technique [0002] The A interface is a digital interface widely used on the trunk side. It has the disadvantages of low interface level and easy interference. E2 is the second level of standardized digital multiplexing of the Pseudo-Synchronous Digital Hierarchy (PDH). As the electrical interface rate uniformly stipulated by ITU-T, the E2 interface can perform high-speed data transmission at a rate of 8.448Mbps, but the disadvantage is that the rate is single. The RS422 interface is a serial port physical interface standard formulated and released by the American Electronics Industries Association (EIA). It adopts differential mode transmission and has a long transmission distance. The disadvantage i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40H04Q1/02
CPCH04B1/40H04Q1/028
Inventor 朱宏光张华磊刘阳王群欢邵建伟
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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