CN202614901U

CN202614901U - Automatic measurement system for amplitude-frequency characteristics of communication interface circuit module

Info

Publication number: CN202614901U
Application number: CN 201220230154
Authority: CN
Inventors: 白华; 田振国
Original assignee: HUBEI DONGGUANG ELECTRONICS CO Ltd
Current assignee: HUBEI DONGGUANG ELECTRONICS CO Ltd
Priority date: 2012-05-22
Filing date: 2012-05-22
Publication date: 2012-12-19
Anticipated expiration: 2022-05-22

Abstract

Disclosed is an automatic measurement system for amplitude-frequency characteristics of a communication interface circuit module, comprising a main control computer (A), a programmable signal source (B), a programmable instrument (C) and a measuring device (a product to be measured) (D); wherein the main control computer (A) is separately and electrically connected with the measuring device (D), the programmable signal source (B) and the programmable instrument (C) to achieve two-way communication; the programmable signal source (B) is electrically connected with the measuring device (D) to provide corresponding signals for the measuring device (D); and the programmable instrument (C) is electrically connected with the measuring device (D) to carry out sampling measurement on output signals of the measuring device (D). The automatic measurement system has the advantages that the automatic measurement system can be adopted to greatly improve the efficiency of product testing and improve the production capacity.

Description

Communication interface circuit module amplitude versus frequency characte automatic measurement system

Technical field

The utility model relates to the automatic measurement of communication interface circuit module amplitude versus frequency characte.

Background technology

The amplitude versus frequency characte of communication interface circuit is one of important indicator of weighing the interface circuit performance; Traditional metering system adopts manual operations mostly; Utilize the gain of measurement module respectively under different frequencies and signal level of Speech Path Test appearance, its efficient is very low, is unfavorable for producing in enormous quantities test.

The utility model content

The purpose of the utility model is exactly to adopt manual operations mostly to traditional metering system; Utilize the gain of measurement module respectively under different frequencies and signal level of Speech Path Test appearance; Its efficient is very low, is unfavorable for producing the present situation of test in enormous quantities and manufactures and designs a kind of communication interface circuit module amplitude versus frequency characte automatic measurement system.

The utility model is by master control computer (A), programmed signal source (B), and program-controlled instrument (C) and measurement mechanism (D) constitute; Master control computer (A) as host computer respectively with measurement mechanism (D), programmed signal source (B), program-controlled instrument (C) is electrically connected, and realizes two-way communication, and it is controlled.Programmed signal source (B) is electrically connected with measurement mechanism (D), and (D) provides corresponding signal for measurement mechanism, and program-controlled instrument (C) is electrically connected with measurement mechanism (D), and the output signal of measurement mechanism (D) is measured.

Measurement mechanism (D) is made up of interface and signal processing module (E), signal distribution module (F), level processing module (G), matching network 1 (H), electronic switch (I), signal detection module (J), signal processing module (K), matching network 2 (L), conversion of signals gating module (N) and supply module (P); Interface and signal processing module (E) are electrically connected with signal distribution module (F), electronic switch (I), conversion of signals gating module (N) respectively; Signal detection module (J) output terminal is electrically connected with interface and signal processing module (E); The output terminal of signal distribution module (F) is electrically connected with level processing module (G) and matching network 1 (H) respectively; Electronic switch (I) is electrically connected with matching network 1 (H), matching network 2 (L); The output terminal of signal processing module (K) and matching network 2 (L) is electrically connected with the input end of conversion of signals gating module (N); Supply module (P) is electrically connected with interface and signal processing module (E), signal distribution module (F), level processing module (G), electronic switch (I), signal processing module (K), conversion of signals gating module (N) respectively.

The utility model has the advantages that: add product; Measuring system can be measured by the condition that preestablishes automatically, and can revise according to the actual requirements, adds various parameters, and measurement finishes; Complete measurement result can be exported, and the amplitude-versus-frequency curve of product can be drawn out.

Description of drawings

Accompanying drawing 1 is the utility model circuit diagram.

Accompanying drawing 2 is the utility model measurement mechanism (D) circuit diagram.

Embodiment

The utility model is characterized in that it by master control computer (A) by communication interface circuit module amplitude versus frequency characte automatic measurement system, programmed signal source (B), and program-controlled instrument (C) and measurement mechanism (D) constitute; Master control computer (A) as host computer respectively with measurement mechanism (D), programmed signal source (B), program-controlled instrument (C) is electrically connected, and realizes two-way communication, and it is advanced control.Programmed signal source (B) is electrically connected with measurement mechanism (D), and (D) provides corresponding signal for measurement mechanism, and program-controlled instrument (C) is electrically connected with measurement mechanism (D), and the output signal of measurement mechanism (D) is measured.

Measurement mechanism (D) is made up of interface and signal processing module (E), signal distribution module (F), level processing module (G), matching network 1 (H), electronic switch (I), signal detection module (J), signal processing module (K), matching network 2 (L), conversion of signals gating module (N) and supply module (P); Interface and signal processing module (E) are electrically connected with signal distribution module (F), electronic switch (I), conversion of signals gating module (N) respectively; Signal detection module (J) input is electrically connected with product to be measured (M), and signal detection module (J) output terminal is electrically connected with interface and signal processing module (E); The output terminal of signal distribution module (F) is electrically connected with level processing module (G) and matching network 1 (H) respectively; Level processing module (G) output terminal is electrically connected with the VR end of product to be measured (M); Electronic switch (I) is electrically connected with T, R end and matching network 1 (H), the matching network 2 (L) of product to be measured (M) respectively; The VX end of product to be measured (M) is electrically connected with signal processing module (K); The output terminal of signal processing module (K) and matching network 2 (L) is electrically connected with the input end of conversion of signals gating module (N); Supply module (P) is electrically connected with interface and signal processing module (E), signal distribution module (F), level processing module (G), electronic switch (I), product to be measured (M), signal processing module (K), conversion of signals gating module (N) respectively, for it provides power supply.

Principle of work: general interface module amplitude versus frequency characte is meant 1. at fixed frequency (like 840Hz); The varying input signal level (like-40dbm---the variation of+module gain 8dbm) time; 2. at fixing incoming signal level (like-20 dbm), and different incoming frequencies (as 300---the variation of module gain in the time of 3400HZ).If the employing conventional test methods is wanted time of labor, be unfavorable for large batch of production.The principle of work of this measuring system is: on master control computer (A), weave the application corresponding control program at first as requested, and set parameters, start application program; When on measurement mechanism (D), packing product to be measured into, system has detected product packs into, measures automatically when promptly opening; Programmed signal source (B) produces various signals as requested under the control of master control computer (A); Product to be measured (D) receives these signals respectively under the control of master control computer, program-controlled instrument (C) is also being measured the gain of product to be measured under the unlike signal condition on the measurement mechanism (D) under the control of master control computer (A) simultaneously.Measurement finishes, and on master control computer (A), demonstrates the measurement data of each point, and draws out the measurement curve, i.e. amplitude-versus-frequency curve, and compare with typical curve and data, whether qualified to judge measured product.

Claims

1. communication interface circuit module amplitude versus frequency characte automatic measurement system is characterized in that it by master control computer (A), programmed signal source (B), and program-controlled instrument (C) and measurement mechanism (D) constitute; Master control computer (A) as host computer respectively with measurement mechanism (D), programmed signal source (B), program-controlled instrument (C) is electrically connected; Realize two-way communication; And it is controlled, programmed signal source (B) is electrically connected with measurement mechanism (D), and (D) provides corresponding signal for measurement mechanism; Program-controlled instrument (C) is electrically connected with measurement mechanism (D), and the output signal of measurement mechanism (D) is measured; Measurement mechanism (D) is made up of interface and signal processing module (E), signal distribution module (F), level processing module (G), matching network 1 (H), electronic switch (I), signal detection module (J), signal processing module (K), matching network 2 (L), conversion of signals gating module (N) and supply module (P); Interface and signal processing module (E) are electrically connected with signal distribution module (F), electronic switch (I), conversion of signals gating module (N) respectively; Signal detection module (J) output terminal is electrically connected with interface and signal processing module (E); The output terminal of signal distribution module (F) is electrically connected with level processing module (G) and matching network 1 (H) respectively; Electronic switch (I) is electrically connected with matching network 1 (H), matching network 2 (L); The output terminal of signal processing module (K) and matching network 2 (L) is electrically connected with the input end of conversion of signals gating module (N), and supply module (P) is electrically connected with interface and signal processing module (E), signal distribution module (F), level processing module (G), electronic switch (I), signal processing module (K), conversion of signals gating module (N) respectively.