CN202998250U

CN202998250U - ADSL signal test tool

Info

Publication number: CN202998250U
Application number: CN 201220678759
Authority: CN
Inventors: 陈青松
Original assignee: Shanghai Feixun Data Communication Technology Co Ltd
Current assignee: Shanghai Feixun Data Communication Technology Co Ltd
Priority date: 2012-12-10
Filing date: 2012-12-10
Publication date: 2013-06-12
Anticipated expiration: 2022-12-10

Abstract

The utility model discloses an ADSL signal test tool. The ADSL signal test tool comprises at least one test unit, wherein each test unit comprises an input interface, an output interface, at least two attenuation modules used for simulating circuit attenuation and at least three switches, one of the at least three switches is connected in series with the at least two attenuation modules between the input interface and the output interface, and other switches of the at least three switches are respectively connected in parallel with the at least two attenuation modules one-to-one. According to a technical scheme, by utilizing the ADSL signal test tool, signal attenuation tests of multiple special distances can be realized by only switching on or off different switches according to different test distances, and arrangement of multiple test work stations is not needed, switching of the multiple test work stations is further not needed, power-on time of equipment to be tested during work station switching is saved, so test time is greatly reduced.

Description

A kind of ADSL signal testing instrument

Technical field

The utility model relates to the signal testing field, relates in particular to a kind of ADSL signal testing instrument.

Background technology

At present, in the production of ADSL user terminal is completed, require the connection speed of a plurality of specific ranges of test, usually use line simulation device simulation different distance, then according to measuring distance, Devices to test is set up different test station.Because there is the connection speed of a plurality of specific ranges to need test, therefore need a plurality of test station, the line simulation device that needs is many, and test environment sets up loaded down with trivial details; And different test station switch the available machine time that will expend equipment under test, so the testing time is long.

The utility model content

The technical problems to be solved in the utility model is, the defective that above-mentioned test station is many, the testing time is long for prior art provides the ADSL signal testing that a kind of test station is few, the testing time is short instrument.

the technical scheme that its technical problem that solves the utility model adopts is: construct a kind of ADSL signal testing instrument, described ADSL signal testing instrument comprises at least one test cell, each test cell comprises: input interface, output interface, at least two attenuation module and at least three switches that are used for the analog line decay, and, one of them switch in described at least three switches and at least two attenuation module are connected between described input interface and output interface, other switch in described at least three switches is in parallel one by one with at least two attenuation module respectively.

In ADSL signal testing instrument described in the utility model, described at least one test cell is arranged on test board, and described attenuation module is pluggable attenuation module.

In ADSL signal testing instrument described in the utility model, described switch is double-pole single throw.

In ADSL signal testing instrument described in the utility model, the quantity of described attenuation module is three; The quantity of described switch is four.

In ADSL signal testing instrument described in the utility model, described attenuation module is series-parallel rlc circuit.

Implement the technical solution of the utility model, by this ADSL signal testing instrument, only need according to different measuring distances, select the break-make of different switches just can realize the test of the signal attenuation of a plurality of specific ranges, and do not need to arrange a plurality of test station, also need to not switch in a plurality of test station, simultaneously, also saved the available machine time of equipment under test when the switch test station, the testing time is greatly reduced.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in accompanying drawing:

Fig. 1 is the logic diagram of test cell embodiment one in the utility model ADSL signal testing instrument;

Fig. 2 is the logic diagram of test cell embodiment two in the utility model ADSL signal testing instrument.

Embodiment

Fig. 1 is the logic diagram of test cell embodiment one in the utility model ADSL signal testing instrument, and at first explanation is, ADSL signal testing instrument comprises at least one test cell, and each test cell all can be tested an equipment under test.A test cell only is shown in Fig. 1, and this test cell comprises: input interface 10, output interface 20, attenuation module 1, attenuation module 2 42, switch 1, switch 2 32 and switch 3 33, each attenuation module all decays for analog line, different attenuation module can be simulated the Line Attenuation of same distance, also can simulate the Line Attenuation of different distance.And switch 3 33 is the test control switch, and is closed when test, disconnects when not testing.In this embodiment, switch 3 33 and attenuation module 1, attenuation module 2 42 are connected between input interface 10 and output interface 20, and switch 1 is in parallel with attenuation module 1, and switch 2 32 is in parallel with attenuation module 2 42.Should be noted that this is a specific embodiment of the present utility model, the quantity of attenuation module does not limit two, the quantity of switch does not limit three yet, in other embodiments, the quantity of attenuation module can be greater than two, and the quantity of switch can be greater than three.

When using this testing tool that the connection speed under the multiple distance of equipment under test is tested, at first equipment under test is connected with input interface 10, then, if need the ADSL signal attenuation of test 0kFt, only need to switch 1, switch 2 32, switch 3 33 is closed simultaneously, and the output signal of output interface 20 is tested; If the signal attenuation of the circuit that attenuation module of needs survey is simulated, only need to be with switch one 31(or switch 2 32) and switch 3 33 carry out closure, switch two 32(or switch 1) disconnect, like this, only attenuation module two 42(or attenuation module 1) between access input interface 10 and output interface 20, then can test the output signal of output interface 20; If the signal attenuation of the circuit that two attenuation module of needs survey are simulated, only switch 3 33 need to be carried out closure, switch 1, switch 2 32 disconnect, like this, attenuation module 1, attenuation module 2 42 all access between input interface 10 and output interface 20, then can test the output signal of output interface 20.Therefore, by such testing tool, only need according to different measuring distances, select the break-make of different switches just can realize the test of the signal attenuation of a plurality of specific ranges, and do not need to arrange a plurality of test station, also need to not switch in a plurality of test station, simultaneously, also saved the available machine time of equipment under test when the switch test station, the testing time is greatly reduced.

Fig. 2 is the logic diagram of test cell embodiment two in the utility model ADSL signal testing instrument, this test cell comprises input interface 10, output interface 20, attenuation module 1, attenuation module 2 42, the switch 1 of attenuation module 3 43 and double-pole single-throw (D.P.S.T.), switch 2 32, switch 3 33 and switch 4 34, wherein, switch 4 34 and attenuation module 1, attenuation module 2 42, attenuation module 3 43 is connected between input interface 10 and output interface 20, switch 1 is in parallel with attenuation module 1, switch 2 32 is in parallel with attenuation module 2 42, switch 3 33 is in parallel with attenuation module 3 43.When using this testing tool that the connection speed of the multiple distance of equipment under test is tested, at first equipment under test is connected with input interface 10, then, if need the ADSL signal attenuation of test 0kFt, only need to switch 1, switch 2 32, switch 3 33, switch 4 34 is closed simultaneously, and the output signal of output interface 20 is tested; If the signal attenuation of the circuit that attenuation module of needs survey is simulated only need to be carried out closure (perhaps with switch 1, switch 2 32, switch 4 34 with switch 1, switch 3 33, switch 3 34; Perhaps with switch 2 32, switch 3 33, switch 4 34), remaining switch disconnects, and like this, only an attenuation module accesses between input interface 10 and output interface 20, then can test the output signal of output interface 20; If the signal attenuation of the circuit that two attenuation module of needs survey are simulated, only need to be with switch one 31(or switch 2 32, or switch 3 33), switch 4 34 carries out closure, remaining switch disconnects, like this, just have between two attenuation module access input interfaces 10 and output interface 20, then can test the output signal of output interface 20; If the signal attenuation of the circuit that three attenuation module of needs test are simulated, only switch 4 34 need to be carried out closure, remaining switch disconnects, like this, just have between three attenuation module access input interfaces 10 and output interface 20, then can test the output signal of output interface 20.

In a preferred embodiment of the present utility model, above-mentioned test cell can be arranged on test board, and attenuation module is pluggable, can change according to actual needs different attenuation module like this, with realize multiple spurs more from the deamplification test.

In another preferred embodiment of the present utility model, attenuation module is series-parallel rlc circuit.

In addition, should be noted that also switch does not limit type, can be single-pole single-throw switch (SPST), also can be double-pole single throw or double-point double-throw switch, certainly, preferred double-pole single throw.

The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present utility model.

Claims

1. ADSL signal testing instrument, it is characterized in that, described ADSL signal testing instrument comprises at least one test cell, each test cell comprises: input interface, output interface, at least two attenuation module and at least three switches that are used for the analog line decay, and, one of them switch in described at least three switches and at least two attenuation module are connected between described input interface and output interface, and other switch in described at least three switches is in parallel one by one with at least two attenuation module respectively.

2. ADSL signal testing instrument according to claim 1, is characterized in that, described at least one test cell is arranged on test board, and described attenuation module is pluggable attenuation module.

3. ADSL signal testing instrument according to claim 1, is characterized in that, described switch is double-pole single throw.

4. ADSL signal testing instrument according to claim 1, is characterized in that, the quantity of described attenuation module is three; The quantity of described switch is four.

5. ADSL signal testing instrument according to claim 1, is characterized in that, described attenuation module is series-parallel rlc circuit.