CN104316784A - Parallel testing apparatus based on photoelectric mixed signals - Google Patents

Parallel testing apparatus based on photoelectric mixed signals Download PDF

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Publication number
CN104316784A
CN104316784A CN201410522653.6A CN201410522653A CN104316784A CN 104316784 A CN104316784 A CN 104316784A CN 201410522653 A CN201410522653 A CN 201410522653A CN 104316784 A CN104316784 A CN 104316784A
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CN
China
Prior art keywords
output
switch
parallel
change
1x2
Prior art date
Application number
CN201410522653.6A
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Chinese (zh)
Inventor
苗澎
李勇卓
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东南大学
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Application filed by 东南大学 filed Critical 东南大学
Priority to CN201410522653.6A priority Critical patent/CN104316784A/en
Publication of CN104316784A publication Critical patent/CN104316784A/en

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Abstract

The invention provides a parallel testing apparatus based on photoelectric mixed signals. In the parallel testing apparatus, the input end of a preemphasis circuit (102) is connected with an instrument input port (101), the output end of the preemphasis circuit (102) is connected with the input end of a parallel copy and diverter switch (103), the parallel copy and diverter switch (103) has multipath output, each output is correspondingly connected with each 1X2 switch of a matrix 1X2 switch (109), each 1X2 switch of the matrix 1X2 switch (109) is respectively correspondingly connected with each electrical-to-optical conversion module (108), and the output of the electrical-to-optical conversion modules (108) are respectively correspondingly from first path output to N-th path output. According to the invention, through operation of an operator on a host computer, which high-speed channel an instrument is output to can be tested through automatic switching, multichannel simultaneous output can also be realized, and the preemphasis circuit ensures the signal completeness of each channel. At the same time, the photoelectric mixed signals are output, the test costs is greatly decreased, and a low-cost testing scheme is provided.

Description

A kind of based on photoelectricity mixed signal parallel testing device

Technical field

The present invention is a kind of proving installation based on photoelectricity mixed signal, belongs to high speed transmission of signals and technical field of measurement and test.

Background technology

Along with widely using of high-speed serial bus, the development for high speed serialization equipment also requires more and more urgent increasingly.Usual use specialty high speed serialization equipment, the test pattern needed for generation, assesses for serial device performance.Because the type equipment price is very expensive, and most instrument does not have optical interface, is inconvenient to test and uses.If want multi-channel high-speed signal parallel to test simultaneously, measuring unit cannot buy a large amount of same instruments simultaneously, and its parameter adjustment is complicated, is not suitable for plant maintenance personnel and adjusts.Therefore, be necessary to propose a kind of scheme to meet the demand of the quick easy configuration parameter of user, carry out the photoelectricity hybrid interface parallel high-speed signal testing of low cost.

Summary of the invention

Technical matters: the invention provides a kind of based on photoelectricity mixed signal parallel testing device, this parallel testing device comprises instrument input port, preemphasis circuit, walks abreast and copy and change-over switch, multiple-channel output, power module, control module, host computer, electrooptic conversion module, matrix 1X2 switch; Wherein, the input termination instrument input port of preemphasis circuit, the output termination of preemphasis circuit walks abreast and copies the input end with change-over switch, parallel copying has multiple-channel output with change-over switch, it respectively exports the corresponding each 1X2 switch connecing matrix 1X2 switch, each 1X2 switch corresponding each modular converter connecing electrooptic conversion module respectively of matrix 1X2 switch, the output of each modular converter of electrooptic conversion module corresponds to the 1st tunnel respectively and exports the output of N road to.

Described instrument input port, with adaptive equalizer, effectively can improve signal quality, improves signal integrity.

The described parallel high speed data buffer, the speed-sensitive switch that comprise multiple cascade with change-over switch of copying is formed, and is copied on multiple output port by the high-speed data-flow of input port.

Described parallel copying is operated in all standing in any high speed with change-over switch, and described instrument performance index is completely the same.

Control module comprises microprocessor and peripheral circuit, and described peripheral circuit comprises random access storage device, ROM (read-only memory), Ethernet interface and corresponding ethernet controller chip.

Said method comprising the steps of:

Step 1: the corresponding port signal message that control module is configured with computing machine and host computer by USB interface reading user;

Step 2: the respective memory locations according to USB interface judges, and switch user's dedicated tunnel by parallel copying with change-over switch, switch and output signal arbitrarily;

Step 3: the respective memory locations according to USB interface judges, and switch user's dedicated tunnel by parallel copying with change-over switch, copy any output signal;

Step 4, control module waits for N second, N be greater than 1 integer, reenter step 1.

Described signal replication is formed to the high speed data buffer of multiple cascade, is copied on multiple output port by the data turn of tidal stream of input port.In order to reduce transmission delay.All circuit workings are in speed grade identical with signal source.

Beneficial effect: the invention provides a kind of based on photoelectricity mixed signal parallel testing device, by the operation of operating personnel at host computer, which high-speed channel automatic switchover testing tool outputs to, and also can export by hyperchannel simultaneously, and preemphasis circuit ensures its each channel signal integrality.Output photoelectric mixed signal simultaneously, the present invention has saved testing cost greatly, provides a kind of low cost test scheme.

Accompanying drawing explanation

Fig. 1 is structured flowchart of the present invention.

Wherein have: instrument input port 101, preemphasis circuit 102, parallel to copy and change-over switch 103, multiple-channel output 104, power module 105, control module 106, host computer 107, electrooptic conversion module 108, matrix switch 1X2 109.

Embodiment

Fig. 1 shows structure of the present invention.This parallel testing device comprises instrument input port 101, preemphasis circuit 102, walks abreast and copy and change-over switch 103, multiple-channel output 104, power module 105, control module 106, host computer 107, electrooptic conversion module 108, matrix 1X2 switch 109; Wherein, the input termination instrument input port 101 of preemphasis circuit 102, the output termination of preemphasis circuit 102 walks abreast and copies the input end with change-over switch 103, parallel copying has multiple-channel output with change-over switch 103, it respectively exports the corresponding each 1X2 switch connecing matrix 1X2 switch 109, each 1X2 switch corresponding each modular converter connecing electrooptic conversion module 108 respectively of matrix 1X2 switch 109, the output of each modular converter of electrooptic conversion module 108 corresponds to the 1st tunnel respectively and exports the output of N road to.

Instrument input port 101 is SMA interface, carries out electric mouth be easily connected with special test equipment.

Preemphasis circuit 102 can compensate due to the loss of signal on pcb board, improves signal integrity, realizes better data stream and exports.

Signal replication circuit 103 is made up of the high speed data buffer of multiple cascade, by the 10G data flow replication of input port on multiple output port.In order to reduce transmission delay.All circuit workings are in speed grade identical with signal source.

Output circuit 104 is made up of the driver of multiple light module, is conveniently connected on optical interface lead-out terminal, for driving the single mode or multimode optical fiber that meet high speed test standard.

AC (the 110v or 220v) circuit that power module 105 comprises input is transformed into the direct supply of low pressure, such as 12v.The low-voltage power supplies such as 3.3v or 2.5v that high-speed chip powers are transformed into again by a series of power management chip.

Host computer 107 provides friendly GUI man-machine interface, and user can input required channel information easily, realizes controlling functions.

Electrooptic conversion module 108 realizes photoelectric converting function, and provides appropriate light interface output optical signal.

Matrix switch 1X2 109 carries out signal switching on electric mouth: electrooptic conversion module 108 is exported to for output optical signal in a road; Electric signal is exported on another road.

By above circuit design, simplify the use of system, operating personnel only need to input simple instruction on host computer, and do not need artificially to set various parameter, achieve the test of high-speed parallel optical interface signal easily.

Claims (6)

1. based on a photoelectricity mixed signal parallel testing device, it is characterized in that: this parallel testing device comprises instrument input port (101), preemphasis circuit (102), walks abreast and copy and change-over switch (103), multiple-channel output (104), power module (105), control module (106), host computer (107), electrooptic conversion module (108), matrix 1X2 switch (109), wherein, input termination instrument input port (101) of preemphasis circuit (102), the output termination of preemphasis circuit (102) is parallel copies the input end with change-over switch (103), parallel copying has multiple-channel output with change-over switch (103), it respectively exports each 1X2 switch that correspondence connects matrix 1X2 switch (109), each 1X2 switch of matrix 1X2 switch (109) respectively correspondence connects each modular converter of electrooptic conversion module (108), the output of each modular converter of electrooptic conversion module (108) corresponds to the 1st tunnel respectively and exports the output of N road to.
2. one according to claim 1 is based on photoelectricity mixed signal parallel testing device, it is characterized in that: described instrument input port (101), with adaptive equalizer, effectively can improve signal quality, improves signal integrity.
3. one according to claim 1 is based on photoelectricity mixed signal parallel testing device, it is characterized in that: the described parallel high speed data buffer, the speed-sensitive switch that comprise multiple cascade with change-over switch (103) of copying is formed, and is copied on multiple output port by the high-speed data-flow of input port.
4. one according to claim 1 is based on photoelectricity mixed signal parallel testing device, it is characterized in that: described parallel copying is operated in all standing in any high speed with change-over switch (103), and described instrument performance index is completely the same.
5. one according to claim 1 is based on photoelectricity mixed signal parallel testing device, it is characterized in that: control module (106) comprises microprocessor and peripheral circuit, described peripheral circuit comprises random access storage device, ROM (read-only memory), Ethernet interface and corresponding ethernet controller chip.
6. an a kind of parallel test method based on photoelectricity mixed signal parallel testing device as claimed in claim 1, is characterized in that: said method comprising the steps of:
Step 1: the corresponding port signal message that control module (106) is configured with computing machine and host computer (107) by USB interface reading user;
Step 2: the respective memory locations according to USB interface judges, and switch user's dedicated tunnel by parallel copying with change-over switch (103), switch and output signal arbitrarily;
Step 3: the respective memory locations according to USB interface judges, and switch user's dedicated tunnel by parallel copying with change-over switch (103), copy any output signal;
Step 4, control module (106) waits for N second, N be greater than 1 integer, reenter step 1.
CN201410522653.6A 2014-09-30 2014-09-30 Parallel testing apparatus based on photoelectric mixed signals CN104316784A (en)

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CN201410522653.6A CN104316784A (en) 2014-09-30 2014-09-30 Parallel testing apparatus based on photoelectric mixed signals

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CN201410522653.6A CN104316784A (en) 2014-09-30 2014-09-30 Parallel testing apparatus based on photoelectric mixed signals

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104734917A (en) * 2015-03-17 2015-06-24 上海创远仪器技术股份有限公司 Matrix switch equipment capable of being configured at will on basis of USBTMC protocol

Citations (6)

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Publication number Priority date Publication date Assignee Title
US20070063739A1 (en) * 2005-08-12 2007-03-22 Samsung Electronics Co., Ltd. Pre-emphasis apparatus, low voltage differential signaling transmitter including the same and pre-emphasis method
CN101610202A (en) * 2008-06-16 2009-12-23 华为技术有限公司 The switching method of asynchronous data and device
CN102684945A (en) * 2012-05-10 2012-09-19 南京英飞诺网络科技有限公司 Test access port (TAP) equipment
CN102769550A (en) * 2012-05-10 2012-11-07 南京英飞诺网络科技有限公司 Test access point device and method for adjusting operating modes of test access point device
CN103606367A (en) * 2013-11-22 2014-02-26 广东威创视讯科技股份有限公司 Signal cascade transmission method and signal cascade device
CN204256063U (en) * 2014-09-30 2015-04-08 东南大学 A kind of based on photoelectricity mixed signal parallel testing device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070063739A1 (en) * 2005-08-12 2007-03-22 Samsung Electronics Co., Ltd. Pre-emphasis apparatus, low voltage differential signaling transmitter including the same and pre-emphasis method
CN101610202A (en) * 2008-06-16 2009-12-23 华为技术有限公司 The switching method of asynchronous data and device
CN102684945A (en) * 2012-05-10 2012-09-19 南京英飞诺网络科技有限公司 Test access port (TAP) equipment
CN102769550A (en) * 2012-05-10 2012-11-07 南京英飞诺网络科技有限公司 Test access point device and method for adjusting operating modes of test access point device
CN103606367A (en) * 2013-11-22 2014-02-26 广东威创视讯科技股份有限公司 Signal cascade transmission method and signal cascade device
CN204256063U (en) * 2014-09-30 2015-04-08 东南大学 A kind of based on photoelectricity mixed signal parallel testing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104734917A (en) * 2015-03-17 2015-06-24 上海创远仪器技术股份有限公司 Matrix switch equipment capable of being configured at will on basis of USBTMC protocol

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