CN201185424Y - Error code detector - Google Patents
Error code detector Download PDFInfo
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- CN201185424Y CN201185424Y CNU2008200213760U CN200820021376U CN201185424Y CN 201185424 Y CN201185424 Y CN 201185424Y CN U2008200213760 U CNU2008200213760 U CN U2008200213760U CN 200820021376 U CN200820021376 U CN 200820021376U CN 201185424 Y CN201185424 Y CN 201185424Y
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Abstract
The utility model discloses an error code detector, which is used for detecting the bit error rate of an equipment unit. The error code detector comprises an error code generating and detecting unit and a main control unit. The error code generating and detecting unit generates test code typed data and the data is transmitted to the equipment unit to be detected. The feedback code typed data output from the equipment unit is transmitted to the error code generating and detecting unit. The error code generating and detecting unit detects the error code based on the test code typed data and the feedback code typed data. The error code detecting of the high speed signal can be conveniently realized by the error code detector. The detector has simple design and low manufacturing cost.
Description
Technical field
The utility model relates to a kind of code error detecting instrument, more particularly, relates to a kind of code error detecting instrument that detects the high-speed communication system performance, belongs to digital communication technology field.
Background technology
In the performance test of digital communication system, use code error detecting instrument that its error performance is detected usually.Along with the continuous development of the communication technology, the conversion speed of communication system is more and more faster, for the high-speed communication system performance detection, needs to use the high speed error rate tester.At present, though developed the code error detecting instrument of some test higher rate signals,, be unfavorable for promoting the use of of product because its cost is higher, development and Design is comparatively complicated.
Summary of the invention
The utility model is for solving the code error detecting instrument cost technical problems of high of test higher rate signal in the prior art, a kind of code error detecting instrument is provided, produce and detecting unit by the error code in the code error detecting instrument, can realize easily high speed signal is carried out Error detection, and the detector design is easy, and manufacturing cost is lower.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of code error detecting instrument is used for the error rate of checkout equipment unit, and described code error detecting instrument comprises error code generation and detecting unit and main control unit; Described error code produce produce test patterns type data with detecting unit and with described test patterns type transfer of data to unit to be detected; The feedback code type transfer of data of described unit output to error code produces and detecting unit, and described error code produces with detecting unit and carries out Error detection according to test patterns type data and feedback code type data; Described main control unit produces with detecting unit error code and controls.
Further, described error code produces with detecting unit and produces and test transmission sign indicating number type data by transmitting channel.For reducing the interference in the signals transmission, guarantee the accuracy of signal transmission, the output of described transmitting channel connects the series circuit of resistance and electric capacity composition, and the other end of described electric capacity is connected with described unit on the one hand, connects power supply by potential-divider network on the other hand.
Wherein, described transmitting channel is a kind of in single channel or the double-channel.
Preferably, described transmitting channel is a double-channel, and described code error detecting instrument sends differential data signals by double-channel.
Again further, described error code produces with detecting unit and receives feedback code type data by receive channel.Simultaneously, disturb for reducing, described receive channel is connected with described unit by a filter capacitor.
Again further, described error code produces with detecting unit and carries out communication by communication interface circuit and main control unit.Described communication interface circuit comprises a RS232 changes the I2C interface module; Wherein, the RXD pin of described interface module is connected with the RXD pin with the TXD pin of described main control unit respectively with the TXD pin, and the SCL pin of interface module is connected with the SDA pin is corresponding with the SCL pin of detecting unit with the error code generation respectively with the SDA pin.By above-mentioned interface module, main control unit can produce error code by bus easily and detecting unit carries out initialization control, calculates the various states in the error rate and the demonstration test process.
Further, described sign indicating number type data are a kind of in PRBS7 pseudo noise code, PRBS23 pseudo noise code and the PRBS31 pseudo noise code, also can be a kind of in 40 user definition sign indicating number type data and 64 the user definition sign indicating number type data.
Preferably, above-mentioned unit to be detected is an optical fibre device.
Compared with prior art, advantage of the present utility model and good effect are:
1, error code produces with detecting unit and can produce and detect various pseudo noise codes and user definition sign indicating number type, and the error rate in the high-speed communication system is detected, and is simple in structure, easy to use;
2, for reduce disturbing, error code produce with the transmitting channel of detecting unit and receive channel in adopted Anti-interference Design respectively, improve the accuracy of detector information monitoring;
3, realize easily error code is produced and the initialization of detecting unit and the control in the running by main control unit, and can show various states in the running in real time, improve the friendly interface of code error detecting instrument, make things convenient for the user to observe and use code error detecting instrument;
4, whether receive normal signal according to main control unit, in testing process, can detect whole error code testing instrument system at any time and whether be in normal connection operating state, realized the function of the automatic debugging of system running state.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the utility model code error detecting instrument;
Fig. 2 is that error code produces circuit connection diagram with detecting unit among embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Referring to schematic block circuit diagram shown in Figure 1, code error detecting instrument described in the utility model comprises error code generation and detecting unit and main control unit, carries out the transmitted in both directions of data between two unit by a communication interface circuit.Main control unit carries out the initialization setting to each register in error code generation and the detecting unit, and error code generation and detecting unit produce corresponding test patterns type data according to the state of initialization setting, and transfer to unit.The feedback code type data of unit output input to error code again and produce and detecting unit, and this unit is according to the number of test patterns type data and feedback code type data computation error code, and this error code number is transferred to main control unit.Main control unit is monitored whole detection running, and finally calculates the error rate of unit.
Figure 2 shows that error code among embodiment of the utility model produces the circuit connection diagram with detecting unit, in the present embodiment, U1 is the master chip of error code generation and detecting unit, this chip provides a binary channels repeater or retimer, can the serial data of input is synchronous with the reference clock of this locality under the retimer pattern, sign indicating number type generator that it is built-in and detector can produce and detect various pseudo noise codes and user definition sign indicating number type.
In order to increase the quality of output signal, present embodiment adopts 34 pins and 35 pins as two-channel sendaisle.Wherein, the output pin 34 of U1 has adopted the anti-jamming circuit design, be specially: pin 34 connects the series circuit of being made up of resistance R 54 and capacitor C 7, the other end of capacitor C 7 unit direct and to be detected on the one hand is connected in order to test transmission error code data, on the other hand, be connected with power supply by a potential-divider network of forming by resistance R 48 and resistance R 49.Another output pin 35 of U1 has also adopted above-mentioned Anti-interference Design.And receive channel to be 8 pin of U1 be connected with unit by a filter capacitor C6.
The concrete course of work of foregoing circuit is as follows: main control unit carries out the initialization setting to each register of U1, and initiation parameter is passed through the communication interface circuit transmission to master chip U1.U1 sends corresponding differential data signals by output pin 34 and 35, and transfers to fiber plant unit to be detected.Simultaneously, the pin 46 of U1 sends a synchronous triggering signal and transfers to the fiber plant unit.The feedback data signal that the fiber plant unit returns enters error code generation and receiving element by the receive channel pin 8 of U1.Then, the comparator of U1 inside compares the differential data signals sent and the feedback data signal of reception, and the number of statistics error code, then with data by the communication interface circuit transmission to main control unit.Main control unit is monitored the running status in the testing process simultaneously according to the error rate of error code number computing equipment.If do not receive normal feedback signal, then judge the abnormal connection of test macro, and remind the connection status of tester's check system, improved the security performance of system.
It can be a kind of in PRBS7 pseudo noise code, PRBS23 pseudo noise code and the PRBS31 pseudo noise code that error code produces the numeric data code type that sends and receive with detecting unit, also can be a kind of in 40 user definition sign indicating number type data and 64 the user definition sign indicating number type data, can require to choose different sign indicating number types according to concrete unit and concrete detection.
Using above-mentioned code error detecting instrument, can detection rates be the optical fibre device of 155Mbps, 622Mbps, 1250Mbps, 2125Mbps, 2488Mbps and 4250Mbps etc., can certainly detect communication apparatus such as Ethernet at a high speed, SONET/SDH transmission network.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (10)
1, a kind of code error detecting instrument is used for the error rate of checkout equipment unit, it is characterized in that described code error detecting instrument comprises error code generation and detecting unit and main control unit; Described error code produce produce test patterns type data with detecting unit and with described test patterns type transfer of data to unit to be detected; The feedback code type transfer of data of described unit output to error code produces and detecting unit, and described error code produces with detecting unit and carries out Error detection according to test patterns type data and feedback code type data; Described main control unit produces with detecting unit error code and controls.
2, code error detecting instrument according to claim 1 is characterized in that, described error code produces with detecting unit and produces and test transmission sign indicating number type data by transmitting channel; The output of described transmitting channel connects the series circuit of resistance and electric capacity composition, and the other end of described electric capacity is connected with described unit on the one hand, connects power supply by potential-divider network on the other hand.
3, code error detecting instrument according to claim 2 is characterized in that, described transmitting channel is a kind of in single channel or the double-channel.
4, code error detecting instrument according to claim 3 is characterized in that, described transmitting channel is a double-channel, and described double-channel sends differential data signals.
5, code error detecting instrument according to claim 1 is characterized in that, described error code produces with detecting unit and receives feedback code type data by receive channel; Described receive channel is connected with described unit by a filter capacitor.
6, code error detecting instrument according to claim 1 is characterized in that, described error code produces with detecting unit and carries out communication by communication interface circuit and main control unit.
7, code error detecting instrument according to claim 6 is characterized in that, described communication interface circuit comprises a RS232 changes the I2C interface module; Wherein, the RXD pin of described interface module is connected with the RXD pin with the TXD pin of described main control unit respectively with the TXD pin, and the SCL pin of interface module is connected with the SDA pin is corresponding with the SCL pin of detecting unit with the error code generation respectively with the SDA pin.
According to each described code error detecting instrument in the claim 1～7, it is characterized in that 8, described sign indicating number type data are a kind of in PRBS7 pseudo noise code, PRBS23 pseudo noise code and the PRBS31 pseudo noise code.
According to each described code error detecting instrument in the claim 1～7, it is characterized in that 9, described sign indicating number type data are a kind of in 40 user definition sign indicating number type data and 64 the user definition sign indicating number type data.
According to each described code error detecting instrument in the claim 1～7, it is characterized in that 10, described unit is an optical fibre device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200213760U CN201185424Y (en) | 2008-04-23 | 2008-04-23 | Error code detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200213760U CN201185424Y (en) | 2008-04-23 | 2008-04-23 | Error code detector |
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| CN201185424Y true CN201185424Y (en) | 2009-01-21 |
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| CNU2008200213760U Expired - Lifetime CN201185424Y (en) | 2008-04-23 | 2008-04-23 | Error code detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502835A (en) * | 2014-12-09 | 2015-04-08 | 中国航空工业集团公司第六三一研究所 | Serial link in-chip signal quality oscilloscope circuit and method |
| CN104820182A (en) * | 2015-05-05 | 2015-08-05 | 浪潮电子信息产业股份有限公司 | Signal integrity test method of SAS 12G RX link |
-
2008
- 2008-04-23 CN CNU2008200213760U patent/CN201185424Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502835A (en) * | 2014-12-09 | 2015-04-08 | 中国航空工业集团公司第六三一研究所 | Serial link in-chip signal quality oscilloscope circuit and method |
| CN104502835B (en) * | 2014-12-09 | 2017-05-17 | 中国航空工业集团公司第六三一研究所 | Serial link in-chip signal quality oscilloscope circuit and method |
| CN104820182A (en) * | 2015-05-05 | 2015-08-05 | 浪潮电子信息产业股份有限公司 | Signal integrity test method of SAS 12G RX link |
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Granted publication date: 20090121 |