CN109000734A - The method of real-time monitoring optical module working condition ageing process - Google Patents
The method of real-time monitoring optical module working condition ageing process Download PDFInfo
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Abstract
The method of a kind of real-time monitoring optical module working condition ageing process disclosed by the invention, it is desirable to provide a kind of to facilitate operation, testing efficiency is high, not easy to make mistakes, can monitor the test device of optical module working condition in real time.The technical scheme is that: interface circuit parallel connection two-way microprocessor, the microprocessor optical module communication bus specified by analog switching circuit connection, acquire the data of tested optical module, I2C communication is converted into the usb communication of microprocessor by interface circuit, the optical module ageing information monitored is passed into automatic monitoring of software built in microprocessor, automatic monitoring of software carries out real time on-line monitoring to the working condition of the optical module in all burn-in boards, diagnosis, test the tested working parameters of optical module all the time, it is automatic to obtain eye figure and measurement sensitivity information, grasp each optical module degree of aging, implement fault diagnosis service, inquiry, trace the optical module parameter information obtained, find out the position that failure occurs in link.
Description
Technical field
The present invention relates to photoelectric conversion module in area of optical telecommunication networks, to monitor working condition in real time in process of production old
The method of chemical industry sequence.
Background technique
Fiber optic communication is in occupation of leading position as the covering of network is increasingly wider and communication is held in present information network
Amount is continuously increased so that the management work of communication link becomes complicated.Core devices of the optical transceiver module as Optical Access Network
Main line optical transmission system has been pushed to develop to inexpensive direction.Optical module is one and is connect by opto-electronic device, functional circuit and light
The photoelectric conversion module of the structural members such as mouth composition.Optical module is mainly used for the transmitting-receiving of optical signal, and optical signal passes through intelligent acess light
Optical signal can be switched to electric signal by module.The information of electric signal can also be changed into optical signal by optical module simultaneously, then
It is sent by optical fiber.As long as optical module is composition optical transmitter and receiver component part, in optical transmitter and receiver, the significance level of optical module
Considerably beyond core chips.After being powered up, optical module is in ceaselessly luminescence process, must have decline over time
Subtract, the performance degradation of SFP optical module is mainly the degeneration of Output optical power, and therefore, the work for detecting optical module is particularly significant.Light
Module is called optic module (transceivermodule).Optical module belongs to a kind of electronic component, while band inside optical module
There is optical device, optical module passes through the 12C bus interface of standard, includes SCL and SDA, is communicated with the external world, can complete data
Transmission exchange.Optical module operating temperature is too high, and the degree of aging of device is faster.Therefore during the large-scale production of optical module
It carries out burn-in test and temperature cycles screens most important be necessary.It is well known that aging process can expose very
The defect of polyelectron product, such as rosin joint, soft water station and by welding bring quality risk.By the electronic product of aging process
It can guarantee the stability to work long hours and reliability.There are up to a hundred capacitance-resistances and number on the circuit board of one common optical module
IC chip, in mass production, the welding of these capacitance-resistances and chip is completed by chip mounter, due to processing procedure control
System, technology controlling and process, the factors such as equipment difference, it is bad to have a certain proportion of patch, this undesirable product of part patch will be
It is exposed in aging process.Simultaneously because production optical module supplied materials also can exist a part it is bad, have it is bad not
It will lead to optical module to fail immediately, but fail after the short time powers on use, the bad of this part also will be in aging work
It is exposed in sequence.Therefore aging process is very important a procedure in the procedure for producing of optical module.At this stage, own
Optical module manufacturer need to find by the test step after aging process aging process generate bad optical module, this is right
The positioning that exception occurs in optical module in ageing process is inaccurate, and is difficult to know that optical module has been aging and how long has occurred afterwards
Failure, failure cause is further analyzed and lacks many reference datas, thus may bring some potential quality risks,
It hides some dangers for for the steady operation of optical module.Therefore the test device that optical module working condition can be monitored in real time in aging seems
It is extremely important.Aging is the working performance of authentication module under the conditions of simulating the limit, it is therefore desirable to power on module in work shape
State.Accelerated aging test is that the common method of life prediction is carried out to electronic component, is in the mistake for not changing electronic component
Under the premise of imitating mechanism, accelerate degradation using the method for increasing stress.And it defines photoelectric device accelerate always
The testing time for changing test at least needs 2000h, and accelerating temperature is 175 DEG C.The compliance test result major way of aging has 2 kinds: 1,
It needs to test parameters after aging, for example the indexs such as optical power, extinction ratio, sensitivity are met the requirements；If 2,
Need especially to verify, can compare under the parameter differences and room temperature before aging and after aging with the difference etc. under high/low temperature.SFP
How aging effect is detected after optical module aging, there is presently no a more feasible technical solutions.SFF.8472 agreement rule
Five Important Parameters of optical module are determined: the range and resolution ratio of operating temperature, voltage, bias current, transmitting and received optical power.
Realize that optical transceiver module digital diagnosis function is mainly the chip for using integrated digital diagnosis monitoring (DDM) function at present, as
Center control and five analog quantitys of data processing parametric calibration mode, using SFF.8472 agreement forward direction internal calibration or outside
The parametric calibration of numerical diagnostic is calibrated in portion, is generallyd use manual test mode and is carried out burn-in test.In SFP optical module, due to
LED power supply circuit is influenced by baking oven set temperature, and LED operation electric current can change with the variation of oven temperature, to accelerate
The variation of the degeneration factor of degradation.Operating temperature is excessively high, can accelerate the aging of device, reduces the optical module service life；Work temperature
Height is spent, the nominal performance of optical module is affected, job insecurity, so that mistake occurs in communication data；Operating temperature is excessively high,
The optical power of optical module will become larger, and receiving signal just will appear mistake, or even can burn out optical module, cause optical module can not be just
Often work.When the parameter to optical module is tested, usually pass through the waveform and record data on eye-observation instrument, this
A process is comparatively laborious, error is easy, under testing efficiency is relatively low.The operating temperature of real-time monitoring optical transceiver module, power supply electricity
Pressure, other important parameters such as laser bias current detect the real-time of these parameters, and existing technology is only to optical module
It powers on, the position that failure occurs in link is found out using network management unit, without the function of monitoring, this is difficult to obtain light
The working condition of module.
Summary of the invention
Facilitate operation in response to the problems existing in the prior art, the purpose of the present invention is to provide a kind of, testing efficiency is high, is not easy
Error, can effectively shorten the optical module accelerated ageing testing time, can monitor optical module in real time in the ageing process of optical module production
Working condition, find the problem in time, quality risk analysis foundation, real time monitoring optical module working condition ageing process be provided
Test method.
The technical solution adopted by the present invention to solve the technical problems is a kind of real time monitoring optical module working condition aging
The method of process has following technical characteristic: by interface circuit, microprocessor, the power supply of analog switch and offer working power
Circuit is arranged on optical module burn-in board, interface circuit two-way microprocessor at least in parallel, microprocessor 1, microprocessor 2
Interface is read by the information of the concatenated analog switch 1 of correspondence, the difference parallel connection road the n optical module of analog switch 2；Microprocessor passes through
The specified optical module communication bus of analog switching circuit connection, acquires the data of tested optical module, and interface circuit turns I2C communication
The optical module ageing information monitored is passed to automatic monitoring of software built in microprocessor by the usb communication for changing microprocessor into,
Automatic monitoring of software carries out real time on-line monitoring, diagnosis to the working condition of optical module on all optical module burn-in boards, surveys
The working parameters for trying tested optical module working condition, operating temperature, supply voltage and laser bias current all the time, from
It is dynamic to obtain eye figure and measurement sensitivity information, each optical module degree of aging is grasped, implements fault diagnosis service, summarizes, inquires, chases after
It traces back and obtains the parameter information of optical module, find out the position that failure occurs in link.
The invention has the following beneficial effects:
Facilitate operation.The present invention is using the interface circuit that is arranged on optical module burn-in board, microprocessor, analog switch and
The test device of the power circuit composition real time monitoring optical module working condition ageing process of working power is provided, power circuit mentions
For all component working powers of burn-in board, interface circuit will connect burn-in board and host computer, and microprocessor is responsible for
The data acquisition and processing (DAP) of all optical modules, analog switching circuit are responsible for the specified optical module communication bus of connection.Pass through micro- place
The operating mode for managing device control analog switch selects to carry out the optical module that data communication needs to acquire data between optical module, real
When monitor its tested optical transceiver module receiving and transmitting signal parameter information, obtain optical module parameter information, circuit structure is simple, at low cost
It is honest and clean.
Testing efficiency is high.The present invention uses interface circuit parallel connection microprocessor, and microprocessor passes through corresponding concatenated simulation
Switch, the information of the road n in parallel optical module read interface, and the disposable test for completing dozens of optical module, operation is very easy；.
Bias current by monitoring laser controls optical power to judge whether the service life of laser has reached the limit.By supervising in real time
Optical transceiver module operating voltage and temperature are surveyed, can have soon found that the potential problem of optical module, testing efficiency is high.
It is not easy to make mistakes.The present invention optical module communication bus specified by analog switching circuit connection using microprocessor,
The data of tested optical module are acquired, I2C communication is converted into the usb communication of microprocessor by Processing Interface circuit, by what is monitored
Optical module ageing information passes to microprocessor, carries out real-time monitoring to the working condition of the optical module in all burn-in boards, examines
Disconnected, accurate recording is tested optical module working condition all the time, operating temperature, supply voltage, the important ginseng of laser bias current
Number, can monitor in real time, test optical module working condition and its ageing process, summarize, inquire, trace acquisition optical module parameter
Information finds out the position that failure occurs in link, not easy to make mistakes.
High load capacity.The present invention reads interface using the information of analog switch One-to-one communication n parallel connection road optical module, adopts
It is realized with One-to-one communication analog switch, greatly improves the load-carrying ability of I2C.Because the main function of analog switch is
Communicate load-carrying ability to improve I2C, on a burn-in board may 50, band or more modules, if only
Using I2C communication come 50 slaves of band, it is easy to cause I2C carrying load ability inadequate, therefore be opened using One-to-one communication simulation
It closes to realize, greatly improves the load-carrying ability of I2C.
Test device using the present invention with real time monitoring optical module working condition, can be in real time to fixed optical module
Working state real-time monitoring can also monitor the working condition of the module in all burn-in boards in real time, and by upper
Position machine exploitation, can be with the working condition of accurate recording optical module all the time, to summarize, inquire and to trace.By in real time
The general information of optical module is monitored, the working performance of real-time diagnosis optical module can be with help system management prognostic transceiver module
Service life, monitoring devices working condition and degree of aging, it can be determined that and suspected fault device is replaced, and verify in installation on site
Whether module is compatible with, and improves system maintenance, provides a kind of reliable performance monitoring means for system.Solves the prior art only
Optical module is powered on, no monitoring function cannot obtain the deficiency of the working condition of optical module.
Detailed description of the invention
Fig. 1 is the hardware construction schematic diagram of present invention monitoring optical module ageing process test device.
Specific embodiment
Refering to fig. 1.According to the present invention, a method of real time monitoring optical module working condition ageing process has as follows
Technical characteristic: interface circuit, microprocessor, analog switch and the power circuit for providing working power are arranged in optical module aging
On test board, interface circuit two-way microprocessor at least in parallel, microprocessor 1, microprocessor 2 are opened by corresponding concatenated simulation
The information for closing 1, the analog switch 2 difference parallel connection road n optical module reads interface；Microprocessor is connected to specified by analog switching circuit
Optical module communication bus, acquire the data of tested optical module, interface circuit leads to the USB that I2C communication is converted into microprocessor
The optical module ageing information monitored is passed to automatic monitoring of software built in microprocessor by letter, and automatic monitoring of software is to all
The working condition of optical module carries out real time on-line monitoring, diagnosis on optical module burn-in board, and the tested optical module of test is every when per
Carve working condition, operating temperature, supply voltage and laser bias current working parameters, it is automatic to obtain eye figure and test spirit
Sensitivity information grasps each optical module degree of aging, implements fault diagnosis service, summarizes, inquires, tracing the parameter for obtaining optical module
Information finds out the position that failure occurs in link.
In the embodiment described below, a kind of device of real-time monitoring optical module working condition ageing process includes: to set
Set the interface circuit on optical module burn-in board, microprocessor and provides the power circuit of working power at analog switch,
In, power circuit provides all component working powers of burn-in board, and interface circuit will connect burn-in board and host computer,
Microprocessor is responsible for the data acquisition and processing (DAP) of all optical modules, and it is total that analog switching circuit is responsible for the specified optical module communication of connection
Line.Microprocessor controls the operating mode of analog switch by analog switching circuit, selects to carry out data communication between optical module
Need to acquire the optical module of data, its tested optical transceiver module receiving and transmitting signal parameter information of real-time monitoring obtains optical module parameter
Information.Interface circuit two-way microprocessor at least in parallel, microprocessor pass through corresponding concatenated analog switch, the road n in parallel optical mode
The information of block reads interface；The microprocessor optical module communication bus specified by analog switching circuit connection, acquires tested light
I2C communication is converted into the usb communication of microprocessor, turns 12C communication mode with USB by the data of module, Processing Interface circuit, will
The optical module ageing information monitored passes to microprocessor, carries out to the working condition of the optical module in all burn-in boards real-time
Monitoring, diagnosis, accurate recording be tested the working condition of optical module all the time, operating temperature, supply voltage, emit optical power,
Received optical power, laser bias current important parameter.Summarize, inquire, the structure composition of retrospective analysis module, to modules
Correlated performance carries out the optical module information of analysis acquisition.
The present embodiment is by taking SFP optical module as an example.It is 50 SFP optical modules that a usual burn-in board is fully loaded, in power supply
In the design of circuit, choice of the present invention is very big, right because this test device will not relate to the processing of small-signal
It is very big in the signal-to-noise ratio amount of redundancy of power supply, it might even be possible to directly select the power module that 220V exchange turns 3.3V direct current, specified electricity
Flow 20A.The operating current of one optical module is 0.3A, and the supply currents of 50 optical modules is 15A, consider further that microprocessor,
The rated current of the power consumption of interface circuit and analog switch, 20A is more than sufficient.It can choose MICROCHIP on interface circuit
The MCP2221A interface chip of company perfect can realize that I2C turns usb communication, while to the Compatibility of Operating System of microprocessor
It is very strong.Microprocessor can choose the microprocessor chip that ADI company model is ADuC7020, and analog switch can choose ADI
Company model is the analog switch of ADG706BRUZ, and 16 road I2C bus switchs may be implemented in analog switch.It is therefore possible to use
The microprocessor chip of two ADuC7020 drives the analog switch of two ADG706BRUZ, each ADG706BRUZ respectively
13 optical modules of analog switch band, can be realized.
The optical module information that burn-in board monitors passes to microprocessor, and the communication modes of optical module are to use
I2C communication, and the communication modes of microprocessor use usb communication, it is therefore desirable to I2C communication is converted by an interface circuit
Usb communication.
Power supply needed for power circuit mainly provides entire test device, including interface circuit power supply, power supply of microprocessor, mould
Quasi- Switching Power Supply and test in need optical module power supply.
Interface circuit passes through 2 wire serial bus pair by 12C bus communication interface series connection analog switch 1, analog switch 2
SFP optical module accesses, and the electronics formula of erasing of reading-writing optical module can make carbon copies the data information of read-only memory EEPROM.Interface
Circuit realizes that on-line monitoring and digitized bus protocol are converted to the relevant parameter of optical module.Bus protocol is joined to correlation
Number realizes on-line monitoring and a digitized concrete norm, the concrete norm principle of digital diagnosis function.Bus association
View defines the inside modules storage space that can be used by producer and user, passes through the software control foot of optical module, Bian Keshi
Real time monitoring now is carried out to the general parameter information of optical module, user can realize setting optical module temperature warning thresholding with it
Etc. many specific functions.Bus protocol defines optical module operating temperature, voltage, bias current, transmitting and received optical power five
The range and resolution ratio of a important monitoring parameter value, and timing is refreshed, the time interval of refreshing self-setting as needed,
More new data in real time completes function for monitoring, in addition, judging whether the parameter value of monitoring closes according to the alarm threshold of optical module
Lattice, and corresponding processing is made respectively.Bus protocol provides for the E2PROM of optical module to be divided into 2 storage units, and size is
256 bytes, and retain address of cache of the SFP/GBIC at the AOH of address in bus protocol, to store the one of SFP optical module
A little general informations, such as wavelength, transmission range, the type of optical module, sequence number, date of manufacture and the manufacturer of optical module etc., this
Increase the storage unit of 256 bytes at external address A2H.
Microprocessor is acquired from analog switch 1, the acquisition optical module internal operating voltages of analog switch 2, temperature, partially in real time
Electric current, the parameter signal of transmitting and received optical power are set, the calibration demarcated respectively to this 5 analog quantitys is digitized
Measurement result, is calculated calibration constants solidification, and measurement result is stored in the address serial bus of register main device address A2H
Real-time diagnosis meets EL96 into L19 byte address.Microprocessor is for warning/alarm flag bit and threshold value, system mode and use
Family Custom tags position, is stored in A2H unit, visit by two-wire interface 12C and draw.In addition, also providing each pin
State mirror image and the writable storage region of user.At address serial bus 101000X (AOH), the serial D of SFPMSA is defined
There are 96 bytes, be 0.95 storage unit, contain the basic area ID and Extended ID area, the data address in the basic area ID is from 0.63
Extended ID area is from 64.95.
Microprocessor is to realize the core of modular diagnostic function as single chip control unit.Microprocessor is built-in certainly
Dynamic monitoring of software tests the parameter of optical transceiver module, automatic to obtain the information such as eye figure and measurement sensitivity, and automation is surveyed
It tries each functional module characteristic and working performance is analyzed.Automatic monitoring of software real-time diagnosis optical module workability online
Can, situations such as reaching test device working condition in advance, grasp device aging degree, implement fault diagnosis service, provides best
Performance monitoring means.Microprocessor module storage region contain optical module general information and basic configuration information (including
Module serial number, software version number), the information write-in of memory block is written and read by 12C communication, is achieved.For light emitting
Module needs to consider average light power and extinction ratio the two important parameters.Automatic monitoring of software can be mended by inquiry temperature
Table is repaid to realize the bias current for adjusting optical module, 5 parameter values specified in agreement is monitored, and timing is refreshed, refreshes
Time interval self-setting as needed, more new data in real time completes function for monitoring.In addition, according to the alarm threshold of module
Value judges whether the parameter value of monitoring is qualified, and makes corresponding processing respectively.Module storage region contains the general of module
Information and basic configuration information (including module serial number, software version number) connect the information reading of memory block by 12C communication
Mouth and access information write-in are written and read, achieve.Automatic monitoring of software interfaces windows mainly use the programming language C of object-oriented
Exploitation.The design of SFP optical module slave computer software is designed essentially according to the demand of above several aspects.Including being initialized to MCU
(clock, pin is enabled, the setting of timer etc.) reads register module and enters normal mode of operation, debugging mode and write code
Mode sets refresh time, monitoring parameters information.Automatic each functional module of monitoring of software includes: numerical diagnostic monitoring modular, property
It is adjustable module, calibration setup module, automatic monitoring modular and database, wherein numerical diagnostic monitoring modular monitors 5 simulations
Parameter, warning and alarm flag bit, periodic refreshing are shown, are deposited according to corresponding in the customized reading optical module of SFF8.472 agreement
Information in device address is simultaneously parsed, be converted into as defined in format show；It is direct that property regulation module adjusts optical module modulation
The electric current MOD value of light emitting power is influenced, LOS thresholding and APD voltage etc. is arranged in bias current BIAS；Calibrate setup module school
The calibration parameter of quasi- transmitting and received optical power, so that these parameters are within the limits prescribed, and stores information in chip
Portion makes carbon copies in read-only memory EEPROM；Automatic monitoring modular, automatic calibration transmitting terminal transmitting optical power and receiving end
Received optical power measures the parameters such as the bit error rate, extinction ratio and sensitivity, and saves the information such as eye figure with certain format；
Database saves test data and calls previously saved data, and inside modules alarm threshold or temperature compensation table etc. are believed
Breath is modified etc. to database by visualization procedure and is operated.
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Other than feature and/or step, it can combine in any way.This specification, including any accessory claim, abstract and attached
Any feature disclosed in figure, unless specifically stated, can by it is other equivalent or have similar purpose alternative features replaced.
That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics.
Claims (10)
1. a kind of method for monitoring optical module working condition ageing process in real time, has following technical characteristic: micro- by interface circuit
Processor, analog switch and the power circuit for providing working power are arranged on optical module burn-in board, and interface circuit is at least
Two-way microprocessor in parallel, microprocessor 1, microprocessor 2 are in parallel respectively by corresponding concatenated analog switch 1, analog switch 2
The information of the road n optical module reads interface；The microprocessor optical module communication bus specified by analog switching circuit connection, acquisition
The data of tested optical module, I2C communication is converted into the usb communication of microprocessor by interface circuit, and the optical module monitored is old
Change information and pass to automatic monitoring of software built in microprocessor, automatic monitoring of software is to optical mode on all optical module burn-in boards
The working condition of block carries out real time on-line monitoring, diagnosis, tests tested optical module working condition, operating temperature, confession all the time
The working parameters of piezoelectric voltage and laser bias current, it is automatic to obtain eye figure and measurement sensitivity information, grasp each optical module
Degree of aging implements fault diagnosis service, summarizes, inquires, tracing the parameter information for obtaining optical module, finding out failure in link and go out
Existing position.
2. the method for real-time monitoring optical module working condition ageing process as described in claim 1, it is characterised in that: power supply electricity
Road provides all component working powers of burn-in board, and interface circuit will connect burn-in board and host computer, microprocessor
It is responsible for the data acquisition and processing (DAP) of all optical modules, analog switching circuit is responsible for the specified optical module communication bus of connection.
3. the method for real-time monitoring optical module working condition ageing process as described in claim 1, it is characterised in that: micro process
Device controls the operating mode of analog switch by analog switching circuit, and progress data communication between optical module is selected to need to acquire number
According to optical module, its tested optical transceiver module receiving and transmitting signal parameter information of real-time monitoring obtains optical module parameter information.
4. the method for real-time monitoring optical module working condition ageing process as described in claim 1, it is characterised in that: interface electricity
Road accesses to SFP optical module by 2 wire serial bus by 12C communication interface series connection analog switch 1, analog switch 2,
The electronics formula of erasing of reading-writing optical module can make carbon copies the data information of read-only memory EEPROM.
5. the method for real-time monitoring optical module working condition ageing process as described in claim 1, it is characterised in that: micro process
Device acquire in real time from analog switch 1, analog switch 2 obtain optical module internal operating voltages, temperature, bias current, transmitting and
The parameter signal of received optical power, the calibration demarcated respectively to this 5 analog quantitys obtain digitized measurement as a result, will survey
The address serial bus real-time diagnosis that amount result is stored in register main device address A2H meets EL96 into L19 byte address.
6. the method for real-time monitoring optical module working condition ageing process as claimed in claim 5, it is characterised in that: address string
At the AOH of row bus 101000X, the serial D definition of multi-source SFPMSA agreement has 96 bytes, is 0.95 storage unit, includes
The basic area ID and Extended ID area, the data address in the basic area ID is from 0.63 Extended ID area from 64.95.
7. the method for real-time monitoring optical module working condition ageing process as described in claim 1, it is characterised in that: micro process
Device is stored in A2H unit, passes through for warning/alarm flag bit and threshold value, system mode and user's Custom tags position
Two-wire interface 12C bus, which visit, draws, in addition, also providing the state mirror image of each pin and the storage region that user is writable.
8. the method for real-time monitoring optical module working condition ageing process as described in claim 1, it is characterised in that: interface electricity
On-line monitoring and digitized bus protocol are converted to be realized on road to the relevant parameter of optical module.
9. the method for real-time monitoring optical module working condition ageing process as described in claim 1, it is characterised in that: micro process
Device module storage region contains the general information and basic configuration information of optical module: module serial number, software version number pass through
12C, which is communicated, to be written and read the information write-in of memory block, achieves.
10. the method for real-time monitoring optical module working condition ageing process as described in claim 1, it is characterised in that: automatic
Monitoring of software contains numerical diagnostic monitoring modular, property regulation module, calibration setup module, automatic monitoring modular and data
Library, wherein numerical diagnostic monitoring modular monitors that 5 simulation parameters, warning and alarm flag bit, periodic refreshing are shown, according to
The information in register address is corresponded in the customized reading optical module of SFF8.472 agreement and is parsed, and defined lattice are converted into
Formula is shown；Property regulation module adjusts optical module modulation and directly affects the electric current MOD value of light emitting power, bias current BIAS,
LOS thresholding and APD voltage are set；The calibration parameter for calibrating setup module calibration transmitting and received optical power, will be in prescribed limit
Interior calibration parameter information is stored in the EEPROM of chip interior；Automatic monitoring modular, automatic transmitting terminal of calibrating emit light function
The received optical power of rate and receiving end is measured the parameters such as the bit error rate, extinction ratio and sensitivity, and is saved with certain format
Eye figure information；Database saves test data and calls previously saved data, by optical module internal alarm threshold value or temperature
Degree compensation table etc. information modify operation to database by visualization procedure.
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| CN115529080A (en) * | 2022-06-21 | 2022-12-27 | 武汉联特科技股份有限公司 | System for realizing business test of optical module in aging process |
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