JP2002286811A - Individual environmental testing device, individual environmental testing method and module testing device for optical transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a testing device which can conduct an environmental test with a plurality of modules under different test conditions. SOLUTION: This individual environmental testing device is enclosed by an enclosure made of heat insulation member, and it is provided with a plurality testing parts 100A, 100B, 100C, and 100D to which modules are attached. A testing instruction of modules is received every testing part, and a current is respectively applied to each of modules that are respectively attached to the testing parts. Internal temperatures are adjusted every testing part, and the modules attached to the respective testing parts are tested.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test apparatus for an optical transmission module capable of converting an electric signal and an optical signal into both, and capable of transmitting and receiving an optical signal via a fiber.
In particular, the present invention relates to an optical transmission module test apparatus that performs an aging or environmental test while a voltage is applied to the optical transmission module via a power supply cable.

[0002]

2. Description of the Related Art Conventionally, an aging and test method in an optical transmission module test apparatus is such that a plurality of samples of the same type or samples under the same test conditions are put together into the same test chamber and are then subjected to the same test conditions. Aging and testing.

[0003] In the production process of the optical transmission module, the optical transmission module is manually assembled and adjusted, and the completed optical transmission module is supplied to a process of aging and testing. The adjusted optical transmission module is set on a test board, and is put into a test apparatus equipped with a test chamber capable of loading a plurality of samples and a door covering the entire test chamber. In the test chamber, a power supply cable and Attach the fiber cable and connect to the test mechanism.
Since the adjustment work is performed for each optical transmission module one by one, the adjustment work is supplied to a step of performing aging or a test after the end of the adjustment work. The test needs to be performed in a test room under a constant temperature, which is a test condition, and it is impossible to insert the optical transmission module during the test because the temperature in the test room changes. For this reason, it is necessary to put the optical transmission modules to be put into the test apparatus all at once and start the test. For this reason, it is necessary to wait until the adjustment is completed for the number of optical transmission modules that can be performed at the same time under the same test conditions.

[0004] Conventionally, Japanese Patent Application Laid-Open No. 11-190176 discloses an environmental test apparatus provided with a plurality of shelves and adjusting the internal environmental conditions. In this prior art, a used section is determined for each shelf or a plurality of shelves, and a test is performed for each used section under the same test conditions. In addition, a connecting member is inserted between adjacent doors in order to easily change the use section. When loading / unloading a sample only in a specific use section, the door of the specific use section is opened, and the doors of the other sections are maintained in a closed state.

Japanese Unexamined Patent Publication No. Hei 8-232532 discloses a door provided with a door that slides open and closed by being guided by a guide rail when a test sample is put into a constant temperature bath. A thermostat that is not required is shown.

[0006]

In a conventional test apparatus, when testing an optical transmission module, it is necessary to collectively input the modules at once and start the test. JP-A-11-
Also in the techniques disclosed in JP 190176 and JP-A-8-232532, only the optical transmission module under the same test conditions can be tested at a time, so the adjusted optical transmission module is put in. Unable to put in until all quantities are ready. For this reason, there is a problem that the input waiting time occurs and the production lead time is increased.
Further, since it is possible to cope only with the same test condition, even if there are shelves in which no articles are loaded, it is not possible to load articles with different test conditions.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and to provide an individual environment test apparatus, an individual environment test method, and an optical transmission system capable of performing environmental tests on a plurality of modules under different test conditions. An object of the present invention is to provide a module test apparatus.

[0008]

According to the present invention, there is provided an optical transmission module test apparatus for testing an optical transmission module for transmitting and receiving an optical signal through an optical fiber. A plurality of test units configured and mounted with the optical transmission module; a power supply voltage supply unit configured to apply a voltage to the optical transmission module mounted on each of the plurality of test units; and the power supply voltage supply unit A control unit that controls the test of the optical transmission module mounted on each of the plurality of test units, and a reception unit that receives a test instruction of the optical transmission module in each of the plurality of test units. Means. Each of the plurality of test units, a heating unit that heats the inside of the test unit, a cooling unit that cools the inside of the test unit,
Temperature adjusting means for adjusting the temperature inside the test section by adjusting the heating means and the cooling means. The control unit controls the temperature control unit for each of the plurality of test units according to the test instruction received by the receiving unit, and controls the test. Thus, a plurality of optical transmission modules can be tested under different test conditions. Also, during aging or during testing, the optical transmission module can be inserted without affecting the test conditions. Therefore, the production lead time can be reduced.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an individual environment test apparatus for an optical transmission module according to an embodiment of the present invention.

In this apparatus, an outer wall is constituted by a heat insulating member, and a plurality of test chambers (test sections) 100A, B, C, and D where the optical transmission module is mounted, and each of the plurality of test sections is mounted. A power supply voltage supply unit 28 for applying a voltage to the optical transmission module
And a control unit 31 for controlling the test of the optical transmission module mounted on each of the plurality of test units.
And an operation panel 14, a keyboard 25, and an operation panel 60 of receiving means for receiving a test instruction of the optical transmission module in each of the plurality of test units 100A, B, C, and D.

The housing on the left side in FIG.
The operation panel 60, the display unit 24, the keyboard 2
5, a power supply voltage supply unit 28, an optical waveform measuring device 30, and a control unit 31. In addition, the right housing has a plurality of test chambers 1.
00A, B, C, D. Multiple test rooms 100A
Each of B, C, and D includes a temperature detection unit 13 for detecting the temperature in the room, a heating mechanism 9 for heating the inside of the test chamber, a cooling mechanism 10 for cooling the inside of the test chamber, a heating mechanism 9 and a cooling mechanism. The apparatus includes a temperature adjustment mechanism 11 for adjusting the temperature inside the test chamber by adjusting the mechanism 10, and an individual test control unit 33 for controlling these to control the test chamber.

An optical transmission module 1 as a sample is set in a test room 100A, B, C, and D while being set on a test board 2. A heat insulating portion 12 is provided on the outer wall of each test room, such as between the adjacent test rooms 100A and 100B, or between the test rooms 100A and 100C, to block the influence of the mutual room temperature. When the test board 2 is taken in and out of the test room 100A, the door 22 is opened and closed. The door 22 has a heat insulating portion 15 that closes the inside of the test chamber 100A to shut off the influence of the outside air temperature when closed.
Further, the heat insulating portion 12 is provided with a cable hole 27 used when connecting the power supply cable 8 and the fiber cable 29, and the cable hole 27 is provided when the power supply cable 8 and the fiber cable 29 are attached. In addition, an outside air shutoff unit 3 for preventing outside air from entering the test chamber 100
2 is fitted. The outside air cutoff portion 32 is formed of rubber having elasticity in a truncated cone shape, and is fitted to seal the cable hole 27 when the fiber cable 29 and the power supply cable 8 are inserted. Prevent the outside air from entering from 27.

The control unit 31 controls the individual test control unit 33 for each of the test units in accordance with the test instructions received from the operation panel 60 and the keyboard 25, and controls the test. In addition, the control unit 31 performs an instruction of a set temperature in each test chamber and monitoring of a test time via the communication cable 21 such as a GP-IB cable. In the present embodiment, the control unit 31 controls the temperature of each test room and performs a test, so that test conditions differ for each test room,
Each test can be performed at a different timing. The instruction from the control unit 31 to each individual test control unit 33 may be performed in a time-division manner, or a control line may be provided, and the instruction may be performed via each control line. FIG. 11 is an explanatory diagram of control lines for explaining a connection relationship between the control unit 31 and each individual test control unit 33. Figure 1
1, the control unit 31 and the individual test control units 33A, B,
Each of C and D is connected by a signal line. The signal lines are bidirectional in the up direction and the down direction, and are each time-divided into four channels, and each channel is assigned to each of the individual test controllers. The control unit 31 switches the channel of the control signal, and transmits a test condition such as a set temperature to each individual test control unit 33 by a control signal. Further, each individual test control unit 33 detects the occurrence of a plurality of types of errors in each test room, and notifies the control unit 31 of the occurrence of the error and the type of the error via the assigned channel. Upon receiving the error notification, the control unit 31 displays the number of the test room in which the error has occurred and the type of the error on the display unit 24, and can stop the test in the relevant test room. Since the error is detected by each of the individual test controllers 33, the error can be detected for each test room, and only the test room where the error has occurred can be stopped. Further, the occurrence of an error may be output as sound. As an error in the test room, for example, there is a case where the temperature rises above a set temperature.

The power supply unit 28 includes the optical transmission module 1
The power required to operate the power supply is supplied via a power supply cable 8. The optical waveform measuring device 30 determines whether or not the function that the optical transmission module 1 should have is satisfied from the waveform of the optical signal obtained from the fiber cable 29. The keyboard 25 receives test parameters such as a test temperature, a test time, and an applied voltage value determined for each type of the optical transmission module 1, and receives a test instruction of a specific command at the start and end of the test. The display unit 24 such as a display functions as an output unit that displays a parameter / command received from the keyboard or displays an error when an error occurs. The temperature detector 13 detects the temperature inside the test chamber 100. Fiber cable 29
Is connected to the fiber 7 of the optical transmission module 1,
Optical signals are transmitted and received between the test mechanism 23 and the optical transmission module 1.

In the present embodiment, a database is created in advance in the memory of the storage means provided in the control unit 31 for test conditions and test items for each type of optical transmission module. FIG. 10 illustrates the contents of the database. In FIG. 10, the temperature conditions 1, 2, and 3 and the test items 1 and 2 for each product number corresponding to the type of optical transmission module.
2 and 3 are registered in advance. For example, product number 10
1 is set to 25 degrees as the first temperature condition, minus 40 degrees as the second temperature condition, and 85 degrees as the third temperature condition. It is set to execute the third test item. As the first to third test items, an applied voltage value, a test time, and the like are registered in advance. Keyboard 25
When the control unit 31 receives the input of the product number, the control unit 31 refers to the database shown in FIG. 10, extracts the registered temperature conditions and test items, and displays them on the display unit 24.
The test is started according to the extracted temperature conditions and test items. In addition, registration of data in the database shown in FIG.

FIG. 2 shows an overall operation flow chart of the optical transmission module individual environment test apparatus according to the embodiment of the present invention.

In FIG. 2, n · m indicates the test number of the optical transmission module and the test number of the test board, where n is used at the start of the test and m is used at the end of the test.

In FIG. 2, n and m are set to 1 (S
201), the test board 2 on which the first optical transmission module 1 that has been adjusted is set is put into the test room 100A (S202). The test mechanism 23 is configured such that the fiber cable 29 and the power supply cable 8
Is connected to the test chamber 100A (S203). In addition, an outside air blocking portion 32 is attached to the cable hole 27,
It becomes a closed state. When the start instruction of the test mechanism 23, the test room number, and the product number of the inserted optical transmission module are received by the keyboard (S204), they are registered in the individual test control unit 33 via the communication cable 21 from the control unit 31. The set temperature in test chamber 100A is indicated according to the temperature condition. The individual test control unit 33 controls the heating mechanism 9, the cooling mechanism 10, and the temperature adjustment mechanism 11, and
Temperature control is started (S205), and the power supply unit 28
Then, power supply to the optical transmission module 1 via the power supply cable 8 is started (S206). Test room 10
When the temperature within 0A reaches the set temperature (S208), the test is started according to the registered test items (S2).
09).

In parallel with the temperature setting and the test in the test chamber 100A, the temperature setting and the test are also performed in the test chambers 100B, 100C, and 100D when the test instruction is received (S210, S219, and S220). As in the case of the first optical transmission module, the optical transmission modules are put into the test chambers 100B, 100C, and 100D (S202), connected to the test mechanism 23 (S203), received the test chamber number / part number, and started the test. Steps S202 to S209 of (S209) are executed. The influence of the external temperature is cut off between the test chambers 100B by the heat insulating unit 12, and since the temperature control in the test chambers uses different mechanisms, the test chambers 100A that perform the test in advance are used. The test can be performed in each test room without any effect on the temperature inside the test room. In accordance with the test room number and the product number received by the keyboard 25, the control unit 31 instructs each test room to the individual test control unit 33 for the temperature condition and the test item corresponding to the product number, and performs the test.

When an error occurs during the test, each individual test control unit 33 detects the error and notifies the control unit 31 of the occurrence of the error and the type of error. Upon receiving the error notification, the control unit 31 displays the number of the test room in which the error has occurred and the type of the error on the display unit 24, and stops only the test in the relevant test room.

When the test of the optical transmission module 1 that has started the first test is completed (S212), the power supply unit 2
The power supply from Step 8 and the temperature control in the individual test control unit 33 are turned off (S213, S214). Since it has no effect on the test environment in the surrounding test room, the test room 100A
The outside air shut-off portion 32 whose inside is sealed is removed from the cable hole 27, and the fiber cable 29 and the power supply cable 8 connecting the optical transmission module 1 and the test mechanism 23 in the test chamber 100A. Is removed (S21
5). The optical transmission module 1 removed from the test chamber 100A is removed from the test board 2 (S216), and supplied to the next step.

According to the present embodiment, the test is sequentially started in each test room from the optical transmission module for which the work in the process before the test is completed, and S202 to S218 are repeated, and the optical test module in which the test is completed is completed. The transmission module sequentially supplies the next process.

Referring to FIGS. 3 to 6, the individual test method according to the embodiment of the present invention will be described in more detail.

FIG. 3 is a plan view showing the configuration of the individual test chamber 35. Each of the individual test chambers 35 is loaded with the optical transmission module 1 as a sample set on the upper surface of the test board 2 in which an electrical short due to contact with another part can be avoided. The bottom of the test chamber 100 is provided with a stand receiver 38 that can fix the test board 2 in a fixed position by being in contact with the four stands 26. The door 22
The door includes a door fixing lock 40 that can be opened and closed when the test board 2 is taken in and out of the test chamber 100, and an opening / closing lever 39 having a mechanism for moving the door fixing lock 40 up and down. Door lock 40 for door lock lock 4
The door 22 is hermetically closed by bringing the door 22 into contact with the door 1. Also,
Between the individual test room 35A and the individual test room 35C, there is provided a heat insulating part 12 for blocking the mutual room temperature and the influence of the heating mechanism 9 and the cooling mechanism 10. The cable hole 27 is a hole for passing the power supply cable 8 used for power supply from the test mechanism 23 shown in FIG. 1 and the fiber 7 for transmitting an optical signal. When the power supply cable 8 and the fiber cable 29 are attached to the cable hole 27, an outside air blocking unit 32 that prevents outside air from entering the test chamber 100 is fitted. Due to the difference between the set temperature instructed by the test mechanism 23 and the temperature in the test chamber 100A detected by the temperature detection unit 13, the temperature adjustment mechanism 11
Then, the motor (not shown) of the cooling mechanism 10 is rotated to adjust the wind direction control plate 37, and the heated and cooled air is blown into the room, and the temperature in the test chamber 100A is set to the set temperature.

The individual test room 35B and the individual test room 35
C, the structure of the individual test chamber 35D has exactly the same structure as that of the individual test chamber 35A.

With the above structure, even when the test of the optical transmission module 1 is performed in the individual test room 35A, another optical transmission module can be put into the individual test room 35B at different timings. In addition, individual test room 35A
It does not affect the test conditions undertaken at. Since the temperature control mechanism 11 is provided in each individual test room,
Even if a plurality of optical transmission modules with different test conditions are supplied, the test can be started at any timing without affecting the mutual test conditions.

FIG. 4 is a plan view showing the structure of the test mechanism 23. The operation panel 60 receives an operation of an operator when turning on and off the power of the test mechanism 23. The power supply unit 28 supplies a plurality of types of power necessary for the operation of the optical transmission module via the power supply cable 8. The optical waveform measuring device 30 determines whether or not the function that the optical transmission module should have is satisfied based on the waveform of the optical signal obtained from the fiber cable 29. The keyboard 25 receives test parameters such as a test temperature, a test time, and an applied voltage value determined for each type of the optical transmission module 1, and receives a test instruction of a specific command at the start and end of the test. Display unit 24 such as a display
Functions as an output unit for displaying a parameter / command received from the keyboard or displaying an error when an error occurs. The control unit 31 communicates test parameters defined for each type of optical transmission module, instructions of the set temperature in the test chamber 100, and monitoring of the test time in accordance with the test instructions received by the operation panel 60, the keyboard 25, and the like. This is performed via the cable 21.

FIG. 5 shows a control unit 31 in the test mechanism 23.
FIG. 4 is a flowchart showing the control contents of FIG.

In FIG. 5, nm indicates the test numbers of the optical transmission module and the test board, respectively, where n is used at the start of the test and m is used at the end of the test.

In FIG. 5, n and m are set to 1 (S
501), the type (product number) of the optical transmission module to be loaded and the serial number written on the surface of the optical transmission module are received via the keyboard 25 for each test room 100. The control unit 31 extracts test parameters such as test temperature, test time, and applied voltage value registered in advance for each type of optical transmission module,
Clarify the test room 100 that is not set to 0 (S5)
02). When the activation instruction of the test mechanism 23 is received, the test mechanism 23 is activated (S503), and the state monitoring of the individual test control unit 33 is started (S504). Individual test control unit 3
3 (S505), the test room 100A (n
= 1) is in the activated state, the test temperature condition corresponding to the optical transmission module 1 to be put into the test room 100A is controlled by the test parameters registered in advance as individual test control data as data for the test room 100A. It is transmitted to the unit 33 via the communication cable 21 (S508). Test room 10
If there is a test room 100 that is not used in order to accept the type of the optical transmission module 1 that is inserted every time, the test room 100 is not activated (S522). Test room 1
Power supply unit 2 for the optical transmission module 1
8 through the power supply cable 8 (S5).
09). The temperature in the test chamber 100A is changed to the individual test control unit 3
In order to start the test when the temperature reaches the test temperature transmitted to the test controller 3, the controller 31 outputs the output of the temperature in the test chamber 100 </ b> A detected by the temperature detector 13 to the individual test controller 3.
3 (S510), and determines whether or not the set test temperature has been reached. When the temperature reaches the set test temperature, the control unit 31 starts the test in the test chamber 100A (S513). When the temperature has not reached, the control unit 31 waits for the temperature to reach (S523), and repeats the processing of S507 to S512. When the test in the test room 100A is completed (S51)
4) The power supply to the optical transmission module 1 in the test room 100A is turned off (S517), and the temperature control in the test room 100A is also turned off (S518).

In parallel with the temperature setting and the test in the test chamber 100A, the temperature setting and the test are also performed in the test chambers 100B, 100C, and 100D when the test instruction is received (S508 to S518).

FIG. 6 is a time chart showing an individual test method according to an embodiment of the present invention and a time chart when a test is performed in a test room in a conventional technique. FIG. 6 shows a case where four modules from module 1 to module 4 are produced.
It is intended for a test process in which tests (test 1 and test 2) are performed under two different conditions. Further, the adjustment operation time, the test temperature arrival waiting time, and all the process times of the test are to be processed in exactly the same time in both the individual test method and the conventional method in the present embodiment. First, in the individual test method according to the present embodiment shown in the upper time chart, when the adjustment work is completed, the optical transmission module 1
A, and the test (1) waits for the temperature to reach,
The test (1) is started at the same time as the temperature reaches, and the test (2) waits for the temperature to reach, and the test proceeds to the test (2). When the optical transmission module 1 is in the state of waiting for the test (2) temperature attainment, the adjustment work of the optical transmission module 2 is completed and, like the optical transmission module 1, is immediately put into the test room 100B. Temperature setting / test has started. The optical transmission module 1 for which the test (2) has been completed is
It is immediately supplied to the next step. Similarly, the test proceeds in parallel with the optical transmission modules 2, 3, and 4. on the other hand,
In the conventional method shown in the time chart below, the supply of the optical transmission module during the test affects the test conditions, so the test process is started until the adjustment work on all four optical transmission modules is completed. Even after being put into the test process, the test waits for the test temperature to be reached, and the test is performed simultaneously for all the optical transmission modules. Comparing the production lead times of the two, there is no difference in the time until the test of all four optical transmission modules is completed, but in the former, the optical transmission module 1, the optical transmission module 2, and the optical transmission module 3 is supplied to the next step at the end of the test, and the work in the next step can be started when the test is completed.

FIG. 7 is a plan view of the test room 100 of the optical transmission module according to the present embodiment. In this embodiment, the optical transmission module is inserted into the test chamber 100.
In order to facilitate removal, the module mounting jig 59
A guide for slidingly setting the (test board 2) is provided on the bottom of the test chamber. The module mounting jig 59 includes a heat insulating plate 57 that is fitted into the opening of the test chamber 100 to seal the test chamber 100 to block the influence of the outside air, and a module set plate 53 to which the optical transmission module is fixedly mounted. And a jig fixing lock 56 that can move up and down in the vertical direction with respect to the mounting surface of the light transmitting module of the module set plate 53, and a handle 58 that has a mechanism for moving the jig fixing lock 56 up and down. The jig guide 55 is provided on the bottom surface in the test chamber 100 and guides the module mounting jig 59 by contacting the lower surface of the module mounting jig 59. The jig fixing lock receiver 54
The module mounting jig 59 is fixed by contacting the jig fixing lock 56 on the opening side of the test chamber 100A.
The inside of OA is sealed. With this structure, it is possible to easily insert and remove the optical transmission module without opening and closing the door by simply sliding the module mounting jig 59 along the jig guide 55, thereby shortening the production lead time. By using a plurality of module mounting jigs 59 for one test room, the optical transmission module 1 can be set on the module mounting jig 59 in advance, so that the production capacity can be improved by reducing the downtime of the apparatus. I can do it.

Next, a second embodiment will be described. FIG.
FIG. 7 shows a plan view of an individual environment test apparatus according to the second embodiment of the present invention. In the present embodiment, FIG.
As shown in (b), the individual environmental test units 43A and 43B
Are mounted, and the caster 46 and the adjuster pad 47 are provided, so that the individual environmental test apparatus can be moved to an arbitrary place.

As shown in FIG. 8A, the configuration of the individual environment test unit 43 can be the same as that of the individual test chamber 35 shown in FIG. The operation panel 14 receives an input from an operator. The test room 100 is loaded with the optical transmission module 1 as a sample set on the test board 2. The door 22 is opened and closed when the optical transmission module 1 is put in and taken out of the test board 2 into and out of the test chamber 100. When the door 22 is closed, the heat insulating section 15 that closes the test chamber 100 and shuts out the influence of the outside air temperature. Have. The temperature detector 13 detects the temperature inside the test chamber 100. When the power supply cable 8 and the fiber 7 are connected, the cable hole 27 is fitted with an outside air shut-off unit 32 for preventing outside air from entering the test chamber 100A. Based on the difference between the set temperature instructed by the test mechanism 23 and the temperature in the test chamber 100A detected by the temperature detection unit 13, the temperature control mechanism 11 rotates the motors of the heating mechanism 9 and the cooling mechanism 10 to change the wind direction. By adjusting the control plate 37, the heated and cooled air is blown into the room, and the temperature in the test room 100 is set to the set temperature. The individual test control unit 33 is instructed from the control unit 31 via the communication cable 21 by the set temperature and test time data in the test room 100. A plurality of individual environmental test units 43 can be stacked on the upper stage.

According to the present embodiment, the individual environmental test unit 43 has the function of a single environmental test device by itself, and a plurality of individual environmental test units 43 can be provided. Further, as shown in FIG. 8 (b), the provision of the casters 46 and the adjuster pads 47 allows the environmental test apparatus to be moved to an arbitrary place. Multiple units can be loaded according to production conditions, saving space.
Energy saving can be achieved.

Next, another embodiment of the temperature control mechanism will be described. FIG. 9 is a plan view illustrating another embodiment of the temperature control mechanism of the individual environment test apparatus of the present invention. FIG. 9 shows a configuration in which a heat pipe (radiation type cooling mechanism) 52 is provided in the cooling mechanism 10 of the test chamber 100. The heat pipe 52 functions when cooling the test chamber 100 and when finely adjusting the temperature inside the test chamber 100. The heat pipe 52 includes a metal pipe 50 in which a small amount of liquid is sealed in a sealed vacuum state, and a fin 51 for radiating heat.
Consists of By providing the heat pipe 52, the temperature difference between the inside and outside of the test
This makes it possible to cool the inside of the chamber 0 and finely adjust the temperature inside the test chamber 100A, thereby realizing a compact, space-saving and low-cost apparatus.

[0039]

According to the invention described above, environmental tests of a plurality of modules can be performed under different test conditions. Also,
Modules can be loaded during aging or testing without affecting test conditions. Therefore, the production lead time can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of an individual test apparatus according to an embodiment of the present invention.

FIG. 2 is an overall flowchart of an individual test apparatus according to an embodiment of the present invention.

FIG. 3 is a plan view showing the configuration of an individual test chamber according to an embodiment of the present invention.

FIG. 4 is a plan view showing a configuration of a test mechanism according to an embodiment of the present invention.

FIG. 5 is a flowchart showing control contents of a test mechanism according to an embodiment of the present invention.

FIG. 6 is a time chart when a test is performed by the individual test method according to the embodiment of the present invention and a conventional method.

FIG. 7 is a plan view showing a method for loading and unloading the optical transmission module according to the embodiment of the present invention.

FIG. 8 is a plan view showing the configuration of an individual test chamber according to the second embodiment.

FIG. 9 is a plan view showing the configuration of an individual test chamber according to the third embodiment.

FIG. 10 is an explanatory diagram showing a temperature condition and a test item corresponding to a product number in the embodiment.

FIG. 11 is an explanatory diagram illustrating a configuration of a control signal according to the embodiment.

[Explanation of symbols]

1 ... Module for optical transmission, 2 ... Test board, 100A
B / C / D: Test room, 7: Fiber, 8: Power supply cable, 9: Heating mechanism, 10: Cooling mechanism, 11: Temperature control mechanism, 12: Heat insulation unit, 13: Temperature detection unit, 14: Operation Panel, 15: Heat insulation unit, 16: Fan, 21: Communication cable, 22A, B: Door, 23: Test mechanism, 24: Display unit, 25: Keyboard, 26: Stand, 27: Cable hole, 28: Power supply unit , 29 ... fiber cable,
Reference numeral 30 denotes an optical waveform measuring instrument, 31 denotes a control unit, 32 denotes an outside air cutoff unit, 33 denotes an individual test control unit, 35 denotes an individual test room, and 36 ...
Individual test chamber 100B, 37: wind direction control plate, 38: stand receiver, 39: open / close lever, 40: door lock, 4
DESCRIPTION OF SYMBOLS 1 ... Lock receiver for door fixing, 43A / B ... Individual environmental test unit, 45 ... Stand, 46 ... Caster, 47 ... Adjuster pad, 50 ... Pipe, 51 ... Fin, 52 ... Heat dissipation cooling mechanism, 53 ... Module set plate 54, a jig fixing lock receiver, 55, a jig guide, 56, a jig fixing lock, 57, a heat insulating plate, 58, a handle, 59, a module mounting jig, 60, an operation panel.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Katsumi Uchida 216 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Communications Division, Hitachi, Ltd. (72) Hiroshi Matahira 216 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Hitachi, Ltd. Communication Division (72) Inventor Yasushi Ideguchi 216 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture F-term in Hitachi Division Communications Division 2G132 AA00 AB14 AE14 AE16 AE22 AE24 AE27 AL09 AL25

Claims (5)

[Claims] 1. An individual environmental test apparatus for performing an environmental test of a plurality of modules, wherein an outer wall is formed by a heat insulating member, and a plurality of test sections to which the modules are mounted, and each of the plurality of test sections are mounted. A power supply voltage supply unit that applies a voltage to the module, a control unit that controls the power supply voltage supply unit, and controls a test of the module mounted on each of the plurality of test units, and the plurality of tests. Receiving means for receiving a test instruction of the module in each of the sections, each of the plurality of test sections, heating means for heating the inside of the test section, cooling means for cooling the inside of the test section, Temperature control means for controlling the temperature inside the test section by adjusting the heating means and the cooling means, and wherein the control section controls the test received by the receiving section. Display according to, for each of said plurality of test portions, said temperature regulating means to control the individual environmental testing apparatus which is characterized in that the control of the test. 2. The test apparatus according to claim 1, wherein the control unit performs error detection in a test of each of the modules mounted on each of the plurality of test units, and performs the error detection. An individual environment test apparatus, comprising: output means for stopping a test of the unit and outputting the error detection to the outside when the error detection is performed. 3. The individual environment test apparatus according to claim 1, further comprising storage means for storing a test procedure to be performed by said control unit for each type of said module, wherein said receiving means is provided for said plurality of test units. Receiving an instruction on the type of the module in each of the modules, wherein the control unit performs a test in accordance with a test procedure stored in the storage unit according to the type of the module received by the receiving unit. Testing equipment. 4. A housing constituted by a heat insulating member,
A module test method in an individual environment test device including a plurality of test units to which a module is attached, wherein a test instruction for the module is received for each of the plurality of test units, and the module is attached to each of the plurality of test units. Applying a voltage to each of the modules, adjusting an internal temperature of each of the plurality of test units, and performing a test of the module mounted on the test unit for each of the plurality of test units. . 5. An optical transmission module test apparatus for testing an optical transmission module for transmitting and receiving an optical signal via an optical fiber, comprising: a plurality of tests in which an outer wall is formed by a heat insulating member and the optical transmission module is mounted. Unit, a power supply voltage supply unit that applies a voltage to the optical transmission module mounted on each of the plurality of test units, and controls the power supply voltage supply unit, and is mounted on each of the plurality of test units. A control unit that controls each test of the optical transmission module, and a receiving unit that receives a test instruction of the optical transmission module in each of the plurality of test units, each of the plurality of test units, Heating means for heating the inside of the test section, cooling means for cooling the inside of the test section, and adjusting the heating means and the cooling means to adjust the inside of the test section. Temperature control means for performing temperature control, wherein the control unit controls the temperature control means for each of the plurality of test units according to the test instruction received by the receiving means, and controls the test. An optical transmission module test apparatus characterized by the following: