JP6876730B2 - Data signal transmission device and data signal transmission method - Google Patents

Description

The present invention relates to a data signal transmission device and a data signal transmission method for transmitting a high-speed digital signal in a plurality of lanes.

The communication volume of Data Center and Network is steadily increasing, and the transmission speed required for physical layer devices and modules is also increasing in speed and capacity.

For example, in order to support high-speed and large-capacity communication such as the IEEE 400G standard, a device for transmitting digital signals in multiple lanes is required, and by increasing the symbol rate, the time axis direction per symbol is required. The margin is narrow, making it difficult to transmit data signals without causing timing errors.

By the way, conventionally, in the case of a modular data transmission device in which a plurality of high-speed digital signal transmission modules are built in one housing, the phase relationship between the parallel data signal and other data signals inside the transmission module is kept optimal. Therefore, a variable delay element is used. As the variable delay element, for example, in addition to the variable delay device disclosed in Patent Document 1 below, an electronic delay whose delay amount is controlled by voltage control or bit control of a control terminal is known.

Japanese Unexamined Patent Publication No. 11-163608

However, the electronic delay as a variable delay element generally has a temperature characteristic, and the propagation delay (propagation delay) changes depending on the temperature. Therefore, there is a problem that the phase relationship between the optimized data signal and other data signals is deviated due to the temperature change inside the transmission module, which causes a timing error.

Further, the temperature inside the transmission module in the data transmission device also changes depending on the ambient temperature of the device, and the temperature deviates from the optimum point. Further, there is a problem that the air flow in the apparatus changes depending on the position of the slot in which the transmission module is mounted, causing a temperature difference inside the transmission module, and similarly, the deviation from the optimum point occurs.

Therefore, the present invention has been made in view of the above problems, and provides a data signal transmission device and a data signal transmission method capable of maintaining the phase relationship between data signals inside the transmission module within an allowable range. It is intended to be provided.

In order to achieve the above object, the data signal transmission device according to the present invention has a plurality of slots 2 in the device main body 1a, and is selectively mounted in the slots by arbitrarily combining the same or different types of transmission modules 3. a in transmission module or et plurality of lanes are aligned within an acceptable range the phase data signal transmission apparatus 1 for transmitting data signals that,
An operation unit 4 to be operated when performing settings including amplitude setting, transmission pattern setting, symbol rate setting, and transmission emphasis setting of the transmission module mounted in the slot of the apparatus main body.
The correction coefficient information for each transmission module for correcting the delay amount of the variable delay element 9 of the transmission module mounted in the slot of the apparatus main body is stored, and the amplitude of the pattern signal, the number of bits and the bit string of the data pattern, and the pattern are stored. A storage unit 6 that stores setting information for each transmission module, including timing for outputting a signal, and a storage unit 6.
The main body temperature measuring unit 7 for measuring the ambient temperature of the main body of the device,
The module temperature measuring unit 8 for measuring the internal temperature of the transmission module mounted in the slot, and
The module information acquisition unit 10a for acquiring the module information of the transmission module installed in the slot, and
And the temperature correction processing unit 10c for calculating a correction value of the variable delay element of the transmission module installed in the slot based on the correction coefficient information for each said storage unit to said stored transmission module,
A variable delay control unit 10d that corrects the delay amount of the variable delay element of the transmission module mounted in the slot based on the correction value is provided .
When at least one of the ambient temperature of the apparatus main body and the internal temperature of each transmission module exceeds a preset threshold temperature, the variable delay of the transmission module mounted in the slot of the apparatus main body is based on the correction value. Correct the amount of delay of the element and
When the transmission module transmits a data signal, the transmission of the data signal is prioritized without executing the correction control of the delay amount of the variable delay element of each transmission module .

The data signal transmission device according to the present invention has a plurality of slots 2 in the device main body 1a, and a plurality of lanes from a transmission module selectively mounted in the slots by arbitrarily combining the same or different types of transmission modules 3. A data signal transmission device 1 for transmitting a data signal with the phases aligned within an allowable range.
An operation unit 4 to be operated when performing settings including amplitude setting, transmission pattern setting, symbol rate setting, and transmission emphasis setting of the transmission module mounted in the slot of the apparatus main body.
The correction coefficient information for each transmission module for correcting the delay amount of the variable delay element 9 of the transmission module mounted in the slot of the apparatus main body is stored, and the amplitude of the pattern signal, the number of bits and the bit string of the data pattern, and the pattern are stored. A storage unit 6 that stores setting information for each transmission module, including timing for outputting a signal, and a storage unit 6.
The main body temperature measuring unit 7 for measuring the ambient temperature of the main body of the device,
The module temperature measuring unit 8 for measuring the internal temperature of the transmission module mounted in the slot, and
The module information acquisition unit 10a for acquiring the module information of the transmission module installed in the slot, and
A temperature correction processing unit 10c that calculates a correction value of the variable delay element of the transmission module mounted in the slot based on the correction coefficient information for each transmission module stored in the storage unit.
A variable delay control unit 10d that corrects the delay amount of the variable delay element of the transmission module mounted in the slot based on the correction value is provided.
When exceeding the threshold temperature at least one of the internal temperature reaches a preset for each of the transmission module and the ambient temperature of the device the body, and displays the notification screen 5a which notifies, on the notification screen the delay amount of the variable delay element of the transmission module mounted on the slot of the device main body based on a correction value by the operation of the correction instruction button 11,
When the transmission module transmits a data signal, the transmission of the data signal is prioritized without executing the correction control of the delay amount of the variable delay element of each transmission module .

Data signal transmitting method of the present invention, the apparatus body 1a to have a plurality of slots 2, the same or different types of transmission modules or et plurality transmission module 3 in combination optionally be selectively mounted on said slot It is a data signal transmission method that transmits a data signal by aligning the phases within an allowable range in the lane.
A step of operating the operation unit 4 when performing settings including amplitude setting, transmission pattern setting, symbol rate setting, and transmission emphasis setting of the transmission module mounted in the slot of the apparatus main body.
The correction coefficient information for each transmission module for correcting the delay amount of the variable delay element 9 of the transmission module mounted in the slot of the apparatus main body is stored, and the amplitude of the pattern signal, the number of bits and the bit string of the data pattern, and the pattern are stored. A step of storing the setting information for each transmission module including the timing of outputting a signal in the storage unit 6 and
The step of measuring the ambient temperature of the device body and
The step of measuring the internal temperature of the transmission module installed in the slot, and
The step of acquiring the module information of the transmission module installed in the slot, and
Calculating a correction value of the variable delay element of the transmission module installed in the slot based on the correction coefficient information for each said storage unit to said stored transmission module,
And correcting on the basis of the delay amount of the variable delay elements of the transmission module installed in the slot of the device main body to said correction value,
When at least one of the ambient temperature of the apparatus main body and the internal temperature of each transmission module exceeds a preset threshold temperature, the variable delay of the transmission module mounted in the slot of the apparatus main body is based on the correction value. Steps to correct the element delay amount and
When the transmission module transmits a data signal, the transmission module includes a step of giving priority to the transmission of the data signal without executing the correction control of the delay amount of the variable delay element of each transmission module.

The data signal transmission method according to the present invention has a plurality of slots 2 in the apparatus main body 1a, and a plurality of lanes from a transmission module selectively mounted in the slots by arbitrarily combining the same or different types of transmission modules 3. A data signal transmission method in which a data signal is transmitted with the phases aligned within an allowable range.
A step of operating the operation unit 4 when performing settings including amplitude setting, transmission pattern setting, symbol rate setting, and transmission emphasis setting of the transmission module mounted in the slot of the apparatus main body.
The correction coefficient information for each transmission module for correcting the delay amount of the variable delay element 9 of the transmission module mounted in the slot of the apparatus main body is stored, and the amplitude of the pattern signal, the number of bits and the bit string of the data pattern, and the pattern are stored. A step of storing the setting information for each transmission module including the timing of outputting a signal in the storage unit 6 and
The step of measuring the ambient temperature of the device body and
The step of measuring the internal temperature of the transmission module installed in the slot, and
The step of acquiring the module information of the transmission module installed in the slot, and
A step of calculating the correction value of the variable delay element of the transmission module mounted in the slot based on the correction coefficient information for each transmission module stored in the storage unit, and
A step of correcting the delay amount of the variable delay element of the transmission module mounted in the slot of the apparatus main body based on the correction value, and
When exceeding the threshold temperature at least one of the internal temperature reaches a preset for each of the transmission module and the ambient temperature of the device the body, displaying a notification screen 5a to notify,
And correcting the delay amount of the variable delay element of the transmission module mounted on the slot of the device main body on the basis of the correction value by an operation of the correction instruction button 11 on the notification screen,
When the transmission module transmits a data signal, the transmission module includes a step of giving priority to the transmission of the data signal without executing the correction control of the delay amount of the variable delay element of each transmission module .

According to the present invention, the phase relationship between the parallel data signal and other data signals inside the transmission module can be maintained within an allowable range, and the symbol rate can be increased.

It is a block diagram which shows the schematic structure of the main part of the data signal transmission apparatus which concerns on this invention. It is a perspective view which shows the appearance of the data signal transmission apparatus which concerns on this invention. It is a figure which shows the notification example when there is a temperature change exceeding a threshold value after correction of the delay amount of a variable delay element in this invention. It is a flowchart which shows the processing procedure in the case of controlling the delay amount of the variable delay element in this invention.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the attached drawings.

As shown in FIG. 2, the data signal transmission device 1 of the present embodiment transmits a plurality of data signals to a plurality of slots 2 provided in the openings 1b of the side surface portion of the device main body 1a having a rectangular housing. It is a modular device that can freely add, remove, and rearrange modules 3 and transmit data signals (high-speed digital signals) with the phases aligned within an allowable range in a plurality of lanes.

That is, in the data signal transmission device 1, a plurality of transmission modules 3 are built in the device main body 1a, and the same or different types of transmission modules 3 can be arbitrarily combined and mounted in the slot 2 of the device main body 1a. The mounting position of is indefinite.

The transmission module 3 is electrically connected to a control circuit board (not shown) on which a storage unit and a control unit are mounted in a state of being mounted in an arbitrary slot 2. Further, the operation unit 4 and the display unit 5 are also connected to the control circuit board by wiring.

As shown in FIG. 1, the data signal transmission device 1 of the present embodiment has an operation unit 4, a display unit 5, a storage unit 6, a main body temperature measurement unit 7, a module temperature measurement unit 8, a variable delay element 9, and a control unit. 10 is provided, and has a function of correcting the temperature characteristics of the variable delay element 9 of each transmission module 3.

The operation unit 4 includes, for example, a pointing device such as a mouse or a touch screen for operating a pointer or an icon on the display screen of the display unit 5, keys, switches, buttons, etc. provided on the device main body 1a, and a slot 2 of the device main body 1a. It is operated when setting each transmission module 3 mounted on the mouse (amplitude setting, transmission pattern setting, symbol rate (frequency) setting, transmission emphasis setting, etc.).

The display unit 5 is composed of, for example, a liquid crystal display mounted on the front surface of the apparatus main body 1a. The display unit 5 displays the setting screen of the transmission module 3 on the display screen under the control of the control unit 10 based on the operation of the operation unit 4.

Further, the display unit 5 displays the notification screen 5a shown in FIG. 3 under the control of the control unit 10. On the notification screen 5a, a correction instruction button (denoted as Calibration in FIG. 4) 11 including soft keys for instructing execution of the correction control of FIG. 4 to be described later is displayed.

The correction instruction button 11 has a rectangular notification lamp 11a. In the notification lamp 11a, the temperature difference between the ambient temperature of the apparatus main body 1a and the internal temperature of each transmission module 3 from the time when the correction control of the delay amount of the variable delay element 9 of each transmission module 3 described later is performed is preset. When the threshold value is exceeded, the light is turned on under the control of the display control unit 10e, and is turned off when the user presses the correction instruction button 11 to instruct the execution of the correction control of FIG. 4 described later.

The storage unit 6 stores correction coefficient information for each transmission module 3 for correcting the delay amount of the variable delay element 9 of the transmission module 3 mounted in the slot 2. Further, the storage unit 6 stores setting information for each transmission module 3, such as the amplitude of the pattern signal, the number of bits and bit strings of the data pattern, and the timing of outputting the pattern signal.

The main body temperature measuring unit 7 is composed of temperature sensors such as a thermistor and a thermocouple, and measures the ambient temperature of the device main body 1a.

The module temperature measuring unit 8 is provided for each transmission module 3 and, like the main body temperature measuring object 13, is composed of temperature sensors such as a thermistor and a thermocouple, and measures the internal temperature of the transmission module 3.

The variable delay element 9 is composed of an electronic delay whose delay amount is variably controlled by voltage control by the control unit 10 or bit control to the control terminal, and is provided for each lane of each transmission module 3.

The control unit 10 comprehensively controls the entire device when transmitting a desired data signal (high-speed digital signal) in a plurality of lanes, and is a module information acquisition unit 10a, a temperature monitoring unit 10b, a temperature correction processing unit 10c, and a variable delay. It includes a control unit 10d and a display control unit 10e.

The module information acquisition unit 10a acquires information (for example, model number, etc.) for identifying the transmission module 3 mounted in the slot 2 of the apparatus main body 1a as module information for each slot 2.

The temperature monitoring unit 10b acquires the ambient temperature of the device main body 1a measured by the main body temperature measuring unit 7 and the internal temperature of each transmission module 3 measured by the module temperature measuring unit 8, and obtains the ambient temperature of the device main body 1a and the internal temperature of each transmission module 3. The internal temperature of each transmission module 3 is monitored.

The temperature correction processing unit 10c includes module information acquired by the module information acquisition unit 10a, temperature monitoring results monitored by the temperature monitoring unit 10b (ambient temperature of the device main body 1a, internal temperature of each transmission module 3), and a storage unit. The correction value of the variable delay element 9 for each transmission module 3 is calculated based on the correction coefficient information for each transmission module 3 stored in 6.

The variable delay control unit 10d controls the delay amount of the variable delay element 9 of the transmission module 3 mounted in the slot 2 for each transmission module 3 based on the correction value calculated by the temperature correction processing unit 10c.

When the display control unit 10e corrects the variable delay element 9 of each transmission module 3 from the temperature correction processing unit 10c via the variable delay control unit 10d, the display control unit 10e measures the device main body 1a by the main body temperature measurement unit 7. When at least one of the ambient temperature and the internal temperature of each transmission module 3 measured by the module temperature measuring unit 8 exceeds a preset threshold value, the display unit 5 displays the notification screen 5a of FIG. To control.

Next, the operation when the delay amount of the variable delay element 9 is corrected and controlled in the data signal transmission device 1 configured as described above will be described with reference to FIG.

First, the module information acquisition unit 10a of the control unit 10 acquires the module information (model number of each transmission module 3) of each transmission module 3 mounted in the slot 2 of the device main body 1a (ST1).

Further, the temperature monitoring unit 10b acquires the ambient temperature of the device main body 1a measured by the main body temperature measuring unit 7 and the internal temperature of each transmission module 3 measured by the module temperature measuring unit 8 (ST2).

Subsequently, the temperature correction processing unit 10c has the module information acquired by the module information acquisition unit 10a and the temperature monitoring result monitored by the temperature monitoring unit 10b (ambient temperature of the device main body 1a, internal temperature of each transmission module 3). , The correction value of the variable delay element 9 for each transmission module 3 is calculated from the correction coefficient information for each transmission module 3 stored in the storage unit 6 (ST3).

Then, the variable delay control unit 10d acquires the correction value calculated by the temperature correction processing unit 10c, and controls the delay amount of the variable delay element 9 of each transmission module 3 based on the acquired correction value (ST4).

After the delay amount of the variable delay element 9 of each transmission module 3 described above is corrected, the temperature monitoring unit 10b monitors changes in the ambient temperature of the apparatus main body 1a and the internal temperature of each transmission module 3. Then, when the temperature difference from the time of correction exceeds a preset threshold value, the notification screen 5a of FIG. 3 is displayed on the display unit 5 under the control of the display control unit 10e, and the user is notified to that effect. To do.

Then, when the user presses the correction instruction button 11 on the notification screen 5a of FIG. 3, the processes (ST1 to 4) of FIG. 4 are executed to control the delay amount of the variable delay element 9 of each transmission module 3, and the delay amount is controlled. The phase between the data signals at the current temperature is adjusted to the phase relationship within the allowable range (for example, 0.25 UI).

Even if the user does not press the correction instruction button 11 on the notification screen 5a of FIG. 3, if the temperature difference from the time of correction exceeds a preset threshold value, each transmission module of FIG. 4 The delay amount correction control of the variable delay element 9 of 3 may be executed to automatically adjust the phase between the data signals to the phase relationship of the allowable range (for example, 0.25 UI).

When the transmission module 3 is transmitting the data signal, the transmission of the data signal is prioritized without executing the correction control of the delay amount of the variable delay element 9 of each transmission module 3 of FIG.

Even if the internal temperature of the transmission module 3 changes due to the ambient temperature of the device or the slot configuration by the correction control of the delay amount of the variable delay element 9 described above, the phase relationship between the data signal and other data signals is within the permissible range. It is possible to maintain and transmit a high-speed data signal without causing a timing error.

As described above, according to the present embodiment, the phase of the parallel data signal and the other data signals inside the transmission module 3 is provided by providing the function of correcting the temperature characteristic of the variable delay element 9 of each transmission module 3. It is possible to keep the relationship within the permissible range, and it is possible to cope with the increase in the symbol rate.

Although the best form of the data signal transmission device and the data signal transmission method according to the present invention has been described above, the present invention is not limited by the description and drawings in this form. That is, it goes without saying that all other forms, examples, operational techniques, and the like made by those skilled in the art based on this form are included in the scope of the present invention.

1 Data signal transmission device 1a Device main unit 1b Opening 2 Slot 3 Transmission module 4 Operation unit 5 Display unit 5a Notification screen 6 Storage unit 7 Main unit temperature measurement unit 8 Module temperature measurement unit 9 Variable delay element 10 Control unit 10a Module information acquisition unit 10b Temperature monitoring unit 10c Temperature correction processing unit 10d Variable delay control unit 10e Display control unit 11 Correction instruction button 11a Notification lamp

Claims (4)

Device has a body (1a) into a plurality of slots (2), the same or different types of transmission module phase in transmission module or et plurality lanes (3) any combination of be selectively mounted on said slot A data signal transmission device (1) that transmits data signals within an allowable range.
An operation unit (4) to be operated when performing settings including amplitude setting, transmission pattern setting, symbol rate setting, and transmission emphasis setting of the transmission module mounted in the slot of the apparatus main body.
The correction coefficient information for each transmission module for correcting the delay amount of the variable delay element (9) of the transmission module mounted in the slot of the main body of the apparatus is stored, and the amplitude of the pattern signal, the number of bits of the data pattern, and the bit string are stored. , A storage unit (6) that stores setting information for each transmission module, including timing for outputting a pattern signal, and
The main body temperature measuring unit (7) for measuring the ambient temperature of the main body of the device, and
A module temperature measuring unit (8) that measures the internal temperature of the transmission module mounted in the slot, and
A module information acquisition unit (10a) for acquiring module information of a transmission module mounted in the slot, and
Temperature correction processing unit for calculating a correction value of the variable delay element of the transmission module installed in the slot based on the correction coefficient information for each said storage unit to said stored transmission module and (10c),
A variable delay control unit (10d) that corrects the delay amount of the variable delay element of the transmission module mounted in the slot based on the correction value is provided .
When at least one of the ambient temperature of the apparatus main body and the internal temperature of each transmission module exceeds a preset threshold temperature, the variable delay of the transmission module mounted in the slot of the apparatus main body is based on the correction value. Correct the amount of delay of the element and
When the transmission module is transmitting a data signal, the data signal transmission device is characterized in that the transmission of the data signal is prioritized without executing the correction control of the delay amount of the variable delay element of each transmission module. The apparatus main body (1a) has a plurality of slots (2), and the same or different types of transmission modules (3) can be arbitrarily combined to allow a phase range in a plurality of lanes from a transmission module selectively mounted in the slots. It is a data signal transmission device (1) that transmits data signals by aligning the inside.
An operation unit (4) to be operated when performing settings including amplitude setting, transmission pattern setting, symbol rate setting, and transmission emphasis setting of the transmission module mounted in the slot of the apparatus main body.
The correction coefficient information for each transmission module for correcting the delay amount of the variable delay element (9) of the transmission module mounted in the slot of the main body of the apparatus is stored, and the amplitude of the pattern signal, the number of bits of the data pattern, and the bit string are stored. , A storage unit (6) that stores setting information for each transmission module, including timing for outputting a pattern signal, and
The main body temperature measuring unit (7) for measuring the ambient temperature of the main body of the device, and
A module temperature measuring unit (8) that measures the internal temperature of the transmission module mounted in the slot, and
A module information acquisition unit (10a) for acquiring module information of a transmission module mounted in the slot, and
A temperature correction processing unit (10c) that calculates the correction value of the variable delay element of the transmission module mounted in the slot based on the correction coefficient information for each transmission module stored in the storage unit.
A variable delay control unit (10d) that corrects the delay amount of the variable delay element of the transmission module mounted in the slot based on the correction value is provided.
When exceeding the threshold temperature at least one of the internal temperature reaches a preset for each of the transmission module and the ambient temperature of the device the body, and displays a notification screen (5a) that notifies the notification screen correcting the delay amount of the variable delay element of the transmission module mounted on the slot of the device main body on the basis of the correction value by an operation of the correction instruction button (11) above,
When said transmission module is transmitting data signals, the variable delay element characteristics and to Lud data signal to prioritize transmission of the data signal without performing a delay amount correction control for the transmission of each transmission module apparatus. Device has a body (1a) into a plurality of slots (2), the same or different types of transmission module phase in transmission module or et plurality lanes (3) any combination of be selectively mounted on said slot It is a data signal transmission method that transmits data signals within the permissible range.
A step of operating the operation unit (4) when performing settings including amplitude setting, transmission pattern setting, symbol rate setting, and transmission emphasis setting of the transmission module mounted in the slot of the apparatus main body.
The correction coefficient information for each transmission module for correcting the delay amount of the variable delay element (9) of the transmission module mounted in the slot of the main body of the apparatus is stored, and the amplitude of the pattern signal, the number of bits of the data pattern, and the bit string are stored. , A step of storing the setting information for each transmission module including the timing of outputting the pattern signal in the storage unit (6), and
The step of measuring the ambient temperature of the device body and
The step of measuring the internal temperature of the transmission module installed in the slot, and
The step of acquiring the module information of the transmission module installed in the slot, and
Calculating a correction value of the variable delay element of the transmission module installed in the slot based on the correction coefficient information for each said storage unit to said stored transmission module,
And correcting on the basis of the delay amount of the variable delay elements of the transmission module installed in the slot of the device main body to said correction value,
When at least one of the ambient temperature of the apparatus main body and the internal temperature of each transmission module exceeds a preset threshold temperature, the variable delay of the transmission module mounted in the slot of the apparatus main body is based on the correction value. Steps to correct the element delay amount and
When the transmission module transmits a data signal, the data signal includes a step of prioritizing the transmission of the data signal without executing the correction control of the delay amount of the variable delay element of each transmission module. Transmission method. The apparatus main body (1a) has a plurality of slots (2), and the same or different types of transmission modules (3) can be arbitrarily combined to allow a phase range in a plurality of lanes from a transmission module selectively mounted in the slots. It is a data signal transmission method that transmits data signals by aligning the inside.
A step of operating the operation unit (4) when performing settings including amplitude setting, transmission pattern setting, symbol rate setting, and transmission emphasis setting of the transmission module mounted in the slot of the apparatus main body.
The correction coefficient information for each transmission module for correcting the delay amount of the variable delay element (9) of the transmission module mounted in the slot of the main body of the apparatus is stored, and the amplitude of the pattern signal, the number of bits of the data pattern, and the bit string are stored. , A step of storing the setting information for each transmission module including the timing of outputting the pattern signal in the storage unit (6), and
The step of measuring the ambient temperature of the device body and
The step of measuring the internal temperature of the transmission module installed in the slot, and
The step of acquiring the module information of the transmission module installed in the slot, and
A step of calculating the correction value of the variable delay element of the transmission module mounted in the slot based on the correction coefficient information for each transmission module stored in the storage unit, and
A step of correcting the delay amount of the variable delay element of the transmission module mounted in the slot of the apparatus main body based on the correction value, and
When exceeding the threshold temperature at least one of the internal temperature reaches a preset for each of the transmission module and the ambient temperature of the device the body, displaying a notification screen (5a) for notifying to that effect,
And correcting the delay amount of the variable delay element of the transmission module mounted on the slot of the device main body on the basis of the correction value by an operation of the correction instruction button (11) on the notification screen,
When said transmission module is transmitting data signals, characteristics and to Lud to include a priority step the transmission of data signals without performing a delay amount of the correction control of the variable delay elements for each transmission module Data signal transmission method.

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