Signal waveform setting device

Abstract

To solve such a problem that quality improvement and cost reduction cannot be achieved due to increase in time cost and variations of hardware.SOLUTION: A signal waveform setting device 110 performs setting of a signal waveform in a circuit board 100 including: a transmission unit 101 which transmits an ultra-high-speed signal; a reception unit 103 which receives the ultra-high-speed signal; and an adjustment unit 102 which is arranged between the transmission unit and the reception unit to adjust a waveform of the ultra-high-speed signal. The signal waveform setting device comprises: a first function 111 which sets a characteristic of the ultra-high-speed signal transmitted from the transmission unit on the basis of a reception signal by the reception unit; a second function 112 which sets a characteristic of the ultra-high-speed signal received on the reception side of the adjustment unit on the basis of the reception signal by the reception unit; a third function 113 which sets a characteristic of the ultra-high-speed signal transmitted from the transmission side of the adjustment unit on the basis of the reception signal by the reception unit; and a fourth function 114 which sets a characteristic of the ultra-high-speed signal received by the reception unit on basis of the reception signal by the reception unit.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a signal waveform setting method, a signal waveform setting device, and a program. [Background technology]

[0002] Internet traffic is steadily increasing due to the spread of portable information processing devices such as smartphones and tablets, and the development of cloud services and IoT (Internet of Things) technologies. At the same time, communication carriers are urgently required to reduce communication costs, and there is a need to apply even faster signal transmission technologies that can improve signal accommodation efficiency.

[0003] In particular, signal wiring technology and substrate selection are major challenges for communication equipment where the baud rate of signals wired within a circuit board is 10 Gbps or higher. Therefore, rather than directly connecting the transmitting and receiving devices, it is necessary to optimize the electrical waveform of ultra-high-speed signals between the transmitting and receiving devices via a device with waveform adjustment functionality, such as a signal conditioner, between the devices. To optimize the electrical waveform, it is necessary to set the amplitude / emphasis of the transmitting device, the amplitude / emphasis of the transmitting side of the device with waveform adjustment functionality, such as a signal conditioner, the equalizer on the receiving side, and the equalizer of the receiving device as parameters for each device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-137799 Summary of the Invention [Problem to be solved by the invention]

[0005] The above-mentioned settings are set as fixed values ​​for each device, based on optimal settings determined through evaluation of the actual device and waveform simulation results. Therefore, when redesigning the circuit board or changing the device, the optimal settings must be determined again and set as fixed values, resulting in increased time and cost. Furthermore, little consideration is given to individual variations due to differences in the transmit / receive characteristics of each device, PWB (Printed Wiring Board) wiring characteristics, and device material characteristics, resulting in the problem of being unable to improve quality or reduce costs due to such variations.

[0006] Here, Patent Document 1 describes changing transmission and reception parameters in electronic devices by monitoring the signal reception state. However, Patent Document 1 does not consider changing the transmission and reception parameters of devices with the waveform adjustment function described above. As a result, when using devices that require signal waveform adjustment, problems still arise, such as increased time and cost for adjusting device settings, and inability to improve quality or reduce costs due to hardware variations.

[0007] Therefore, an object of the present invention is to provide a signal waveform setting method that can solve the above-mentioned problems of increased time and cost, and the inability to improve quality and reduce costs due to variations in hardware. [Means for solving the problem]

[0008] A signal waveform setting method according to one aspect of the present invention includes: A signal waveform setting method for a circuit board including a transmitter that transmits an ultrahigh-speed signal, a receiver that receives the ultrahigh-speed signal, and an adjuster that is disposed between the transmitter and receiver and adjusts the waveform of the ultrahigh-speed signal, a first step of setting characteristics of an ultra-high speed signal transmitted from the transmitting unit based on a signal received by the receiving unit; a second step of setting the characteristics of the ultra-high speed signal received by the receiving side of the adjustment unit based on the signal received by the receiving unit; a third step of setting the characteristics of the ultra-high speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit; a fourth step of setting characteristics of the ultra-high speed signal received by the receiving unit based on the signal received by the receiving unit; in any order, The structure is as follows.

[0009] Furthermore, a signal waveform setting device according to one aspect of the present invention includes: A signal waveform setting device for setting a signal waveform on a circuit board including a transmitter for transmitting an ultrahigh-speed signal, a receiver for receiving the ultrahigh-speed signal, and an adjuster disposed between the transmitter and receiver for adjusting the waveform of the ultrahigh-speed signal, a first function of setting the characteristics of the ultra-high speed signal transmitted from the transmitting unit based on the signal received by the receiving unit; a second function of setting the characteristics of the ultra-high speed signal received at the receiving side of the adjustment unit based on the signal received by the receiving unit; a third function of setting the characteristics of the ultra-high speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit; a fourth function of setting characteristics of the ultra-high speed signal received by the receiver based on the signal received by the receiver; Equipped with The structure is as follows.

[0010] Furthermore, a circuit board according to one aspect of the present invention includes: A circuit board including a transmitter that transmits an ultrahigh-speed signal, a receiver that receives the ultrahigh-speed signal, an adjuster that is disposed between the transmitter and receiver and adjusts the waveform of the ultrahigh-speed signal, and a signal waveform setting unit that sets the signal waveform, The signal waveform setting unit a first function of setting the characteristics of the ultra-high speed signal transmitted from the transmitting unit based on the signal received by the receiving unit; a second function of setting the characteristics of the ultra-high speed signal received at the receiving side of the adjustment unit based on the signal received by the receiving unit; a third function of setting the characteristics of the ultra-high speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit; a fourth function of setting characteristics of the ultra-high speed signal received by the receiver based on the signal received by the receiver; Equipped with The structure is as follows.

[0011] Furthermore, a program according to one aspect of the present invention includes: A computing device for setting a signal waveform on a circuit board including a transmitting unit for transmitting an ultrahigh-speed signal, a receiving unit for receiving the ultrahigh-speed signal, and an adjusting unit disposed between the transmitting unit and the receiving unit for adjusting the waveform of the ultrahigh-speed signal, a first function of setting the characteristics of the ultra-high speed signal transmitted from the transmitting unit based on the signal received by the receiving unit; a second function of setting the characteristics of the ultra-high speed signal received at the receiving side of the adjustment unit based on the signal received by the receiving unit; a third function of setting the characteristics of the ultra-high speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit; a fourth function of setting characteristics of the ultra-high speed signal received by the receiver based on the signal received by the receiver; To realize The structure is as follows. [Effects of the Invention]

[0012] With the above-described configuration, the present invention can reduce the time and cost required to optimize signal waveforms in a circuit board that transmits and receives ultra-high speed signals, thereby improving quality and reducing costs. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a block diagram showing a configuration of a circuit board according to a first embodiment of the present invention. [Figure 2] 2 is a flowchart showing the operation of the circuit board disclosed in FIG. 1. [Figure 3]FIG. 10 is a block diagram showing the configuration of a circuit board according to a second embodiment of the present invention. [Figure 4] FIG. 10 is a block diagram showing the configuration of a signal waveform setting device according to a third embodiment of the present invention. [Figure 5] 10 is a flowchart showing the operation of the signal waveform setting device according to the third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] <Embodiment 1> A first embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 is a diagram for explaining the configuration of a circuit board, and Figure 2 is a diagram for explaining the processing operation of the circuit board.

[0015] [composition] The circuit board 1 of the present invention has a function of optimizing the signal waveform of an ultra-high speed signal (for example, 10 Gbps or more) within the circuit board, and is used, for example, in communication devices and supercomputers that use ultra-high speed signals.

[0016] 1, circuit board 1 includes a transmitter 10 that transmits an ultrahigh-speed signal, an adjuster 20 that adjusts the waveform of the ultrahigh-speed signal, a receiver 30 that receives the ultrahigh-speed signal, and a monitor and control unit 40 that automatically sets the parameters of each unit. The functions of transmitter 10, adjuster 20, receiver 30, and monitor and control unit 40 may be realized by electronic circuits mounted within circuit board 1, or may be realized by a computing device mounted on circuit board 1 executing a program.

[0017] The monitoring and control unit 40 in this embodiment first has the function of performing initial amplitude / emphasis / equalizer settings for the transmitter 10, the adjuster 20, and the receiver 30. The monitoring and control unit 40 then automatically sets each setting value by sequentially executing the first, second, third, and fourth steps described below. That is, the monitoring and control unit 40 has a first function that performs a first step of setting amplitude and emphasis settings for the signal waveform output from the upstream transmitter 10 (transmitting device) based on error information detected by the downstream receiver 30 from an ultra-high-speed signal in the circuit board 1; a second function that performs a second step of setting equalizer settings for the receiver side of the adjuster 20 (a device having a waveform adjustment function); a third function that performs a third step of setting amplitude / emphasis settings for the transmitter side of the adjuster 20; and a fourth function that performs a fourth step of setting equalizer settings for the downstream receiver 30 (receiving device). Each function and step will be described in detail below.

[0018] The monitoring and control unit 40 performs the following process as a first step of the first function (reference symbol A1 in FIG. 1, step S1 in FIG. 2). First, the monitoring and control unit 40 gradually increases the amplitude setting value for the transmitter 10 from the minimum value to the maximum value, and searches for an interval (range) of amplitude values ​​where the error count detected by the receiver 30 is at its minimum (including error-free). The monitoring and control unit 40 sets the median value of the interval where the error count is at its minimum (including error-free) as the amplitude setting value for the transmitter 10. The monitoring and control unit 40 also gradually increases the emphasis setting value for the transmitter 10 from the minimum value to the maximum value, and searches for an interval (range) of emphasis values ​​where the error count detected by the receiver 30 is at its minimum (including error-free). The monitoring and control unit 40 sets the median value of the interval where the error count is at its minimum (including error-free) as the emphasis setting value for the transmitter 10.

[0019] The monitoring and control unit 40 is not limited to setting the set value to the intermediate value of the range of amplitude / emphasis values ​​when the error count detected by the receiving unit 30 is at its minimum value (including error-free). For example, the monitoring and control unit 40 may set the set value to one of the amplitude / emphasis values ​​when the error count is at its minimum value (including error-free), or may set the set value to a value calculated based on the amplitude / emphasis value when the error count is at its minimum value (including error-free). Furthermore, the monitoring and control unit 40 is not necessarily limited to setting the set value based on the amplitude / emphasis value when the error count is at its minimum value (including error-free), but may set the set value based on the amplitude / emphasis value when the error count is at a preset value or range, or may set the amplitude / emphasis set value based on other information of the signal received by the receiving unit 30.

[0020] The monitoring control unit 40 performs the following process as a second step of the second function (reference symbol A2 in FIG. 1, step S2 in FIG. 2). First, the monitoring control unit 40 gradually increases the equalizer setting value for the receiving side 21 of the adjustment unit 20 from the minimum value to the maximum value, and searches for an interval (range) of the equalizer value in which the error count detected by the receiving unit 30 is the minimum value (including error-free). The monitoring control unit 40 sets the median value of the interval in which the error count is the minimum value (including error-free) as the equalizer setting value for the receiving side 21 of the adjustment unit 20. Note that the monitoring control unit 40 is not limited to setting the median value of the interval in which the error count detected by the receiving unit 30 is the minimum value (including error-free) as the setting value. For example, the monitoring control unit 40 may set the set value to one of the equalizer values ​​when the error count is at its minimum value (including error-free), or may set the set value to a value calculated based on the equalizer value when the error count is at its minimum value (including error-free). Furthermore, the monitoring control unit 40 is not necessarily limited to setting the set value based on the equalizer value when the error count is at its minimum value (including error-free), but may set the set value based on the equalizer value when the error count is at a preset value or range, or may set the equalizer set value based on other information of the signal received by the receiving unit 30.

[0021] The monitoring and control unit 40 performs the following process as a third step by its third function (reference symbol A3 in FIG. 1 and step S3 in FIG. 2). First, the monitoring and control unit 40 gradually increases the amplitude setting value for the transmitting side 22 of the adjustment unit 20 from a minimum value to a maximum value, and searches for an interval (range) of amplitude values ​​where the error count detected by the receiving unit 30 is at its minimum (including error-free). The monitoring and control unit 40 sets the median value of the interval where the error count is at its minimum (including error-free) as the amplitude setting value for the transmitting side 22 of the adjustment unit 20. The monitoring and control unit 40 also gradually increases the emphasis setting value for the transmitting side 22 of the adjustment unit 20 from a minimum value to a maximum value, and searches for an interval (range) of emphasis values ​​where the error count detected by the receiving unit 30 is at its minimum (including error-free). The monitoring and control unit 40 sets the median value of the interval where the error count is at its minimum (including error-free) as the emphasis setting value for the transmitting side 22 of the adjustment unit 20.

[0022] The monitoring and control unit 40 is not limited to setting the set value to the intermediate value of the range of amplitude / emphasis values ​​when the error count detected by the receiving unit 30 is at its minimum value (including error-free). For example, the monitoring and control unit 40 may set the set value to one of the amplitude / emphasis values ​​when the error count is at its minimum value (including error-free), or may set the set value to a value calculated based on the amplitude / emphasis value when the error count is at its minimum value (including error-free). Furthermore, the monitoring and control unit 40 is not necessarily limited to setting the set value based on the amplitude / emphasis value when the error count is at its minimum value (including error-free), but may set the set value based on the amplitude / emphasis value when the error count is at a preset value or range, or may set the amplitude / emphasis set value based on other information of the signal received by the receiving unit 30.

[0023] The monitoring and control unit 40 performs the following process as a fourth step based on the fourth function (reference symbol A4 in FIG. 1 and step S4 in FIG. 2). First, the monitoring and control unit 40 gradually increases the equalizer setting value for the receiving unit 30 from the minimum value to the maximum value, and searches for an interval (range) of the equalizer value in which the error count detected by the receiving unit 30 is at its minimum value (including error-free). The monitoring and control unit 40 sets the median value of the interval in which the error count is at its minimum value (including error-free) as the equalizer setting value for the receiving unit 30. Note that the monitoring and control unit 40 is not limited to setting the median value of the interval in which the error count detected by the receiving unit 30 is at its minimum value (including error-free) as the setting value. For example, the monitoring and control unit 40 may set one of the equalizer values ​​in which the error count is at its minimum value (including error-free) as the setting value, or may set a value calculated based on the equalizer value in which the error count is at its minimum value (including error-free) as the setting value. Furthermore, the monitoring control unit 40 is not necessarily limited to setting the setting value based on the equalizer value when the error count is at the minimum value (including error-free), but may set the setting value based on the equalizer value when the error count is at a preset value or range, or may set the equalizer setting value based on other information of the signal received by the receiving unit 30.

[0024] It is desirable for the monitoring control unit 40 to perform the process of setting each setting value in the above-mentioned order of step 1, step 2, step 3, and step 4, but the steps may be performed in any order. Also, if the receiving unit 30 does not detect an error-free state in each step, the monitoring control unit 40 may repeat the step.

[0025] As described above, in this embodiment, the optimal parameter setting values ​​for each device, such as the transmitter 10, the adjustment unit 20, and the receiver 30, can be found and set by an algorithm automatically executed by the monitoring and control unit 40. This reduces the time and cost required for examining and adjusting the setting values ​​for each device. It also absorbs the characteristics of the PCB (Printed Circuit Board) used in the circuit board and the variations in device characteristics. Furthermore, costs can be reduced by replacing the PCB with an inexpensive material that has a large variation in individual characteristics.

[0026] Although the above describes the case where setting values ​​for characteristics of ultra-high speed signals such as amplitude, emphasis, and equalizer are set, the monitoring control unit 40 may also set setting values ​​for other characteristics of the ultra-high speed signal based on the signal received by the receiving unit 30.

[0027] <Embodiment 2> Next, a second embodiment of the present invention will be described with reference to Fig. 3. Fig. 3 is a diagram for explaining the configuration of a circuit board in the second embodiment.

[0028] The circuit board in this embodiment includes a plurality of circuit boards 51, 52, 53, and 54, each of which is equipped with the transmitting unit 10, adjusting unit 20, receiving unit 30, and monitoring control unit 40 described in embodiment 1. In other words, in this embodiment, the respective units 10, 20, 30, and 40 of the circuit board 1 in embodiment 1 are divided and mounted on a plurality of circuit boards 51, 52, 53, and 54, and each is connected by cables and connectors. The functions of the transmitting unit 10, adjusting unit 20, receiving unit 30, and monitoring control unit 40 in this embodiment are the same as those described above.

[0029] In the example of Figure 3, each of the circuit boards 51, 52, 53, and 54 is shown to have one device (either the transmitter 10, the adjuster 20, the receiver 30, or the monitor and controller 40) mounted thereon, but multiple devices may be mounted on one circuit board.

[0030] <Embodiment 3> Next, a third embodiment of the present invention will be described with reference to Fig. 4 to Fig. 5. Fig. 4 is a block diagram showing the configuration of a signal waveform setting device in the third embodiment, and Fig. 5 is a flowchart showing the operation of the signal waveform setting device. Note that this embodiment shows an outline of the configuration of the circuit board and signal waveform setting method described in the above embodiments.

[0031] 4, signal waveform setting device 110 in this embodiment sets a signal waveform on circuit board 100 which includes transmitting unit 101 which transmits an ultrahigh-speed signal, receiving unit 103 which receives the ultrahigh-speed signal, and adjusting unit 102 which is disposed between transmitting unit 101 and receiving unit 103 and adjusts the waveform of the ultrahigh-speed signal. Signal waveform setting device 110 is equipped with first function 111, second function 112, third function 113, and fourth function 114 which are constructed by a computing device executing a program or which are constructed by electronic circuits.

[0032] The signal waveform setting device 110 then executes the signal waveform setting method shown in the flowchart of FIG. 5 using the first function 111, second function 112, third function 113, and fourth function 114 constructed as described above.

[0033] As shown in FIG. 5, the signal waveform setting device 110 A first step of setting the characteristics of an ultra-high speed signal transmitted from a transmitting unit 101 based on a signal received by a receiving unit 103 (step S101); a second step of setting the characteristics of the ultra-high speed signal received at the receiving side of the adjustment unit 102 based on the signal received by the receiving unit 103 (step S102); a third step of setting the characteristics of the ultra-high speed signal transmitted from the transmitting side of the adjustment unit 102 based on the signal received by the receiving unit 103 (step S103); a fourth step of setting the characteristics of the ultra-high speed signal received by the receiving unit 103 based on the signal received by the receiving unit 103 (step S104); are configured to run in any order.

[0034] The above-described program can be stored and supplied to a computer using various types of non-transitory computer-readable media. Non-transitory computer-readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (e.g., flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (e.g., magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / Ws, and semiconductor memories (e.g., mask ROMs, PROMs (Programmable ROMs), EPROMs (Erasable PROMs), flash ROMs, and RAMs (Random Access Memory)). The program may also be supplied to a computer by various types of transitory computer-readable media. Examples of transitory computer-readable media include electrical signals, optical signals, and electromagnetic waves. The transitory computer-readable media can supply the program to a computer via a wired communication path such as an electric wire or optical fiber, or via a wireless communication path.

[0035] Although the present invention has been described above with reference to the above-mentioned embodiments, the present invention is not limited to the above-mentioned embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

[0036] <Additional Notes> The above-described embodiments may be partially or entirely described as follows: The following provides an overview of the configurations of the signal waveform setting method, signal waveform setting device, and program according to the present invention. However, the present invention is not limited to the following configurations. (Appendix 1) A signal waveform setting method for a circuit board including a transmitter that transmits an ultrahigh-speed signal, a receiver that receives the ultrahigh-speed signal, and an adjuster that is disposed between the transmitter and receiver and adjusts the waveform of the ultrahigh-speed signal, a first step of setting characteristics of an ultra-high speed signal transmitted from the transmitting unit based on a signal received by the receiving unit; a second step of setting the characteristics of the ultra-high speed signal received by the receiving side of the adjustment unit based on the signal received by the receiving unit; a third step of setting the characteristics of the ultra-high speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit; a fourth step of setting characteristics of the ultra-high speed signal received by the receiving unit based on the signal received by the receiving unit; in any order, Signal waveform setting method. (Appendix 2) 10. The signal waveform setting method according to claim 1, The first step, the second step, the third step, and the fourth step are performed in this order. Signal waveform setting method. (Appendix 3) 3. The signal waveform setting method according to claim 1, further comprising: the first step includes setting a characteristic of the ultrahigh-speed signal transmitted from the transmitter based on a signal received by the receiver when the characteristic of the ultrahigh-speed signal transmitted from the transmitter is gradually changed; the second step includes setting a characteristic of the ultrahigh-speed signal received by the receiving side of the adjustment unit based on a signal received by the receiving unit when the characteristic of the ultrahigh-speed signal received by the receiving side of the adjustment unit is gradually changed; the third step includes setting a characteristic of the ultrahigh-speed signal transmitted from the transmission side of the adjustment unit based on a signal received by the reception unit when the characteristic of the ultrahigh-speed signal transmitted from the transmission side of the adjustment unit is gradually changed; the fourth step includes setting the characteristics of the ultrahigh-speed signal received by the receiving unit based on the signal received by the receiving unit when the characteristics of the ultrahigh-speed signal received by the receiving unit are gradually changed. Signal waveform setting method. (Appendix 4) 4. A signal waveform setting method according to claim 3, The first step sets the amplitude of the ultrahigh-speed signal transmitted from the transmitter based on an amplitude value corresponding to a case where an error count detected by the receiver when the amplitude of the ultrahigh-speed signal transmitted from the transmitter is gradually increased from a minimum value to a maximum value is a predetermined value, and sets the emphasis of the ultrahigh-speed signal transmitted from the transmitter based on an emphasis value corresponding to a case where an error count detected by the receiver when the emphasis of the ultrahigh-speed signal transmitted from the transmitter is gradually increased from a minimum value to a maximum value is a predetermined value. the second step includes setting an equalizer for the ultrahigh-speed signal received by the receiver side of the adjustment unit based on an equalizer value corresponding to a case where an error count detected by the receiver unit when the equalizer for the ultrahigh-speed signal received by the receiver side of the adjustment unit is gradually increased from a minimum value to a maximum value, and The third step sets the amplitude of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit based on an amplitude value corresponding to a case where an error count detected by the receiving unit when the amplitude of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit is gradually increased from a minimum value to a maximum value is a predetermined value, and sets the emphasis of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit based on an emphasis value corresponding to a case where an error count detected by the receiving unit when the emphasis of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit is gradually increased from a minimum value to a maximum value is a predetermined value, the fourth step sets an equalizer for the ultrahigh-speed signal received by the receiving unit based on an equalizer value corresponding to a case where an error count by the receiving unit is a predetermined value when the equalizer for the ultrahigh-speed signal received by the receiving unit is gradually increased from a minimum value to a maximum value; Signal waveform setting method. (Appendix 5) 5. A signal waveform setting method according to claim 4, the first step sets the amplitude of the ultrahigh-speed signal transmitted from the transmitter based on the amplitude value when the error count detected by the receiver is at a minimum value or when the signal is error-free, and sets the emphasis of the ultrahigh-speed signal transmitted from the transmitter based on the emphasis value when the error count detected by the receiver is at a minimum value or when the signal is error-free; the second step includes setting an equalizer for the ultra-high speed signal received by the receiver side of the adjustment unit based on an equalizer value when the error count detected by the receiver unit is at a minimum value or error-free; The third step sets the amplitude of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit based on the amplitude value when the error count detected by the receiving unit is at a minimum value or error-free, and sets the emphasis of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit based on the emphasis value when the error count detected by the receiving unit is at a minimum value or error-free, the fourth step sets an equalizer for the ultra-high speed signal received by the receiving unit based on an equalizer value when the error count detected by the receiving unit is at a minimum value or error-free. Signal waveform setting method. (Appendix 6) 6. The signal waveform setting method according to claim 5, the first step sets the amplitude of the ultrahigh-speed signal transmitted from the transmitter to a median value of an amplitude range when the error count detected by the receiver is at a minimum value or when the signal is error-free, and sets the emphasis of the ultrahigh-speed signal transmitted from the transmitter to a median value of an emphasis range when the error count detected by the receiver is at a minimum value or when the signal is error-free; the second step sets an equalizer of the ultra-high speed signal received by the receiver side of the adjustment unit to a median value of an equalizer value range when the error count detected by the receiver unit is a minimum value or an error-free state; the third step sets the amplitude of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit to a median value of an amplitude value range when the error count detected by the receiving unit is at a minimum value or when the signal is error-free, and sets the emphasis of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit to a median value of an emphasis value range when the error count detected by the receiving unit is at a minimum value or when the signal is error-free; the fourth step sets the equalizer of the ultra-high speed signal received by the receiving unit to a median value of the equalizer value range when the error count detected by the receiving unit is a minimum value or an error-free state; Signal waveform setting method. (Appendix 7) A signal waveform setting device for setting a signal waveform on a circuit board including a transmitter for transmitting an ultrahigh-speed signal, a receiver for receiving the ultrahigh-speed signal, and an adjuster disposed between the transmitter and receiver for adjusting the waveform of the ultrahigh-speed signal, a first function of setting characteristics of an ultra-high speed signal transmitted from the transmitting unit based on a signal received by the receiving unit; a second function of setting the characteristics of the ultra-high speed signal received at the receiving side of the adjustment unit based on the signal received by the receiving unit; a third function of setting the characteristics of the ultra-high speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit; a fourth function of setting characteristics of the ultra-high speed signal received by the receiver based on the signal received by the receiver; A signal waveform setting device comprising: (Appendix 7.1) 8. The signal waveform setting device according to claim 7, the first function sets a characteristic of the ultrahigh-speed signal transmitted from the transmitter based on a signal received by the receiver when the characteristic of the ultrahigh-speed signal transmitted from the transmitter is gradually changed; the second function sets a characteristic of the ultrahigh-speed signal received at the receiving side of the adjustment unit based on a signal received by the receiving unit when the characteristic of the ultrahigh-speed signal received at the receiving side of the adjustment unit is gradually changed; the third function sets a characteristic of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit based on a signal received by the receiving unit when the characteristic of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit is gradually changed; the fourth function sets the characteristics of the ultrahigh-speed signal received by the receiving unit based on the signal received by the receiving unit when the characteristics of the ultrahigh-speed signal received by the receiving unit are gradually changed; Signal waveform setting device. (Appendix 7.2) A signal waveform setting device according to Appendix 7.1, the first function sets the amplitude of the ultrahigh-speed signal transmitted from the transmitter based on an amplitude value corresponding to a case where an error count detected by the receiver when the amplitude of the ultrahigh-speed signal transmitted from the transmitter is gradually increased from a minimum value to a maximum value is a predetermined value, and sets the emphasis of the ultrahigh-speed signal transmitted from the transmitter based on an emphasis value corresponding to a case where an error count detected by the receiver when the emphasis of the ultrahigh-speed signal transmitted from the transmitter is gradually increased from a minimum value to a maximum value is a predetermined value; the second function sets an equalizer of the ultrahigh-speed signal received at the receiving side of the adjustment unit based on an equalizer value corresponding to a case where an error count detected by the receiving unit when the equalizer of the ultrahigh-speed signal received at the receiving side of the adjustment unit is gradually increased from a minimum value to a maximum value, and the third function sets the amplitude of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit based on an amplitude value corresponding to a case where an error count detected by the receiving unit when the amplitude of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit is gradually increased from a minimum value to a maximum value is a predetermined value, and sets the emphasis of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit based on an emphasis value corresponding to a case where an error count detected by the receiving unit when the emphasis of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit is gradually increased from a minimum value to a maximum value is a predetermined value; The fourth function sets an equalizer of the ultrahigh-speed signal received by the receiving unit based on an equalizer value corresponding to a case where an error count by the receiving unit is a predetermined value when the equalizer of the ultrahigh-speed signal received by the receiving unit is gradually increased from a minimum value to a maximum value. Signal waveform setting device. (Appendix 7.3) A signal waveform setting device according to Appendix 7.2, the first function sets the amplitude of the ultrahigh-speed signal transmitted from the transmitter based on the amplitude value when the error count detected by the receiver is at a minimum value or error-free, and sets the emphasis of the ultrahigh-speed signal transmitted from the transmitter based on the emphasis value when the error count detected by the receiver is at a minimum value or error-free, the second function sets an equalizer for the ultra-high speed signal received by the receiver side of the adjustment unit based on an equalizer value when the error count detected by the receiver unit is at a minimum value or error-free; the third function sets the amplitude of the ultra-high speed signal transmitted from the transmitting side of the adjustment unit based on the amplitude value when the error count detected by the receiving unit is at a minimum value or error-free, and sets the emphasis of the ultra-high speed signal transmitted from the transmitting side of the adjustment unit based on the emphasis value when the error count detected by the receiving unit is at a minimum value or error-free, The fourth function sets an equalizer for the ultra-high speed signal received by the receiving unit based on an equalizer value when the error count detected by the receiving unit is at a minimum value or error-free. Signal waveform setting device. (Appendix 7.4) A signal waveform setting device according to Appendix 7.3, the first function sets the amplitude of the ultrahigh-speed signal transmitted from the transmitter to a median value of an amplitude value range when the error count detected by the receiver is at a minimum value or error-free, and sets the emphasis of the ultrahigh-speed signal transmitted from the transmitter to a median value of an emphasis value range when the error count detected by the receiver is at a minimum value or error-free, the second function sets an equalizer of the ultra-high speed signal received by the receiving side of the adjustment unit to a median value of an equalizer value range when the error count detected by the receiving unit is a minimum value or an error-free value; the third function sets the amplitude of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit to a median value of an amplitude value range when the error count detected by the receiving unit is at a minimum value or when the signal is error-free, and sets the emphasis of the ultrahigh-speed signal transmitted from the transmitting side of the adjustment unit to a median value of an emphasis value range when the error count detected by the receiving unit is at a minimum value or when the signal is error-free; The fourth function sets an equalizer of the ultra-high speed signal received by the receiving unit to a median value of an equalizer value range when the error count detected by the receiving unit is a minimum value or an error-free value. Signal waveform setting device. (Appendix 8) A circuit board including a transmitter that transmits an ultrahigh-speed signal, a receiver that receives the ultrahigh-speed signal, an adjuster that is disposed between the transmitter and receiver and adjusts the waveform of the ultrahigh-speed signal, and a signal waveform setting unit that sets the signal waveform, The signal waveform setting unit a first function of setting the characteristics of the ultra-high speed signal transmitted from the transmitting unit based on the signal received by the receiving unit; a second function of setting the characteristics of the ultra-high speed signal received at the receiving side of the adjustment unit based on the signal received by the receiving unit; a third function of setting the characteristics of the ultra-high speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit; a fourth function of setting characteristics of the ultra-high speed signal received by the receiver based on the signal received by the receiver; Equipped with Circuit board. (Appendix 9) A computing device for setting a signal waveform on a circuit board including a transmitting unit for transmitting an ultrahigh-speed signal, a receiving unit for receiving the ultrahigh-speed signal, and an adjusting unit disposed between the transmitting unit and the receiving unit for adjusting the waveform of the ultrahigh-speed signal, a first function of setting characteristics of an ultra-high speed signal transmitted from the transmitting unit based on a signal received by the receiving unit; a second function of setting the characteristics of the ultra-high speed signal received at the receiving side of the adjustment unit based on the signal received by the receiving unit; a third function of setting the characteristics of the ultra-high speed signal transmitted from the transmitting side of the adjustment unit based on the signal received by the receiving unit; a fourth function of setting characteristics of the ultra-high speed signal received by the receiver based on the signal received by the receiver; A program to achieve this. [Explanation of symbols]

[0037] 1 circuit board 10 Transmitter 20 Adjustment part 21 Receiving side of the adjustment unit 22 Transmitting side of the adjustment unit 30 Receiving unit 40 Monitoring and control section 51, 52, 53, 54 Circuit board 100 Circuit Boards 101 Transmitter 102 Adjustment section 103 Receiving unit 110 Signal waveform setting device 111 First function 112 Second function 113 Third function 114 Fourth function

Claims

1. A signal waveform setting device for setting a signal waveform on a circuit board including a transmitting unit that transmits a signal, a receiving unit that receives the signal, and an adjusting unit that is disposed between the transmitting unit and the receiving unit and adjusts the waveform of the signal, a first function for setting the amplitude or emphasis of the signal transmitted from the transmitter based on an error count detected by the receiver; a second function of setting an equalizer for the signal received at a receiving side of the adjustment unit based on an error count detected at the receiving unit; a third function of setting the amplitude or emphasis of the signal transmitted from the transmitting side of the adjustment unit based on an error count detected by the receiving unit; a fourth function of setting an equalizer for the signal received by the receiver based on an error count detected by the receiver; A signal waveform setting device comprising:

2. A signal waveform setting method for a circuit board including a transmitting unit that transmits a signal, a receiving unit that receives the signal, and an adjusting unit that is disposed between the transmitting unit and the receiving unit and adjusts a waveform of the signal, a first step of setting the amplitude or emphasis of the signal transmitted from the transmitting unit based on an error count detected by the receiving unit; a second step of setting an equalizer for the signal received at a receiving side of the adjustment unit based on the error count detected at the receiving unit; a third step of setting the amplitude or emphasis of the signal transmitted from the transmitting side of the adjustment unit based on the error count detected by the receiving unit; a fourth step of setting an equalizer for the signal received by the receiver based on an error count detected by the receiver; in any order, Signal waveform setting method.

3. A circuit board including a transmitting unit that transmits a signal, a receiving unit that receives the signal, an adjusting unit that is disposed between the transmitting unit and the receiving unit and adjusts a waveform of the signal, and a signal waveform setting unit that sets the signal waveform, The signal waveform setting unit a first function for setting the amplitude or emphasis of the signal transmitted from the transmitter based on an error count detected by the receiver; a second function of setting an equalizer for the signal received at a receiving side of the adjustment unit based on an error count detected at the receiving unit; a third function of setting the amplitude or emphasis of the signal transmitted from the transmitting side of the adjustment unit based on an error count detected by the receiving unit; a fourth function of setting an equalizer for the signal received by the receiver based on an error count detected by the receiver; Equipped with Circuit board.

4. a signal waveform setting unit on a circuit board including a transmitting unit that transmits a signal, a receiving unit that receives the signal, and an adjusting unit that is disposed between the transmitting unit and the receiving unit and adjusts the waveform of the signal; a first function for setting the amplitude or emphasis of the signal transmitted from the transmitter based on an error count detected by the receiver; a second function of setting an equalizer for the signal received at a receiving side of the adjustment unit based on an error count detected at the receiving unit; a third function of setting the amplitude or emphasis of the signal transmitted from the transmitting side of the adjustment unit based on an error count detected by the receiving unit; a fourth function of setting an equalizer for the signal received by the receiver based on an error count detected by the receiver; A program to achieve this.

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