Error Rate Measurement Time Calculation for Target Confidence
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Solution Overview
Problem
Existing error rate measurement apparatuses require manual trial and error to set measurement time for achieving a desired confidence level, leading to inefficiency and increased measurement duration, especially when dealing with burst errors and varying error types such as BER, SER, and FEC indicators in systems like PAM4 signals and standards like 400 Gigabit Ethernet and PCIe Gen 6.
Innovation Solution
An error rate measurement apparatus and method that includes a display unit for setting conditions and a processing unit to calculate and display the required measurement time to achieve a specified confidence level, accommodating various error rates and units of measurement like bits, symbols, or codewords, thereby automating the determination of measurement time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual trial and error is used to set measurement time, then the user can adjust measurement time, but the work efficiency decreases and measurement duration increases
Solution Approach 1:
The measurement apparatus automatically calculates and sets the measurement time based on input parameters (target BER, confidence level, bit rate) without requiring manual trial and error. The apparatus serves itself by performing the calculation and setting operations autonomously, eliminating the need for user intervention in the time-setting process.
Solution Approach 2:
The system changes the parameter of measurement time from a manually adjusted value to an automatically calculated value based on mathematical relationships between confidence level, bit rate, and target error rate. This parameter transformation enables automated setting while maintaining measurement accuracy.
2Reliability
If measurement time is set to be long to ensure confidence level, then the confidence level is achieved, but the measurement duration increases
Solution Approach 1:
The system performs preliminary calculation of the required measurement time before actual measurement begins. By pre-calculating the optimal measurement duration based on the desired confidence level and system parameters, the apparatus avoids both under-measurement and excessive measurement time during execution.
Solution Approach 2:
The measurement apparatus uses feedback from the calculated measurement time to automatically adjust and set the measurement duration. The system continuously monitors and ensures the measurement completes within the calculated time frame while maintaining the required confidence level, creating a closed-loop control system.
3Measurement precision
If the user searches for measurement time by substitution, then the desired confidence level can be obtained, but the work efficiency decreases
Solution Approach 1:
The patent replaces the mechanical process of manual trial-and-error substitution with an automated mathematical calculation system. The apparatus uses computational algorithms to directly calculate the measurement time based on the confidence level formula, eliminating the need for iterative manual substitution and significantly reducing setup time.
Data Source
AI summary
An error rate measurement apparatus includes a display unit that displays a setting screen for setting a measurement condition of an error rate of an input signal from a DUT, and a processing unit that calculates a measurement time based on the measurement condition input to the setting screen, in which the setting screen includes a target confidence level input portion for inputting a target confidence level, a transmission rate input portion for inputting a transmission rate, a target error rate input portion for inputting a target error rate, an assumed-number-of-errors input portion for inputting an assumed number of errors during the measurement time, and a measurement time display portion for displaying the measurement time.