Integrated Control Interface for DUT Standard Adaptation
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Solution Overview
Problem
Conventional test devices for high-speed transmission devices lack direct control over devices under test (DUT) via integrated MDIO and non-MDIO control signals, requiring external control devices and conversion devices, which complicates synchronization and result correlation.
Innovation Solution
A test device with an integrated control interface that adapts to various standards, allowing direct and full control of DUTs via MDIO and non-MDIO control signals, eliminating the need for external control devices and conversion devices, and enabling synchronized test results and status monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an external control device and conversion device are used to control the DUT, then the test device can interface with various standards, but the synchronization between control signals and test data becomes difficult and complex
Solution Approach 1:
The patent combines the control interface and test interface into a single integrated control device. The control device includes both control signal generation capabilities and test data transmission capabilities, allowing direct control of the DUT without requiring separate external control devices and conversion devices. This integration eliminates the synchronization problems that arise when multiple separate devices must coordinate their operations.
Solution Approach 2:
The control device is designed with multi-functional capabilities to handle both control plane operations (MDIO and non-MDIO control signals) and data plane operations (test data transmission). The device can adapt to multiple standards (CFP, CFP2, CFP4, OIF-MSA-100GLH) through configurable interface protocols while maintaining a unified control architecture, eliminating the need for separate conversion devices for different standards.
2Ease of operation
If an external control device is used, then control over the DUT is achieved, but the correlation between test results and status information becomes difficult
Solution Approach 1:
The control device integrates both control functionality and test measurement functionality into a single system. The control device can issue control signals to the DUT and simultaneously capture test results and status information from the same device. This integration ensures that control actions and observed results are temporally and causally correlated, eliminating the information loss that occurs when control and measurement are performed by separate devices.
3Adaptability or versatility
If conversion devices are used to adapt control signals, then compatibility with different standards is achieved, but the test setup becomes more complex
Solution Approach 1:
The control device incorporates universal interface capabilities that can adapt to multiple standards (CFP, CFP2, CFP4, OIF-MSA-100GLH) through software configuration and programmable signal generation. The device includes configurable MDIO and non-MDIO control signal outputs that can be programmed to match different standard requirements, eliminating the need for hardware conversion devices for each standard and simplifying the overall test setup.
4Measurement precision
If real-time control software is run on the external control device, then synchronization precision is improved, but the operational complexity and resource requirements increase
Solution Approach 1:
The control device integrates control signal generation and test data transmission in a single synchronized architecture. The device uses internal timing and control logic to coordinate control signals with test data operations, eliminating the need for complex real-time operating systems and software synchronization mechanisms. The integrated design provides precise synchronization through hardware-level coordination rather than software-based timing.
Data Source
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AI summary
A test device is provided for testing a device under test (DUT) having a control interface compliant with a standard selected from a plurality of standards each supporting a common set of management data input/output (MDIO) and non-MDIO control signals. The test device includes a test interface and an integrated control interface. The integrated control interface adapts to the standard with which the control interface of the DUT complies, so that the integrated control interface directly and fully controls the DUT via at least the common set of MDIO and non-MDIO control signals. The integrated control interface exchanges control signals selected from the common set of MDIO and non-MDIO control signals with the control interface of the DUT to monitor the DUT and thereby obtain status information about the DUT.