Connection Circuit Layout for Long-Distance Twisted-Pair Testing
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Solution Overview
Problem
High-quality cables for long-distance wired communication protocols like EIA-485 and EIA-422 are expensive and not readily available, increasing the cost of testing and development.
Innovation Solution
A connection device that doubles or multiples the signal transmission distance of cables by using a circuit layout connecting multiple twisted pairs in series, allowing equivalent performance with fewer physical cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If high-quality cables are used for long-distance signal transmission in wired communication protocols, then the signal transmission distance and quality are improved, but the cable cost increases significantly
Solution Approach 1:
The invention divides a long cable into multiple shorter cable segments connected in series through the connection device. Each segment can be a standard-length, lower-cost cable, and the connection device combines them to achieve the equivalent of a single long cable for testing wired communication protocols requiring long transmission distances.
Solution Approach 2:
The invention transitions from a single-dimension approach (one long cable) to a multi-dimensional approach by connecting multiple cable segments in series through a connection device with multiple terminals. This creates a cascaded structure that extends the effective transmission distance while using affordable standard-length cables.
2Reliability
If high-quality cables are used for long-distance wired communication testing, then the testing accuracy and protocol compliance are improved, but the availability and affordability of cables deteriorate
Solution Approach 1:
The connection device segments the testing setup into multiple manageable cable portions, allowing use of readily available standard-length cables instead of requiring rare long-distance cables. This segmentation makes the testing system easier to assemble and more accessible.
Solution Approach 2:
The connection device serves multiple functions: it connects multiple cable segments, provides signal routing between them, and enables long-distance protocol testing using standard cables. This multi-functionality allows the system to achieve reliable testing without specialized expensive cables.
3Length of moving object
If multiple twisted pairs are connected in series through the connection device, then the equivalent signal transmission distance is doubled or multiplied, but the device complexity increases
Solution Approach 1:
The connection device is segmented into multiple independent terminals (first through fourth transmission terminals), each handling specific cable connections. This modular terminal structure allows the device to manage multiple cable segments while maintaining organizational simplicity and ease of configuration.
Data Source
AI summary
A connection device is provided. The connection device includes a first transmission terminal, a second transmission terminal, a third connection terminal, a fourth connection terminal, and a circuit wiring zone. The third connection terminal is electrically connected to one end of a cable, and the fourth connection terminal is electrically connected to the other end of the cable. The first transmission terminal is electrically connected to the second transmission terminal through the circuit wiring zone, the third connection terminal, and the fourth connection terminal.