Application of Mechanical Switch Matrices in High-Speed Data Testing
2024-11-28
Application of Mechanical Switch Matrices in High-Speed Data Testing
With the rapid development of the information industry In industries such as telecommunications, electronics, and multimedia, the demand for higher data transmission speeds and greater bandwidth continues to grow. To ensure the accuracy and stability of high-speed data transmission, thorough testing is essential. As a type of test equipment, mechanical switch matrices play a critical role in high‑speed data testing. This paper primarily discusses the applications of mechanical switch matrices across various high‑speed data‑testing scenarios.
The “Aumiwalker” automated test system for high-speed data cables enables R&D and production testing of a wide range of high-speed data cables. In the complete test system, the mechanical switch matrix is primarily responsible for switching input signals. Depending on the specific test requirements, different switch configurations and connection schemes can be selected to enable multi-channel testing and signal routing, allowing simultaneous testing of multiple cables and thereby improving test efficiency. Rate.
In terms of frequency, it covers an ultra-wideband signal range from DC to 67 GHz, with low insertion loss, low VSWR, and high isolation (typical S‑parameters for the mechanical switch are shown in the table below), ensuring measurement accuracy.
|
|
DC-6GHz |
6-12GHz |
12-18GHz |
18-26.5GHz |
26.5-40GHz |
40-67GHz |
|
VSWR |
1.3 |
1.4 |
1.5 |
1.7 |
1.9 |
2.2 |
|
Insertion Loss ( dB ) |
0.3 |
0.4 |
0.5 |
0.8 |
1.0 |
1.7 |
|
Isolation ( dB ) |
70 |
70 |
55 |
50 |
50 |
50 |
During testing, the repeatability and consistency of matrix channels are also of paramount importance. Mechanical switches can ensure the highest With a service life of 5 million cycles, it ensures high consistency in delay within the specified lifespan, with a tolerance of ±2 ps. It provides reliable connectivity while minimizing signal interference and loss. The figures below show, respectively, the amplitude and phase consistency of a 2×8 full‑switching matrix across the DC–18 GHz frequency range.
Optical module testing
Optical modules are responsible for transmitting data over optical fibers. ， It can convert electrical signals into optical signals, or vice versa. To ensure the optical… The quality and efficiency of communication systems, Performance testing is required.
Mechanical switch matrices are employed in various optical‑module production‑line test systems, connecting multiple fixture test ports to instrument ports and enabling sequential performance measurements of each channel in the optical module via switch‑based switching.
The test system has stringent requirements for insertion loss and isolation, and mechanical switches themselves exhibit low loss and high isolation, thereby ensuring measurement accuracy.
1×32 matrix insertion loss and isolation performance chart
In addition, mechanical switch matrices can offer programmability and automated testing capabilities. Engineers can program the switch matrix to control its operation, enabling automated test workflows and enhancing testing efficiency.
High-speed digital PCIe testing
PCI is a high-speed serial computer expansion standard. Bus Compared with earlier interface standards, this standard offers higher bandwidth, lower latency, and improved performance, meeting the demands of modern computers for faster data transfer speeds.
Mechanical switch matrices are also used in high-speed digital circuits. PCI E-test middle There are specific application scenarios. ：
1 . System expansion: Multiple PCs can be connected. IE Devices are connected to the same system, enabling resource sharing.
2 . Signal routing and switching: Selects input signals from multiple sources and routes them to specific output channels, enabling flexible signal distribution and switching.
3 . Data Acquisition and Monitoring: By connecting various data sources to the switch matrix, specific data channels can be selected and switched for acquisition and monitoring, facilitating data analysis and fault diagnosis.
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Contact Us
Phone: +86-10-63718360
Email: sales@aumiwalker.com
Address: Room 505, Floor 5, Building 6, Phase II, Nord Center, No. 1 Courtyard, East Auto Museum Road, Fengtai District, Beijing
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