VXI Technology, Inc.

REGISTER

WRITE

BUSY

16ms

 

300ms

 

OUTPUT

FIGURE 3-8:MULTI-SWITCH TIMING

Calculating Switching Time

The time-period for switching a channel can be divided into three constituent periods. The first time-period ends when the BUSY signal goes high. For calculating switching time, however, only the last two periods are used.

The second time-period starts when BUSY goes high and the switch armature begins to move. There is a 16 ms period until the armature reaches the specified output channel. There is a 16 ms period for each switched channel, including duplex and blocked channels. During this period, optical output is invalid; optical noise may appear on various output channels as the armature rotates.

The third time-period is called the debounce period. It ends when the armature is steady, the switch has established a valid optical connection, and BUSY goes low. The debounce period lasts for 300 ms.

Switching time is the sum of the second and third time-periods. For example:

Switch from Channel 15 to Channel 1 (1 x N Configuration) Switches through 14 channels

(14 x 16 ms) + 300 ms = 524 ms

Switch from Channel 2 to Channel 6 (2 x N Blocking Configuration) Switches through 2 x 4 (8) channels

(8 x 16 ms) + 300 ms = 428 ms

SM8000 Series Operation

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VXI SM8000 user manual Calculating Switching Time, 8MULTI-SWITCH Timing
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SM8000 specifications

The VXI SM8000 is a versatile and robust modular instrumentation platform that is designed for various testing applications in industries such as aerospace, telecommunications, and military. This advanced test equipment is part of the VXI (Versatile Instrumentation System) standards, which allow for high-speed data acquisition, processing, and analysis.

One of the main features of the VXI SM8000 is its modular architecture, which enables users to configure the system according to their specific testing needs. This flexibility means that users can integrate various modules, including signal generators, oscilloscopes, and digital multimeters, making the system adaptable to a wide range of applications. The modular design also ensures scalability, allowing for easy expansion as test requirements grow.

The VXI SM8000 supports high-speed communication via its advanced backplane design. This design features multiple data buses that facilitate fast communication between modules, ensuring minimal latency and enhanced performance during testing. Moreover, the system is built to accommodate high-density modules, maximizing the amount of test parameters that can be handled simultaneously.

The SM8000 boasts enhanced signal processing capabilities thanks to its digital signal processing (DSP) technology. This feature enables real-time analysis and processing of signals, which is crucial for applications that require rapid feedback and adjustments. Additionally, the system is equipped with high-resolution analog-to-digital converters, ensuring precise measurement and analysis.

One of the key characteristics of the VXI SM8000 is its reliability. Built with robust materials and advanced engineering, the system is designed to endure rigorous testing environments and extreme operating conditions. This durability ensures consistent performance over time, making it a reliable choice for critical applications.

Furthermore, the VXI SM8000 is compatible with various software platforms, enabling seamless integration into existing testing environments. It supports programming languages like LabVIEW and MATLAB, allowing engineers to develop customized test scripts and configurations easily.

In summary, the VXI SM8000 is a powerful and flexible test system that combines modularity, high-speed communication, advanced signal processing, and compatibility with industry-standard software. Its reliability and scalability make it an ideal choice for professionals seeking a comprehensive testing solution across various sectors.
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