PXI-2521全新现货

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继电器健康监测为了简化继电器维护并提高高通道计数系统的可靠性，开关块的NI矩阵开关模块提供了继电器健康监测功能，例如所有NI开关模块上提供的板载继电器计数跟踪，以及通过NI开关健康中心2提供的功能继电器自检。图6：。NI Switch Health center提供继电器健康监测选项，包括功能和电阻自检、板载继电器计数跟踪和报告生成。2 NI Switch Health Center可用于开关块的所有矩阵模块，但电阻继电器自检功能仅在某些PXI矩阵开关模块上可用。要了解哪些设备支持电阻继电器自检功能，请参考知识库文章：哪些NI开关模块支持电阻自检和温度监控？NI-Switch Health Center是一个免费应用程序，它与NI-Switch驱动程序一起安装，可用于监视单个继电器的运行状况、指导继电器更换和生成用户报告。NI Switch Health Center通过组合路由发送信号，并在继电器发生故障、卡在打开或关闭位置时向用户发出警报，从而验证每个继电器的状况。有关交换机健康中心、继电器或交换机拓扑的更多信息，请参阅NI交换机健康中心白皮书。为矩阵扩展而设计的NI开关块的可定制硬件设计使得在PXI中轻松创建大型开关矩阵，同时小化布线，简化连接，并为您的开关需求提供高度的灵活性。开关块系统包括一个用于开关块的PXI载波模块（PXI-2800），该模块占用四个PXI插槽，多可容纳六个用于开关块的1插槽或3个2插槽矩阵模块。用于开关块的PXI载波模块在二个PXI插槽的背面具有一个混合兼容连接器，允许您将其放置在PXI机箱或PXI Express机箱的混合兼容插槽中。有问题吗？联系我们41页| ni。com | PXI交换机模块图7。用于开关块的PXI载波模块（PXI-2800）占用四个PXI插槽，多可容纳六个用于开关块的1插槽矩阵模块，并具有集成模拟总线，设计用于将这些矩阵模块组合成单个大型矩阵，无需额外的外部布线。开关块的PXI载波模块（PXI-2800）具有集成模拟总线，无需额外的外部布线即可轻松扩展矩阵。开关块的每个矩阵模块都有模拟总线继电器，将其行连接到载波的模拟总线，有效地组合连接到模拟总线的任何矩阵。图8：。SwitchBlock的设计便于矩阵扩展，在一个用于SwitchBlock（PXI-2800）的PXI载波模块中允许多达2000个交叉点。只需关闭模拟总线继电器，即可将开关块的矩阵模块与连接到模拟总线的任何其他设备连接。开关块的每个矩阵模块都有A型和B型配置。A型卡上的连接器通过载体的模拟总线为用户提供对中继卡列的访问以及间接行访问。为了保留系统带宽，B类卡不将模拟总线连接到前连接器，只提供通过前连接器访问列的功能。A类卡允许通过模拟总线、模拟总线连接器引脚间接访问矩阵的行。为了优化带宽，一次只能有一个A类卡连接到模拟总线，因此大多数大型开关块矩阵系统都有一个A类卡，其余都是相同型号的B类卡。

Relay Health Monitoring To simplify relay maintenance and increase reliability in high-channel-count systems, NI Matrix Switch Modules for SwitchBlock offer advanced relay health monitoring features, such as onboard relay count tracking, which is available on all NI switch modules, and functional relay self-tests, available through the NI Switch Health Center2. Figure 6. The NI Switch Health center provides advanced relay health monitoring options, including functional and resistive self-tests, onboard relay count tracking, and report generation. 2 The NI Switch Health Center is available all Matrix Modules for SwitchBlock, but the resistive relay self-test feature is only available on some PXI Matrix Switch Modules. To find out which devices support the resistive relay self-test feature, reference KnowledgeBase article: Which NI Switch Modules Support Resistive Self Test and Temperature Monitoring? The NI Switch Health Center is a free application that installs with the NI-SWITCH driver that can be used to monitor individual relay health, guide relay replacement, and generate user reports. The NI Switch Health Center verifies the condition of each relay by sending a signal through a combination of routes and alerting users if a relay has failed stuck open or closed. For more information on the Switch Health Center, relays, or switch topologies, see the NI Switch Health Center white paper. Designed for Matrix Expansion The customizable hardware design of the NI SwitchBlock makes it easy to create large switch matrices in PXI while minimizing wiring, simplifying connectivity, and providing a high degree of flexibility for your switching needs. A SwitchBlock system comprises a PXI Carrier Module for SwitchBlock (PXI-2800) that occupies four PXI slots and can hold up to six 1-slot or 3 2-slot Matrix Modules for SwitchBlock. The PXI Carrier Module for SwitchBlock features a hybrid-compatible connector, on the back of the second PXI slot, which allows you to place it in a PXI chassis or in a hybrid-compatible slot of a PXI Express chassis. Have a question? Contact Us Page 41 | ni.com | PXI Switch Modules Figure 7. The PXI Carrier Module for SwitchBlock (PXI-2800) occupies four PXI slots, can hold up to six 1-slot Matrix Modules for SwitchBlock, and has an integrated analog bus designed to combine those matrix modules into a single large matrix, without additional external wiring. The PXI Carrier Module for SwitchBlock (PXI-2800) has an integrated analog bus, allowing for easy matrix expansion without the need for additional external cabling. Each Matrix Module for SwitchBlock has analog bus relays that connect its rows to the analog buss of the carrier, effectively combining any matrices that are connected to the analog bus. Figure 8. SwitchBlock is designed for easy matrix expansion, allowing up to 2,000 crosspoints in a single PXI Carrier Module for SwitchBlock (PXI-2800). Simply close the analog bus relays to connect that Matrix Module for SwitchBlock with any other devices connected to the analog bus. Each Matrix Module for SwitchBlock is available in Type A and Type B configurations. The connector on the Type A card provides user access to the columns of the relay card as well as indirect row access, through the analog bus of the carrier. To preserve system bandwidth, Type B cards do not connect the analog bus to the front connector and only provide access to the columns through the front connector. Type A cards allow access to the rows of the matrix indirectly through the analog bus, via the analog bus connector pins. To optimize bandwidth, only one Type A card can connect to the analog bus at a single time, so most large SwitchBlock matrix systems have a single Type A card and the rest are Type B cards of the same model number.