NI PXIe-5646R矢量信号收发器
1.产 品 介 绍
品牌：NI
型号：NI PXIe-5646R
产品说明：矢量信号收发器
优势：供应进口原装正品，专业停产配件。
2.产 品 详 情 资 料：
NI PXIe-5646R信号接地连接（每个接头上的针脚7）必须在隔离中继器/转换器和J1的PLC之间，以及隔离中继器/变频器和J2的主机之间。J1端口的针脚7连接到J1接头的金属外壳。J2端口的针脚7连接到J2接头的金属外壳。这两个信号接地连接彼此隔离，并与电源系统接地（接线板上的绿色导线）隔离。为了保持适当的隔离，这些信号接地不能连接在一起。0V 22 23NI PXIe-5646RRD（A’）RD（B’）NI PXIe-5646R开关处于中间位置150Ω 图C-3。示例RS-422隔离中继器/RS-232转换器连接系统配置下图显示了连接隔离中继器/转换器以转换信号、扩展分出数量和获得更大距离的各种方式。任何系统配置都可以减少到最小数量的电缆，每个电缆覆盖整个系统配置的一部分。以下系统配置示例将这些电缆称为电缆A至E，在本节稍后的电缆图中进行了描述。下游和上游竞争。在本节中，简单的多点配置是指
The signal ground connections (pin 7 on each connector) must be made between the Isolated Repeater/Converter and the PLC for J1, and the Isolated Repeater/Converter and the host computer for J2. Pin 7 of the J1 port is connected to the metal shell of the J1 connector. Pin 7 of the J2 port is connected to the metal shell of the J2 connector. These two signal ground connections are isolated from each other and from the power system ground (green wire on the terminal block). To maintain proper isolation, these signal grounds cannot be tied together.0V 22 23 NI PXIe-5646R RD (A') RD (B')NI PXIe-5646R SWITCH IN CENTER POSITION 150 Ω Figure C-3. Example RS-422 Isolated Repeater/RS-232 Converter Connection System Configurations The figures below show various ways you can connect the Isolated Repeater/Converter to convert signals, expand the number of drops, and btain greater distance. Any system configuration can be reduced to a minimum number of cables each covering a part of the overall system configuration. The following examples of system configurations refer to these cables as Cables A through E which are described in Cable Diagrams later in this section. Downstream and Upstream Contention. In this section, simple multidrop configurations are those where a single NI PXIe-5646R
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