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技术资料下载：
PXI8433手册
Features:
- Supports RS-422 and RS-485 Serial Protocols
- Offers Port-PC Isolation and Port-Port Isolation
- 10-Position I/O Modular Connector
The National Instruments PXI-8433 RS485/RS422 High-Performance, Isolated Multi-Port Serial Interface series are high-performance industrial interface for high-speed, port-to-port isolated communication with RS485 and RS422 devices. It features high-performance DMA transfers, multithreading, and multiprocessor support. You can also select between 4- and 2-wire transceiver modes for full- and half-duplex communication. NI serial interfaces also appear as standard COM ports for compatibility with programs that use serial communications.
