\u0417\u0435\u043c\u043b\u044f NI PXI-8430\/16<\/strong> is a high-density PXI serial interface module that adds 16 nonisolated RS-232 ports to an automated test system. It is designed for applications that must communicate with numerous instruments, controllers, barcode readers, operator panels or embedded devices from a single PXI chassis.<\/p>\n Each port supports standard RS-232 communication at rates up to 1 Mbaud. DMA-based transfers and multithreaded driver support help reduce processor overhead when several ports communicate concurrently.<\/p>\n The high port density enables one PXI slot to replace several lower-density serial cards. Each port can be configured independently for baud rate, data bits, parity, stop bits and flow-control behavior.<\/p>\n Because the ports are nonisolated, all connected devices must have compatible ground references. Use isolated interfaces or external isolators where ground-potential differences, long cable runs or electrical noise present a risk.<\/p>\n The PXI-8430\/16 uses DMA transfers to move serial data with reduced host-processor involvement. This is particularly valuable when several ports transfer data at the same time or when the test program performs additional acquisition and analysis tasks.<\/p>\n Multithreaded applications can assign separate communication loops to different ports, helping prevent a slow peripheral from delaying unrelated serial devices.<\/p>\n Cable pinout and connector compatibility must be verified before ordering. Do not assume that a cable for a different PXI-843x port count or electrical standard has the same wiring.<\/p>\n The module can communicate with programmable power supplies, temperature chambers, motion controllers and other equipment that uses RS-232. Sixteen ports allow these devices to remain permanently connected to the PXI system.<\/p>\n In production systems, individual ports can connect to different fixture stations or DUT communication channels. Software can send commands, collect results and associate each response with the correct device.<\/p>\n Install a compatible version of NI-Serial and NI-VISA before installing or configuring the module.<\/p>\n Turn off and disconnect chassis power before inserting the PXI-8430\/16 into an appropriate slot.<\/p>\n Secure the module and attach the correct high-density cable and serial breakout assembly without forcing the connectors.<\/p>\n Use NI MAX or the operating system to identify the assigned serial resources, then label the physical breakout connectors to match the software port names.<\/p>\n Configure the baud rate and framing parameters for each peripheral and perform a basic command-and-response test before running the full application.<\/p>\n Check chassis recognition, module seating and NI-Serial installation. Confirm that the operating system version is supported by the installed driver.<\/p>\n Verify the transmit, receive and ground connections. Confirm baud rate, parity, data bits, stop bits and any required hardware-flow-control lines.<\/p>\n Mismatched framing parameters are the most common cause. Also inspect cable length, shielding, grounding and nearby electrical noise.<\/p>\n Check the breakout cable, connector seating and port mapping. Swap two external devices to determine whether the fault follows the device, cable branch or module port.<\/p>\n Review application buffering, read timeouts and thread design. Ensure each port is serviced frequently enough and that the application processes received data without blocking other ports.<\/p>\n The PXI-8430\/16 provides 16 independent RS-232 ports.<\/p>\n Each port supports communication rates up to 1 Mbaud under the applicable configuration and cabling conditions.<\/p>\n No. The PXI-8430\/16 ports are nonisolated.<\/p>\n Not directly. Use an RS-232-to-RS-485 converter or select a PXI-8431-series module.<\/p>\n The module uses NI-Serial and can be accessed through NI-VISA or compatible serial-port APIs.<\/p>\nKey Features of the PXI-8430\/16<\/h3>\n
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PXI-8430\/16 Technical Specifications<\/h2>\n
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\n Product Model<\/th>\n PXI-8430\/16<\/td>\n<\/tr>\n \n Product Type<\/th>\n 16-port PXI serial interface module<\/td>\n<\/tr>\n \n Serial Standard<\/th>\n \u0420\u0421-232<\/td>\n<\/tr>\n \n Number of Ports<\/th>\n 16<\/td>\n<\/tr>\n \n Port Isolation<\/th>\n Nonisolated<\/td>\n<\/tr>\n \n Maximum Baud Rate<\/th>\n 1 Mbaud per port<\/td>\n<\/tr>\n \n Data Transfer<\/th>\n DMA-based architecture<\/td>\n<\/tr>\n \n Communication Mode<\/th>\n Full duplex<\/td>\n<\/tr>\n \n Flow Control<\/th>\n Hardware and software flow control, configuration dependent<\/td>\n<\/tr>\n \n Software<\/th>\n NI-Serial and NI-VISA<\/td>\n<\/tr>\n \n Programming Interface<\/th>\n Serial API, VISA or operating-system COM ports<\/td>\n<\/tr>\n \n Bus Platform<\/th>\n PXI<\/td>\n<\/tr>\n \n Module Format<\/th>\n 3U PXI<\/td>\n<\/tr>\n \n Front Connection<\/th>\n High-density connector system requiring compatible breakout cables<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Sixteen Independent RS-232 Ports<\/h3>\n
DMA and Multithreaded Operation<\/h3>\n
PXI-8430\/16 Part Number and Accessories<\/h2>\n
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\n Item<\/th>\n \u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435<\/th>\n<\/tr>\n \n PXI-8430\/16<\/td>\n 16-port, nonisolated RS-232 PXI serial module<\/td>\n<\/tr>\n \n High-Density Serial Cable<\/td>\n Connects the module front panel to the serial breakout assembly<\/td>\n<\/tr>\n \n 16-Port DB9 Breakout Assembly<\/td>\n Provides conventional connectors for external RS-232 devices<\/td>\n<\/tr>\n \n Custom Breakout Cable<\/td>\n Supports direct connection to a production fixture or wiring panel<\/td>\n<\/tr>\n \n External Serial Isolator<\/td>\n Adds isolation where ground differences or noise require protection<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n PXI-8430\/16 Applications<\/h2>\n
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Multi-Instrument Test Systems<\/h3>\n
Production Test<\/h3>\n
PXI-8430\/16 Installation Workflow<\/h2>\n
Step 1: Install NI-Serial<\/h4>\n
Step 2: Power Down the PXI Chassis<\/h4>\n
Step 3: Install the Module and Breakout Cable<\/h4>\n
Step 4: Identify the Ports<\/h4>\n
Step 5: Test Each Connection<\/h4>\n
PXI-8430\/16 Troubleshooting<\/h2>\n
A serial port does not appear<\/h4>\n
The device receives commands but does not respond<\/h4>\n
Characters are corrupted<\/h4>\n
Only some of the 16 ports work<\/h4>\n
Communication fails under heavy traffic<\/h4>\n
PXI-8430\/16 Comparison<\/h2>\n
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\n \u041c\u043e\u0434\u0435\u043b\u044c<\/th>\n Interface<\/th>\n Best Suited For<\/th>\n<\/tr>\n \n PXI-8430\/16<\/td>\n 16-port RS-232, nonisolated<\/td>\n Highest RS-232 port density<\/td>\n<\/tr>\n \n PXI-8430\/8<\/a><\/td>\n 8-port RS-232, nonisolated<\/td>\n Medium-density RS-232 systems<\/td>\n<\/tr>\n \n PXI-8430\/4<\/a><\/td>\n 4-port RS-232, nonisolated<\/td>\n Smaller serial systems<\/td>\n<\/tr>\n \n PXI-8431\/8<\/a><\/td>\n 8-port RS-485\/RS-422<\/td>\n Differential multidrop and long-distance links<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n PXI-8430\/16 Frequently Asked Questions<\/h2>\n
How many serial ports does the module provide?<\/h4>\n
What is the maximum serial rate?<\/h4>\n
Are the ports isolated?<\/h4>\n
Can it communicate with RS-485 equipment?<\/h4>\n
Which software controls the module?<\/h4>\n
Request a Quote for the PXI-8430\/16<\/h3>\n