The National Instruments PCI-8432/4 is a high-performance RS232 serial interface device designed for applications requiring reliable serial communication within a four-wire framework. This device enables seamless integration of a transmitter while ensuring control is efficiently managed to prevent overload in user applications. The PCI-8432/4 automatically gate the receiver whenever the transmitter is engaged, allowing for clear transmission without interference from incoming data. For users operating with NI-Serial on LabVIEW Real-Time, the device provides the capability to manage optional interrupt handling, which can enhance deterministic performance by reducing jitter for time-critical processes. However, enabling this feature may impact overall I/O performance and increase the likelihood of RX FIFO overflows. The device features multiple status LEDs, including a PWR/RDY LED that provides visual feedback during configuration modes and indicates internal errors through distinct flash patterns. This functionality enables users to diagnose issues proactively. The PCI-8432/4 is currently in a mature status as announced by National Instruments but remains available for purchase and servicing through Apex Waves.

In terms of specifications, the PCI-8432/4 supports four ports with a maximum baud rate of 1000 kbits/s (1 Mbps), and it maintains voltage isolation to enhance communication reliability. The device connects via a 10-position modular jack (10P10C) and features a 128-byte FIFO buffer for effective data handling. With a power requirement of +5 VDC and a consumption of 550 mA, the PCI-8432/4 is compactly designed with dimensions of 4.2 in. x 6.9 in. and weighs just 0.23 lb. For software compatibility, it utilizes the NI-Serial driver and includes a comprehensive user manual and maintenance manual available for download. To inquire about pricing, please contact a sales representative directly.