National Instruments PXI-8146RT

The National Instruments PXI-8146RT is a high-performance embedded PXI controller designed for real-time applications. Featuring a 266 MHz MMX processor, 64 MB of DRAM, and 32 MB CompactFlash storage, this controller operates on an Industry Standard Architecture and Peripheral Component Interface (PCI) bus. It incorporates an IEEE 488.2 (GPIB) interface, fully compatible with NI AT-GPIB/TNT, allowing comprehensive control of external instruments. The model also includes a watchdog timer with a user-defined countdown, which can be reset via its SMB connector or software; this timer can assert signals during software failures, enhancing system reliability. The PXI-8146RT supports easy RAM upgrades with a maximum capacity of 256 MB of 10 ns SDRAM installed using accessible 144-pin SO-DIMMs. Positioned for superior performance compared to its predecessor, the PXI-8145RT, this controller is equipped with a custom TNT4882C ASIC for optimized GPIB capabilities, along with robust MTBF of 257,363 hours. While the PXI-8146RT is marked as obsolete by National Instruments, it remains available for purchase and repair through Apex Waves.