National Instruments 780339-01 Multifunction Reconfigurable I/O Module

The National Instruments 780339-01 is a Multifunction Reconfigurable I/O Module and is also identified as PXI-7851R. This RIO module is manufactured for high-performance on-board processing and precise control of I/O signals. This model features a user-programmable Virtex-5 LX30 FPGA that provides complete flexibility for system timing and synchronization. The 780339-01 can be customized with the LabVIEW FPGA Module. 

The voltage output range of the NI 780339-01 is ±10 V along with a DC output coupling and an output impedance of 0.5 Ω for. It has a current drive capability of ±2.5 mA and offers protection against short-circuit to ground. The power-on state of the module is user configurable. It supports both master and slave bus interfaces and makes data transfers possible through DMA, interrupts, and programmed I/O. This RIO module also includes three DMA channels for efficient data handling.

The power requirements for the 780339-01 RIO unit are 125 mA at +5 VDC, 525 mA at +3.3 VDC, 0.5 A at +12 VDC, and 0.25 A at -12 VDC. It features 8 x input channels with software-selectable input modes including DIFF, RSE, and NRSE. The ADC type is successive approximation that offers a resolution of 16 bits, a conversion time of 1 μs, and a maximum sampling rate of 750 kS/s per channel. The input impedance is 10 GΩ when powered on and 4.0 kΩ when powered off/overloaded. The input signal range is ±10 V, with overvoltage protection up to ±42 V when powered on and ±35 V when powered off. The NI 780339-01 offers 16-bit resolution for its 8 x single-ended voltage output channels. The update time of the output channels is 1.0 μs along with a maximum update rate of 1 MS/s. The DAC type used is Enhanced R-2R. The digital I/O includes 96 channels that are compatible with TTL and capable of sourcing and sinking 4.0 mA, with a programmable power-on state. It provides short-circuit protection for up to eight lines at a time.

The FPGA on the 780339-01 model is a Virtex-5 LX30 that features 19,200 flip-flops, 19,200 6-input LUTs, 32 DSP48 slices, and 1,152 kbits of embedded block RAM. The module includes three 68-pin female, high-density VHDCI type I/O connectors and operates within a temperature range of 0 °C to 55 °C. This 780339-01 unit is suitable for applications that require precise timing and control, such as hardware-in-the-loop testing, custom protocol communication, sensor simulation, and high-speed control.