National Instruments 781476-01

The National Instruments part number 781476-01 refers to the PXIe-6378 PXI Multifunctional I/O Module, which integrates advanced analog and digital capabilities within a compact 3U PXI form factor. This module is equipped with 16 analog input channels, each offering a 16-bit ADC resolution, a maximum sampling rate of 3.571 MS/s, and an impressive timing accuracy of 10 ns. The input voltage ranges supported are ±1 V, ±2 V, ±5 V, and ±10 V with DC input coupling, accommodating maximum input voltages of ±11 V in Measurement Category I. The module features a common-mode rejection ratio (CMRR) of 70 dB at 60 Hz and delivers an input signal bandwidth of 1 MHz. The input impedance exceeds 100 GΩ during the device’s ON state, while in the OFF state, it is 2 kΩ with an input bias current of ±10 pA, which enhances signal integrity.

In terms of performance, the PXIe-6378 can manage 12,268 samples across channels due to its large FIFO size, employing Direct Memory Access (DMA) through a scatter-gather methodology to facilitate data transfers. This module also includes 4 analog output channels, featuring a 16-bit digital-to-analog converter. The outputs provide a maximum update rate of 3.3 MS/s, with specifications of ±1 LSB differential non-linearity and guaranteed 16-bit monotonicity. Additionally, the output channel slew rate is rated at 20 V/µs with a settling time of 2 µs for a full-scale step, at a precision of 15 ppm (1 LSB). The module accommodates 48 digital I/O/PFI terminals, each programmable for input or output, with voltage protection of ±20 V on up to two pins.

For power requirements, the PXIe-6378 operates at 8.2 Watts at 3.3 Volts or 21.8 Watts at 12 Volts, making it an efficient addition to any industrial automation setup. The overall module weight is 241 g (8.5 oz), ensuring that it remains lightweight for various applications. The PXIe-6378 is designed with dual 68-pin VHDCI connectors for robust connectivity and seamless integration into existing setups.