Part Number: 779309-01

The National Instruments 779309-01 is a high-performance PCI-4462 Dynamic Signal Acquisition Device designed for precision measurement applications. This module supports four input channels, allowing users to select between AC and DC coupling for each channel independently. Each input channel is equipped with a 24-bit delta-sigma analog-to-digital converter, ensuring accurate conversion of analog signals into high-resolution digital signals suitable for further processing. The PCI-4462 offers versatile sampling rates ranging from 1 kS/s to 204.8 kS/s, enabling the acquisition of precise data with exceptional timing resolution of 181.9 μS/s.

The device features a substantial FIFO buffer capable of holding 4,095 samples, optimizing data transfer efficiency. It is designed to accommodate input voltages of up to ±30 Volts for the positive terminal and ±5 Volts for the negative terminal relative to the chassis ground. Measurement accuracies are also notable, with AC-coupled configurations achieving a gain amplitude accuracy of 0.05 dB maximum within 5 degrees Celsius of the last self-calibration temperature, and 0.1 dB over the full operating range. DC-coupled measurements exhibit a maximum gain amplitude accuracy of 0.5% within 5 degrees Celsius of the calibration point and 1% throughout the operating temperature spectrum.

Operating requirements include a +3.3 Volts supply at 2100 milliamps and a +12 Volts supply at 810 milliamps. The module is rated for ambient temperatures from 0 to 55 degrees Celsius and relative humidity levels between 10% and 90%, non-condensing. Intended for indoor use, the PCI-4462 has a maximum altitude rating of 2,000 meters. This module is housed in a compact 3U PXI Express form factor, with dimensions of 16 cm x 10 cm (6.3 in. x 3.9 in.) and a weight of approximately 326 g (11.5 oz), making it ideal for various applications. It is important to note that this module lacks an Ingress protection rating, so it should be kept free from dust and moisture to maintain optimal performance and long-term reliability.