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National Instruments 779309-01 Dynamic Signal Acquisition Device

The part number 779309-01 from National Instruments is the identifying part number for the PCI-4462 Dynamic Signal Acquisition Device. This device features 4 input channels and the users can select the AC or DC coupling per channel. The device features a 24-bit delta-sigma analog-to-digital converter for each channel, to help convert the analog signal to a high-resolution and accurate digital signal for processing.

This module sampling rates from 100 S/s to 204.8 kS/s, with a resolution of 181.9 μS/s, helping acquire accurate and precise data. This device has a FIFO buffer size of 4,095 samples which helps with efficient data transfer. This module can handle input voltages for the chassis ground of up to ±30 Volts on the positive terminal and ±5 Volts on the negative terminal.

The AC-coupled measurement accuracy for the 779309-01 is characterized by a gain amplitude accuracy of 0.05 dB maximum within 5 degrees Celsius of the last self-calibration temperature, and 0.1 dB maximum over the full operating temperature range. The DC-coupled measurement accuracy is defined by a gain amplitude accuracy of 0.5% maximum within 5 degrees Celsius of the last self-calibration temperature, and 1% maximum over the full operating temperature range. 

The power requirements of the 779309-01 include a +3.3 Volts supply at 2100 milliamps and a +12 Volts supply at 810 milliamps. It has an ambient temperature range of 0 degrees Celsius to 55 degrees Celsius and supports a relative humidity range of 10% to 90%, noncondensing. The device is designed for indoor use and is rated for a maximum altitude of 2,000 meters. The 779309-01 is housed in a 3U PXI Express module form factor, with dimensions of 16 cm × 10 cm (6.3 in. × 3.9 in.), and weighs about 326 g (11.5 oz) making it compact, portable and easier to maintain. This module should only be operated indoors as it does not feature an Ingress protection rating and could potentially be affected by dust and moisture which may affect the overall performance of the module and long-term reliability.