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National Instruments 779639-01 Data Acquisition (DAQ) Module

The part number 779639-01 from National Instruments is the identifying part number for the PXI-6289 Data Acquisition (DAQ) Module. This module is also available in the PCI, PXI, and USB formats. The 779639-01 Data Acquisition Module features 32 single-ended analog input channels which can also be configured as 16 differential input analog channels based on the applications. To convert the analog signal into a high-resolution digital copy, this device features an 18-bit analog-to-digital converter which is necessary for digital signal processing of the input analog signals. 

The 779639-01 Data Acquisition Module has a maximum sample rate of 625 kS/s for single-channel and 500 kS/s for multichannel configurations when being used simultaneously. The input voltage range for the analog signals is 0.1 volts to +0.1 volts for sensitive signals and -10 Volts to + 10 volts for high-level signals. It also has a high input impedance with a CMRR ratio of 110 dB to ensure strong and noiseless signals.

This module features 4 analog output channels which help produce the processed signals with the help of the 16-bit digital-to-analog converter which can be used for the required applications. The module has an output update rate of 2.86 MS per second when one channel is used and 2.76 MS per second when multiple channels are used simultaneously. The voltages of the output signal produced are between -10 to 10 volts. The output channels have low output impedance to help generate driving currents for up to 5 mA of current. The 779639-01 Data Acquisition Module has 48 Digital I/O channels or lines of which 32 channels are available on port 0 and the other 16 are on port 1 and 2. Each digital I/O channel is user-programmable and can be programmed as an input or output. The digital channels support 5 Volts TTL/CMOS logic levels and include pull-down resistors to ensure defined logic states when not actively driven.

The module includes two 32-bit general-purpose counters/timers capable of performing various measurements, including edge counting, pulse width, period, and two-edge separation. It also supports quadrature encoder inputs for position measurements. The onboard frequency generator can produce square waves with 10 MHz and 100 kHz base clocks, divided by any integer from 1 to 16.