The National Instruments 778951-01 is a high-performance Digital Waveform Generator, designated as the PCI-6552. This module is equipped with 20 data channels and 4 Programmable Function Interface (PFI) channels, facilitating robust data transmission, control signal generation, and synchronization. It includes 3 input clock terminals and 2 output clock terminals, which enhance its versatility for both signal generation and acquisition. For optimal performance, the PCI-6552 supports multiple clock sources: an onboard voltage-controlled crystal oscillator with a frequency range of 48 Hz to 100 MHz, an external clock connected via an SMB jack with a frequency range of 20 kHz to 100 MHz, and the STROBE signal, which can also function as a clock source during data acquisition.

The onboard memory of the 778951-01 varies based on the channel configuration, supporting sizes of 4 MBytes, 32 MBytes, or 256 MBytes. The module operates with a maximum current draw of 2.0 A at +3.3 V, with typical and maximum current consumption at +5 V ranging from 1.8 A to 2.4 A, and at +12 V it consumes between 0.3 A to 0.5 A, while drawing 0.2 A at -12 V. The typical power consumption is 21.6 W, with a maximum of 27 W. The operating temperature range for the PCI-6552 is specified from 0 °C to 45 °C, with a relative humidity of 10% to 90%. For storage, the module can withstand broader temperature extremes of -20 °C to 70 °C and a relative humidity range from 5% to 95%. The PCI-6552 is designed for demanding industrial applications, ensuring reliability and precision in digital waveform generation and data acquisition tasks.