National Instruments 779670-01

The National Instruments 779670-01, also known as the PXI-5651, is a high-performance PXI RF Analog Signal Generator designed to deliver precise signal generation over a wide frequency range from 500 kHz to 3.3 GHz. This module features high-resolution capabilities, achieving frequency resolution of less than 3 Hz for frequencies below 1.3 GHz and under 6 Hz for higher frequencies. The 779670-01 is equipped with two loop bandwidth settings: a narrow bandwidth that provides median settling times of 6.5 ms at 0.01 ppm and 1.5 ms at 0.1 ppm, and a wide bandwidth allowing faster settling times of 1.0 ms at 0.01 ppm and 0.3 ms at 0.1 ppm. The internal reference clock boasts an initial accuracy of ±3 ppm, with temperature stability of ±1 ppm between 15 °C and 35 °C, and an aging rate of ±5 ppm per year. It outputs a 10 MHz signal at 1 Vpk-pk with a 50 Ω impedance and accepts external 10 MHz reference signals within ±10 ppm at amplitudes ranging from 0.2 Vpk-pk to 1.5 Vpk-pk. The module provides superior spectral purity, featuring single sideband phase noise as low as -125 dB/Hz at 100 MHz and -95 dB/Hz at 3 GHz, alongside minimal residual FM characterized by RMS values of less than 0.8 Hz at 1 GHz and 1.5 Hz at 2.4 GHz. The 779670-01 is designed to handle reverse power with RF tolerance up to 0.5 watts and DC voltages up to 25 volts. It supports sine, triangle, and square waveforms for frequency modulation, although it does not facilitate external modulation sources. This compact module requires DC power, drawing a maximum of 1.0 A at both +3.3 V and +12 V, and fits within a 3U, one-slot PXI format with dimensions of 2.0 cm x 13.0 cm x 21.6 cm and a weight of 415 grams. It operates reliably across a temperature range of 0 °C to 55 °C and can be stored in conditions ranging from -40 °C to 70 °C, with a tolerance for altitudes up to 2,000 meters and resistance to non-operational shocks and vibrations in accordance with MIL-PRF-28800F standards. The 779670-01 complies with multiple safety and EMC regulations, including IEC 61010-1 and EN 61326-1, making it an ideal choice for various industrial automation applications.