The National Instruments part number 779670-00 identifies the PXI-5650 RF Signal Generator, a high-performance device designed for a variety of RF applications. This signal generator operates within a frequency range of 500 kHz to 1.3 GHz and offers exceptional frequency resolution of less than 3 Hz. It features an internal reference clock with an initial accuracy of ±3 ppm, minimal temperature drift of ±1 ppm from 15 °C to 35 °C, and an aging rate of ±5 ppm per year. The PXI-5650 is equipped with rapid frequency settling times, achieving a median settling time of 1 ms for 0.01 ppm accuracy with narrow loop bandwidth and improving to a median of 0.2 ms in wide loop bandwidth mode for 1.0 ppm accuracy.

The device ensures high spectral purity, with single sideband (SSB) phase noise measurements typically at -111 dBc/Hz at a 10 kHz offset for 100 MHz, -107 dBc/Hz for 500 MHz, and -105 dBc/Hz at 1 GHz. Residual FM at 1 GHz (300 Hz to 3 kHz, RMS) is exceptionally low at less than 0.8 Hz RMS, and jitter at 622 MHz within a 1 kHz to 5 MHz bandwidth is typically below 200 fs RMS. The PXI-5650 provides an amplitude range of -90 dBm to 10 dBm, with output power accuracy of ±0.75 dB for powers above -40 dBm and ±1.8 dB for lower levels, dependent on temperature between 15 °C and 35 °C. It achieves a signal-to-noise ratio (SNR) of -140 dBc/Hz or better for output levels at 0 dBm or higher.

This 3U PXI module occupies a single slot and has dimensions of 2.0 cm × 13.0 cm × 21.6 cm (0.8 in. × 5.1 in. × 8.5 in.), weighing 415 g (14.6 oz). It operates effectively within an ambient temperature range of 0 °C to 55 °C and a relative humidity range of 10% to 90%, noncondensing. Additionally, the module can endure a storage temperature range from -40 °C to 70 °C with humidity levels from 5% to 95%, noncondensing, making it suitable for demanding environments.