Improve the PSG phase noise performance
The PSG equipped with Option UNX sets the industry standard for microwave signal generator phase noise performance. Option UNX replaces the PSG standard internal frequency reference with a high performance internal frequency reference that improves the close-in phase stability to provide superior phase noise performance at offsets less than 10 kHz from carrier. Enable the integrated dividers, included with Option UNX, and the PSG will use a dividing technique to output carrier frequencies below 250 MHz, resulting in improved phase noise at all offsets for these frequencies. Disabling the dividers returns the PSG to a standard mode of creating low frequencies with a heterodyning technique. This mode provides wider deviation bandwidth for frequency and phase modulated signals.
Typical applications
Option UNX is recommended for signal generation applications that require spectrally pure signals and/or outstanding modulation accuracy. Typical applications include LO substitution, low-jitter clock stimulus, blocking/interference signals, stimulus/response measurements close to carrier, and high-order digital-modulation-format (e.g. 128 QAM, OFDM) signal generation.
This option can be added as a product upgrade.