RIGOL’s SPQ Digital Array Measurement-and-Control System targets advanced-computing tests. A modular layout assigns microwave control, data capture/analysis with real-time feedback, bias-voltage with microwave overlay, and clock/trigger distribution to dedicated modules. Now instruction-set driven, SPQ removes many legacy pain points. Already running stably at dozens of sites, it has become a benchmark in this field.
SPQ employs high-sample-rate direct digital playback in place of conventional baseband mixing, thereby eliminating LO leakage and I/Q imbalance at the source. With direct digital output, every microwave pulse maintains uniform amplitude and precise phase, leaving the waveform uncontaminated. Overall signal purity and long-term stability are greatly enhanced, giving noise-sensitive computing elements a precise and reliable drive foundation.
With direct-digital output, each compute node needs just one signal port—no mixers, no multi-channel combiners. Cabling drops sharply and debugging is simplified, so you can build the system in a fraction of the time. The layout is clear and maintenance straightforward, giving experiments with hundreds of nodes efficient, reliable hardware support.
At a 100 MHz carrier with a 1 kHz offset, the SPQ delivers −142 dBc/Hz phase noise and a noise spectral density below −160 dBm/Hz, providing an ultra-clean environment for noise-sensitive computing elements. Decoherence Time is markedly longer, giving a computation window more than twice that of conventional solutions and ensuring long-term stability for deep experiments.









