Arbitrary Waveform Generators (AWGs) are indispensable tools when it comes to producing virtually any type of signal. Spectrum Instrumentation, known for its extensive portfolio of over 70 high-performance AWGs, has now introduced a new feature designed specifically for automated testing environments: the “Sequence Restart Mode.”
This addition builds on the company’s existing Sequence Mode, which already allows users to create long, complex signal patterns by looping and linking waveform segments of different lengths. With this approach, users can generate continuous, highly customized signal streams with ease.
The new Sequence Restart Mode takes things a step further. It enables the entire waveform sequence to restart automatically and with precise timing whenever a trigger event is received.
Because the trigger-to-output delay remains constant, test systems can reliably restart processes exactly when needed. The result is faster testing cycles and improved measurement efficiency.
This feature was developed in direct response to customer feedback. One such request came from Dr. Johannes Rahm at Germany’s national metrology institute, PTB, where his team maintains the country’s official time using cesium atomic clocks.
He needed a specialized version of sequence mode to generate RF signals used in laser-based atomic cooling and fluorescence spectroscopy.
According to Dr. Rahm, Spectrum’s engineering team responded quickly, delivering a solution that worked exactly as required. His successful implementation highlights how customer-driven innovation can benefit a broader user base—what starts as a niche requirement often becomes a valuable feature for many.
Spectrum has made the new Sequence Restart Mode available at 
no additional cost for all AWGs in the 65xx and 66xx series. Users can access it simply by installing the latest drivers.
Designed for seamless integration, Spectrum’s AWGs operate via a unified software environment compatible with both Windows and Linux. Developers can work with popular programming tools such as Python, MATLAB, C++, and LabVIEW, along with a high-level Python API for faster implementation.
As with all Spectrum products, users also benefit from lifetime technical support provided directly by the company’s engineering team, along with ongoing free software and firmware updates.
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