Satellite missions depend on the flawless performance of their power conditioning unit (PCU), the subsystem responsible for managing solar input, battery storage, and payload distribution. Failure in any part of this chain jeopardizes communications, imaging, or defense operations. Testing the PCU requires replicating real-world mission conditions such as orbital day–night cycles, eclipse transitions, and payload surges. Traditionally, these validations rely on physical batteries and manual setups, which introduce risk, extend timelines, and inflate facility costs.
This demo video explains how the Keysight high-power ATE system power supplies and regenerative electronic loads transform the approach to satellite battery and payload testing. By replacing physical batteries with a regenerative two-quadrant power supply, engineers can emulate charge, discharge, cycling, and programmable state-of-charge (SoC) and temperature profiles. This creates a safe, flexible substitute for real batteries, minimizing hazards while enabling highly controlled test conditions.
On the output side, the regenerative electronic load accurately mimics payload consumption. Engineers can apply dynamic surges to emulate radar or communications bursts, steady current draws for efficiency mapping, or thermal loads to validate heater and environmental control systems. This flexibility makes it possible to reproduce a full range of payload demands under repeatable conditions, ensuring the PCU can maintain stability and efficiency.
For the input stage, the demo highlights the use of a solar array simulator to deliver realistic IV curves, irradiance sweeps, and eclipse transitions. Instead of relying on live solar panels, engineers can reproduce the exact conditions the satellite will encounter in orbit, including rapid transitions and long-duration sunlight exposure.
All these test elements are orchestrated through the automated power suite software, which integrates solar input simulation, battery emulation, and payload load testing into a unified automated workflow. This orchestration allows teams to capture and replay mission profiles, inject programmed faults, and run automated long-duration tests while synchronizing data capture across voltage, current, and power measurements. Engineers gain sub-millisecond visibility into ripple, recovery, and stability during critical phases of satellite operation.
One of the most important differentiators shown in the demo is regenerative operation. Instead of dissipating energy as heat, the solution returns energy back to the grid, lowering operating costs and reducing thermal load on facilities. This regenerative capability supports long-duration testing without overtaxing lab infrastructure, aligning with both sustainability and cost-efficiency goals.
The video also emphasizes scalability. With configurations up to 192 kilowatts of regenerative power in a compact rack form factor, the platform supports subsystem bring-up as well as full-bus validation. Engineers can scale from small module tests to full satellite power systems without re-architecting their setups.
For aerospace and defense organizations, the benefits are clear:
Accuracy and repeatability: Automated test sequences remove manual error and ensure consistent coverage across runs.
Risk reduction: Safe emulation of batteries and payloads reduces hazards while preserving test fidelity.
Efficiency: Regenerative operation reduces energy bills and cooling requirements.
Scalability: High-density racks enable validation at kilowatt levels required for modern satellites.
Compliance and security: SSDF-aligned software and KeysightCare support provide the trust required in regulated environments.
Ultimately, this demo video illustrates how Keysight helps aerospace and defense teams eliminate the compromises that have long challenged satellite testing. By unifying solar simulation, battery emulation, and payload load testing on a regenerative, automation-ready platform, organizations can accelerate their validation cycles, cut costs, and ensure mission-grade readiness—bringing orbital conditions safely into the lab.
For programs where power is mission assurance, this integrated approach provides the precision, flexibility, and confidence needed to validate without compromise.
