The Keysight N7954A Advanced Power System is a 1000 W dynamic DC power supply engineered for automated test equipment requiring high-speed dynamic sourcing and precision measurement. Delivering 80 V and 12.5 A with 9 mVpp noise and ripple, this unit executes output transitions in 0.5 ms and processes commands in less than 2 ms—enabling test speeds up to 100 times faster than standard bench supplies.
Technical Specifications
Electrical Performance
• Maximum Output: 80 V, 12.5 A, 1000 W
• Input: Single Phase 100/240 VAC
• Noise and Ripple: 9 mVpp
• Output Response Time: 0.5 ms
• Command Processing Time: < 2 ms
• Fast Up/Down Programming: Up to 500 µs
• Programming Accuracy: 32 mV
• Measurement Accuracy: 32 mV
• Programming Precision: 14-bit (voltage and current)
• Measurement Precision: 18-bit (voltage and current)
Physical
• Rack Mount: 1U
• Dimensions: 22.39 in (L) × 16.81 in (W) × 1.75 in (H)
– Key Features
• VersaPower Architecture — Engineered for demanding power test scenarios with specifications and
• Advanced Measurement Capability — Dual voltage and current measurement with DMM-class accuracy; supports power, peak power, watt hour, and amp hour metrics
• Two-Quadrant Operation — Full two-quadrant capability with N7909A dissipater units; 10% rated current two-quadrant in standalone configuration
• Programmable Current Limits, Waveforms, and Auto Down-Programming — Complete dynamic control over sourcing behavior
• APS Paralleling — Parallel up to 10 kW across multiple units with equal current sharing and mode maintenance via three-wire rear-panel connection
• Arbitrary Waveform Generation — Supports custom waveform profiles
• Adjustable Slew Rate — Dynamic control over output ramp characteristics
• Optional Black-Box Recorder — N7908A accessory logs measurement data, trigger events, and status bits
– Interfaces & Software
• Connectivity: GPIB (IEEE-488), LAN (LXI-Core), USB
• APS Power Assistant Software — Free application for advanced display, setup, and measurement functions
• BenchVue Enabled — PC-based control, parameter setting, and test automation
– Typical Applications
Battery characterization, power conversion testing, transient load simulation, and multi-unit power bus emulation requiring synchronized dynamic response.
