The Keysight Advanced Power System (APS) is a family of 1 kW and 2 kW programmable DC power supplies built on Keysight's VersaPower architecture and targeted at advanced ATE power testing. The family splits into two performance classes that share the same chassis, connectivity, and measurement foundation: the N6900 Series DC power supplies, designed for ATE applications where high performance is critical, and the N7900 Series dynamic DC power supplies, designed for ATE applications where high-speed dynamic sourcing and measurement is needed. Performance options on the N6900 (301 Accuracy Package, 302 Measurement Enhancements, 303 Source and Speed Enhancements, and 760/761 disconnect and polarity reversal relays) progressively add the dynamic capabilities that ship standard on the N7900.

The APS family is positioned for the complete range of ATE power testing tasks called out on the datasheet: increasing test system throughput through fast programming and command processing, building a continuous source and load for power storage DUTs, protecting expensive DUTs from power-related damage, characterizing dynamic current profiles with the high-resolution digitizer, generating power transients with the arbitrary waveform and list capabilities, capturing inrush current with pre- and post-triggering, maintaining output integrity under dynamic load conditions, tracking power events for root-cause analysis through the Black Box Recorder, and properly powering DUTs on and off via sequencing and adjustable slew rate control. Both N6900 and N7900 supplies also integrate with the Keysight N6700 modular power supply family for cross-platform output sequencing.

Brand Heritage

Keysight Technologies was spun off from Agilent Technologies in 2014 to focus exclusively on electronic measurement, carrying forward the test and measurement legacy that Agilent inherited from Hewlett-Packard when HP separated its measurement business in 1999. The APS family is part of Keysight's modern programmable DC source-measure portfolio.

Compare Other Models in This Series

The Advanced Power System family is organized along two orthogonal axes that the datasheet makes explicit. The first axis is performance class: the N6900 Series targets ATE applications where high performance is critical, while the N7900 Series targets ATE applications where high-speed dynamic sourcing and measurement is needed. The second axis is power and voltage/current rating: each performance class offers five 1 kW models and seven 2 kW models, with voltage ranges from 9 V to 160 V and current ratings scaled to deliver the chassis power.

Within each performance class, the model-number suffix encodes the rating: N6950A/N7950A (9 V, 100 A, 1 kW) through N6954A/N7954A (80 V, 12.5 A, 1 kW) for the 1 kW family, and N6970A/N7970A (9 V, 200 A, 2 kW) through N6977A/N7977A (160 V, 12.5 A, 2 kW) for the 2 kW family. The N6900 and N7900 series are mechanically and electrically interchangeable at the system integration level — same chassis dimensions, same connectivity (LAN/GPIB/USB), same paralleling architecture, same N7909A and N7907A accessories.

Each pre-owned model linked below is its own product page with model-specific availability and pricing. Confirm chassis power (1 kW vs 2 kW), voltage and current rating, performance series (N6900 vs N7900), and any installed options before placing an order — the differences between models in this family directly determine measurement performance and sourcing capability for the target application.

The functional difference between the N6900 and N7900 series is captured in the datasheet's feature comparison: the N7900 ships standard with 16-bit voltage and current programming, 0.5 ms up / 0.35 ms down voltage programming, seamless current ranging with the low current measurement range, V and I digitizers with programmable sample rates, external logging capability, output list capability, arbitrary waveform generation, and output disconnect and polarity reversal relays. The N6900 base configuration provides 14-bit programming, 3 ms up- and down-programming, and the high current measurement range only; performance options 301, 302, 303, and 760/761 progressively add the equivalent N7900 capabilities to an N6900 chassis.

Selection across the 1 kW and 2 kW tiers is driven by DUT power, voltage, and current requirements. The 1 kW models occupy 1U; the 2 kW models occupy 2U and roughly double the rated current at the same voltage. The 120 V and 160 V ratings are available only at the 2 kW power level (N6976A/N7976A and N6977A/N7977A). Two-quadrant sink capability scales with chassis power: standalone supplies sink 10% of rated current; with N7909A power dissipater units installed, 1 kW supplies need one N7909A and 2 kW supplies need two N7909As to reach 100% sink capability.

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Product Core & Specifications

About this used unit

• Warranty included
• Functional verification included
• Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
• Note that unnecessary accessories may not be included (contact Test Architect to confirm).

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.