Agilent/Keysight 6811A DC Power Supply

The Agilent/Keysight 6811A is a single-phase AC power source and analyzer delivering 375 VA of programmable output power for versatile bench-top testing. It generates AC voltages from 0 to 300 Vrms and DC voltages up to ±425 V, with simultaneous AC and DC output capability including arbitrary waveform generation. The instrument sources AC current to 3.25 A rms and DC current to 2.5 A across a frequency range of DC through 45 Hz to 1 kHz, with extended measurement capability down to 4.5 Hz at full accuracy.

Technical Specifications

Output Performance:

• AC voltage: 0 to 300 Vrms


• DC voltage: ±425 V


• AC current: 0 to 3.25 A rms


• DC current: 0 to 2.5 A


• Output power: 375 VA single-phase


• Frequency range: DC, 45 Hz to 1 kHz (4.5 Hz minimum with 250 µs digitization at ≤4 kHz content)


• Line regulation: 0.1%


• Load regulation: 0.5%


• Ripple and noise (20 kHz–10 MHz): −60 dB relative to full scale


• THD (50/60 Hz): 0.25% maximum; 1% worst case at 45 Hz Measurement Capabilities:

AC RMS voltage, DC voltage, AC+DC voltage, AC RMS current, DC current, AC+DC current, peak voltage, peak current, real power, apparent power, reactive power, and harmonic analysis up to the 50th harmonic with amplitude and phase. Two current measurement ranges provide 10:1 sensitivity enhancement on the low range. Waveform Generation:
Sine, square, and up to 12 user-defined arbitrary waveforms with programmable voltage, current limit, frequency, phase, and distortion. DC output can be applied independently or as an offset to AC signals. Measurement Accuracy:

• RMS voltage: 0.15% + 0.3 V (at 25°C ±5°C)


• RMS voltage resolution: 10 mV measurement; 125 mV programming


• RMS current programming accuracy: 1.2% + 50 mA

Key Features

• Programmable output impedance


• Harmonic analysis with THD measurement


• Waveform digitization capability


• Dual current measurement ranges for enhanced low-current sensitivity

Typical Applications Power supply testing, UPS evaluation, avionics ATE, and regulatory compliance testing requiring AC/DC source simulation and power parameter measurement.

Compatibility & Integration HP-IB (IEEE-488) and RS-232 interfaces with SCPI command language. Analog programming terminals available. Class I benchtop instrument requiring connection to grounded earth terminal (5.25 inch panel height).