Agilent/Keysight 6631B DC Power Supply

The Agilent/Keysight 6631B is a single-output, 80 W linear DC power supply engineered for high-throughput manufacturing test and demanding R&D applications. It delivers optimized programming and measurement speed with an active down-programmer capable of sinking full rated current and dual-range, precision low current measurement for accurate output monitoring. The instrument supports SCPI commands via GPIB and RS-232 interfaces, with VXI Plug&Play driver compatibility for streamlined system integration.

Technical Specifications

• Output Power: 80 W (single output)


• Voltage Range: 0 to 8 V


• Current Range: 0 to 10 A


• Minimum Current in Constant Current Mode: 40 mA Voltage Performance


• Programming Resolution: 1 mV or 2 mV


• Programming Accuracy (25 °C ± 5 °C): ±(0.04% + 5 mV) or ±0.05% + 5 mV


• Load Regulation: 0.01% + 2 mV or 2 mV


• Line Regulation: 0.01% + 5 mV or 0.5 mV


• Ripple and Noise (20 Hz to 20 MHz, normal mode): 1 mVrms or 3 mVrms Current Performance


• Programming Resolution: 0.1 mA or 2.5 mA


• Load Regulation: 2 mA


• Line Regulation: 1 mA


• Active Sink Current: 10 A (full rated current) Dynamic Response


• Transient Response Time: <100 μs (50 μs in fast mode) for output voltage to settle within 0.1% of voltage rating or 20 mV following a 50% step change in load current

Key Features

• Dual-range precision low current measurement with built-in microamp system


• Fast command processing and optimized measurement speed for manufacturing throughput


• Active down-programmer provides full-current sinking capability


• Stored state support with status reporting


• Low-output noise design

Typical Applications

• Manufacturing test environments requiring fast throughput


• R&D bench applications demanding precision current measurement


• Automated test systems integrating via GPIB or RS-232

Compatibility & Integration

• SCPI command set via GPIB and RS-232


• VXI Plug&Play driver support


• Input voltage options: 87–106 VAC (Opt 100), 104–127 VAC (Opt 120), 191–233 VAC (Opt 220), 207–253 VAC (Opt 230); all 47–63 Hz


• Compact form factor: 3.5 × 8.5 × 13.7 inches (89 × 216 × 347 mm); 9.3 lbs (4.2 kg)