Agilent/Keysight 6633A DC Power Supply

The Agilent/Keysight 6633A is a 100-watt single-output DC power supply engineered for automated test equipment and systems development. This series-pass regulated unit delivers stable, programmable power across 0–50 VDC and 0–2 ADC with full remote control via GPIB/HP-IB interface and front-panel operation. Dual-mode operation (Constant Voltage and Constant Current) accommodates diverse load requirements, while integrated protection and fast response times support high-throughput test sequences.

Technical Specifications

• Output Range: 0–50 VDC, 0–2 ADC (100 W total)


• Programming Resolution: 12.5 mV (voltage), 0.5 mA (current)


• Programming Accuracy: ±0.07% + 30 mV (voltage); ±0.17% + 3 mA (current)


• Load Regulation: 4 mV (voltage), 1 mA (current)


• Line Regulation: ±0.07% + 15 mV (voltage); ±0.17% + 3 mA (current)


• Output Ripple & Noise: 0.5 mV RMS, 3 mV peak-to-peak


• Output Isolation: ±2 VDC maximum from chassis ground


• Remote Sensing: Compensates for load lead voltage drops up to 2 V per lead


• Current Sinking: Full rated current capability enables rapid down-programming to zero volts

Key Features

• Programmable voltage, current, overvoltage protection (OVP), and overcurrent protection (OCP)


• Fast/Normal mode operation selectable via rear-panel switch

Fast Mode disconnects output capacitors for <400 µs rise/fall times; Normal Mode optimizes output PARD

Voltage settling within 1 LSB (0.025% × rated voltage) in <6 ms (Normal) or <2 ms (Fast)

Built-in digital voltmeter and precision current shunt for direct output measurement and reporting

Programmable status reporting and interrupt generation for fault conditions

Output enable/disable control

Command processing time: 4 ms (GPIB, display disabled)

Measurement averaging time: 50 ms per voltage or current sample

Control Interface

• Front-panel manual adjustment


• GPIB/HP-IB (IEEE-488.2) with SCPI command set for full programmability

Typical Applications

• Component and subsystem characterization in laboratory and production test


• Automated test equipment requiring fast transient response and precise load regulation


• Development and validation of power-sensitive circuits