The Keysight (Agilent) 6228B is a dual-output DC power supply engineered to deliver stable, precise voltage and current for demanding laboratory and automated test equipment applications. Each of its two independent supply sections operates from 0–50 V and 0–1 A, yielding 50 W per section (100 W total). The unit features auto-series, auto-parallel, auto-tracking, and independent operation modes, enabling flexible configuration for specific test requirements. Voltage ripple and noise measure 250 µV RMS with 4 mV peak-to-peak in constant voltage mode. Current ripple reaches 250 µA RMS with 2 mA peak-to-peak in constant current mode across the 20 Hz to 20 MHz bandwidth. Load regulation holds to 0.01% + 1 mV for voltage and 0.01% + 250 µA for current. Line regulation is specified at 1 mV (voltage) and 100 µA (current). In tracking mode, the right output tracks the left to within 0.2% ±2 mV, making the supply ideal for bipolar applications.
Technical Specifications
• Dual output configuration with independent or tracking operation modes
• Output voltage: 0–50 V per section
• Output current: 0–1 A per section
• Output power: 50 W per section, 100 W total
• Voltage ripple and noise (CV): 250 µV RMS, 4 mV peak-to-peak
• Current ripple and noise (CC): 250 µA RMS, 2 mA peak-to-peak
• Load regulation: 0.01% + 1 mV (voltage), 0.01% + 250 µA (current)
• Line regulation: 1 mV (voltage), 100 µA (current)
• Tracking accuracy: 0.2% ±2 mV
• Operating temperature: 0 °C to 55 °C
• Ripple/noise bandwidth: 20 Hz to 20 MHz
– Key Features
• Auto-series, auto-parallel, auto-tracking, and independent operation modes
• Dual crowbar overvoltage protection; linked protection in tracking mode
• Four-position meter-function switch for voltage or current display selection
• Front-panel operation mode selection
• Optional ten-turn output controls for voltage and current (Options 007, 008, 009)
• Optional graduated deca-dial controls with three-digit display (Options 013, 014, 015)
– Typical Applications
• Operational amplifier and push-pull stage testing
• Deflection system power requirements
• Bipolar circuit development and validation
• General laboratory power distribution
– Physical Specifications
• Weight: 11 kg (24 lb)
• Form factor: laboratory bench supply
