The Sorensen XDL-56-4P is a digitally-controlled linear DC power supply delivering 112 W of precision output for demanding test, development, and automated measurement systems. Multi-range capability enables 2 A at 56 V or 4 A at 25 V, with enhanced 0.1 mA resolution on the 500 mA range. Pure linear topology ensures superior regulation, minimal noise, and fast transient response better than 50 µs. The front panel features direct numeric entry and incremental rotary control with illuminated display and power readout in watts. Remote operation is enabled through GPIB, USB, LAN (LXI-C), and RS-232 interfaces, with dedicated sense terminals for load-end voltage regulation.
Technical Specifications
• Output Voltage: 0–56 V main range; up to 25 V higher-current range
• Output Current: 2 A at 56 V; 4 A at 25 V; 500 mA with 0.1 mA resolution
• Maximum Power: 112 W
• Input: 115/230 VAC, 50/60 Hz (internally adjustable)
• Voltage Setting Resolution: 1 mV
• Current Setting Resolution: 1 mA (0.1 mA on 500 mA range)
• Voltage Accuracy: Calibration-grade
• Current Accuracy: ±(0.2% + 5 mA) main range; ±(0.2% + 0.5 mA) on 500 mA range
• Line Regulation: <0.1% for 10% line voltage change
• Load Regulation: <1.0% for 90% load change
• Output Noise (20 MHz BW): 50 µs recovery for current pulse changes
• Display: Digital with illuminated keys; shows voltage, current, and watts
– Key Features
• Over-voltage, over-current, and over-temperature protection
• Forward voltage withstand to 16 V; reverse protection to 3 A via diode clamp
• Remote sense with selectable local sense from front panel
• Ten user-programmable store/recall setups in non-volatile memory
• Single output configuration
– Typical Applications
• Component and circuit board testing
• Prototype development and validation
• Automated test system integration
• Precision measurement instrument calibration
– Compatibility & Integration
Full programmable interface suite: GPIB, USB, LAN (LXI-C compliant), and RS-232 for local and remote system integration.











