The Keysight N8740A is a 3300 W programmable DC power supply delivering 150 V at 22 A output in a compact 2U rack-mount form factor. It combines high precision voltage and current control with low ripple characteristics, making it suitable for demanding test, validation, and manufacturing environments. The unit integrates multiple communication interfaces, configurable protection mechanisms, and operational flexibility including parallel and series stacking capabilities.
Technical Specifications
DC Output Ratings
• Voltage: 150 V
• Current: 22 A
• Power: 3300 W
Programming Accuracy
• Voltage: 0.05% + 75 mV
• Current: 0.1% + 44 mA
Output Ripple and Noise
• Constant Voltage (p-p): 100 mV
• Constant Voltage (rms): 25 mV
AC Input
• 190–240 VAC, single phase, 50/60 Hz
• 190–240 VAC, three phase, 50/60 Hz
• 208 VAC, three phase, 50/60 Hz
• Active power factor correction
– Key Features
Control & Programming
Output voltage and current settings, measurements, and trigger configurations are fully programmable. Analog/resistance control of output parameters is supported alongside web server access via standard browser. Bus trigger, calibration functions, and startup mode selection (last setting or reset) are available.
Protection & Monitoring
Over-voltage, over-current, over-temperature, and under-voltage limit protections are integrated. Status register readback and programmable OVP/OCP thresholds enable custom protection schemes. Built-in voltage and current measurement provides real-time output monitoring.
Operational Flexibility
Up to four identical units connect in parallel for increased current output; two units stack in series for increased voltage. Remote sensing compensates for voltage drop across load leads. Fan speed control optimizes noise levels and extends component life. Zero-gap stacking is enabled with no ventilation holes on top and bottom surfaces.
– Interfaces & Connectivity
Standard interfaces include LAN (LXI Core), USB 2.0, and GPIB. The unit is fully LXI Class C compliant. Instrument drivers are available for LabVIEW, LabWindows/CVI, and Measurement Studio.
– Typical Applications
Aerospace/defense, automotive, communications, and research/development testing environments requiring precision DC power with programmable control and extensive instrumentation.
