Keysight basic DC power supplies offer essential features for a tight budget. The single & dual output, 30-100 W GPIB E3640 series provide small, compact size for bench and system use; low output ripple and noise; and built-in measurements and basic programmable features with GPIB and RS232 interface. The Keysight 54W, multiple output E3646A is a clean, reliable power supply for general purpose applications, and combine convenient benchtop capabilities with flexible system features in a compact, multi-output package. Features Output ratings (@ 0°C to 40°C) 2 outputs Range 1: 0 to 8 V / 3 A Range 2: 0 to 20 V / 1.5 A Programming accuracy (@ 25°C ±5°C), ±(% output + offset) Voltage: <0.05% + 10 mV (<0.1% + 25 mV for output 2 of E3646/47/48/49A) Current: <0.2% + 10 mA Ripple & noise 20 Hz to 20 MHz Normal Mode Voltage: <5 mVpp / 0.5 mVrms Normal Mode Current: <4 mArms Common Mode Current: <1.5 uArms Readback accuracy (@ 25°C ±5°C), ±(% output + offset) Voltage: <0.05% + 5 mV (<0.1% + 25 mV for output 2 of E3646/47/48/49A) Current: <0.15% + 5 mA (<0.15% + 10 mA for output 2 of E3646/47/48/49A)