Agilent/Keysight E8403A

The Agilent/Keysight E8403A is a C-size, 13-slot VXI mainframe that is a stable platform for VXI instrument modules in automated test systems. It delivers 1000 watts of usable power with carefully engineered thermal management and comprehensive output protection across seven voltage rails.

Technical Specifications

• Output: 1000 watts usable power


• Input voltage: 90 VAC to 264 VAC (single continuous range)


• Input frequency: 47 Hz to 66 Hz across full input voltage range


• Output voltages at backplane (0–55°C): – +5V: ±0.25V / –0.125V, 50 mV ripple/noise – +12V: +0.60V / –0.36V, 50 mV ripple/noise – –12V: –0.60V / +0.36V, 50 mV ripple/noise – +24V: +1.20V / –0.72V, 150 mV ripple/noise – –24V: –1.20V / +0.72V, 150 mV ripple/noise – –5.2V: –0.26V / +0.156V, 50 mV ripple/noise – –2V: –0.10V / +0.10V, 50 mV ripple/noise


• Inrush current: 25 A typical at 110 VAC; 55 A typical at 264 VAC


• Protection: Full shutdown on over-temperature, over-voltage, over-current, short-to-ground, and short-to-other-output conditions; recovery upon fault removal and power cycling Thermal Management


• Innovative air distribution system with separate power supply cooling fans


• Variable or Full Speed fan operation via front panel switch


• Noise levels: 41.4 dBA (low speed), 54.9 dBA (high speed) at 1 meter Monitoring & Diagnostics


• Front panel diagnostics connector for local or remote monitoring of power supply voltages, temperatures, and fan operation

Key Features

• High power density with excellent back pressure performance for dense module configurations


• Quiet, efficient cooling with minimal airflow restrictions


• All seven output voltages protected against fault conditions


• VXI Specification compliance with injector surface rails for module insertion

Typical Applications Automated test systems requiring multi-module VXI instrument configurations with stable, protected power delivery and thermal performance in production environments.

Compatibility & Integration Designed for VXI-compliant instrument modules. Accepts standard C-size VXI modules across 13 slots with independent rail-based power distribution.