Keysight / Agilent / HP E8402A C-Size 13-Slot VXI Mainframe

The Keysight E8402A is a C-Size 13-slot VXI mainframe engineered for multi-module test systems requiring flexible architecture and thermal management. It delivers 550W of usable power across seven VXI output voltages, supports native C-Size modules with optional A- or B-Size adapter compatibility, and features variable-speed fan control for operation across wide ambient temperature ranges. The mainframe integrates closed-loop cooling with separate power supply cooling, a color front-panel display for real-time voltage and temperature monitoring, and diagnostic instrumentation for power supply and thermal tracking.

– Technical Specifications

Chassis & Power Distribution
• C-Size, 13-slot VXI mainframe accepting C-Size modules
• A- or B-Size module accommodation via optional adapters (e.g., HP E1403/7)
• Usable power output: 550W across seven VXI voltage rails
• Input voltage: 90 VAC to 264 VAC, 47 Hz to 66 Hz; 360 Hz to 440 Hz at 90 VAC to 132 VAC; 100 VDC to 270 VDC
• Inrush current: 40A maximum
• Fuse protection: 250V, 15A, fast blow

Thermal Management
• Variable-speed impeller fan with Full Speed and Variable Speed modes
• Separate power supply cooling fan(s)
• Rear-inlet airflow with side exhaust
• Back pressure optimized for high-density module configurations

System Monitoring & Diagnostics
• Color front-panel display with real-time parameter readout
• Backplane voltage monitoring
• Per-slot temperature and exhaust air temperature tracking
• Power supply voltage, current, and temperature measurement
• Fan and impeller status indication
• Closed-loop cooling control with exhaust temperature trending
• Front-panel diagnostic connector for local and remote monitoring
• Stripcharts, histograms, and system history logging

– Key Features

• Dual fan-speed modes reduce acoustic noise while maintaining thermal margins
• Closed-loop temperature feedback automatically adjusts cooling to module power dissipation
• Comprehensive voltage and thermal visibility via front panel and remote diagnostics
• Separate power supply cooling ensures independent thermal management
• System history logging enables trending analysis and predictive maintenance

– Compatibility & Integration

Accepts all standard C-Size VXI modules. A- and B-Size modules integrate via optional mechanical adapters. Seven independent voltage rails supply mixed-signal and RF module populations.