The Keysight/Agilent/HP E1401B is a 13-slot C-size VXI mainframe engineered for high-density instrumentation and demanding data acquisition systems. This high-power mainframe delivers 900 W output at 25°C ambient, scaling to 800 W at 40°C and 650 W at 55°C, with peak power availability reaching 1690 W usable capacity. It complies with VXIbus Specification Rev. 1.4 and VMEbus System Specification Rev. C.1, supporting VXIplug&play configurations.
Technical Specifications
Power Input & Distribution
• Input voltage: 100–240 VAC ±10% (50–60 Hz), 400 Hz operation at 100–120 VAC ±10%, or 100–370 VDC
• Inrush current: 40 A maximum (EN-60555-2 compliant)
• 15 A fast-blow fuse for all line voltages
• Power factor corrected input section
DC Output Voltages & Peak Currents at 40°C/55°C
• +5V: 65 A / 60 A peak DC; 70–80 A shutdown threshold
• +12V: 14 A / 12 A peak DC; 14–18 A shutdown threshold
• -12V: 14 A / 12 A peak DC; 14–18 A shutdown threshold
• +24V: 14 A / 12 A peak DC; 15–19 A shutdown threshold
• -24V: 12 A / 10 A peak DC; 12–16 A shutdown threshold
• -5.2V: 65 A / 60 A peak DC; 70–80 A shutdown threshold
• -2V: 35 A / 30 A peak DC; 35–41 A shutdown threshold
– Key Features
• Automatic bus grant sensing bypasses empty slots for optimized slot utilization
• Variable-speed fan cooling adapts to thermal load
• Over-temperature, over-voltage, over-current, and short-circuit protection across all outputs
• Front-panel power switch with lighted indicator; rear-panel remote operation connector
• Power supply and fan modules field-serviceable from rear panel with 5-minute MTTR
– Compatibility & Integration
Full VXIbus Rev. 1.4 and VMEbus Rev. C.1 compliance enables integration with standard VXI instrumentation. The mainframe accepts high-density C-size module populations and maintains thermal stability across extended ambient temperature ranges from 25°C to 55°C.
