The Keysight E8408A is a C-Size 4-slot VXI mainframe engineered for automated test equipment (ATE) integration. This compact platform hosts VXI modules with minimal footprint and weight, ideal for bench, field service, and rack-mounted deployments. Option 001 increases -5.2V source current capacity, enabling support for high-current VXI modules such as digitizers. The mainframe delivers 175 W of usable power and maintains full VXIbus Rev 1.4 and VMEbus Rev C.1 compliance.
Technical Specifications
• Form Factor: C-Size
• Slot Configuration: 4 slots
• Power Output: 175 watts usable
• VXIbus Compliance: Rev 1.4; VMEbus System Specification Rev C.1
• Option 001: Enhanced -5.2V source current for high-demand module support
• Backplane Architecture: Solid-state automatic daisy-chain jumpering for VMEbus grant and interrupt acknowledge lines; full differential CLK10 distribution with minimized jitter and skew; surface-mount stripline design
– Key Features
• Thermal Management: Two-speed cooling fan with Variable (temperature-controlled) and Full Speed modes selectable from front panel; rear-inlet airflow design compatible with stacking and rack mounting; minimum 1 inch (25.4 mm) clearance recommended at back and sides
• Monitoring & Status: Front panel indicator lights for power supply, fan status, and internal temperature; SYSRESET and ACFAIL generation on backplane per VXI specification
• Configuration Options: Standard, Portable (protective bumpers and carrying handle), and Rack Mount available; optional Rack Mount/Cable Route Adapter Kits and Rack Slide or Support Rail Kits
• Physical Advantages: Compact size and light weight enable field portability and data acquisition applications
– Typical Applications
• Automated test equipment (ATE) systems
• Field service and portable measurement stations
• Data acquisition platforms
• Multi-module VXI instrument integration
– Compatibility & Integration
The E8408A integrates VXI modules requiring standardized VMEbus and VXIbus interfaces. Rack integration is supported through optional mounting hardware. Airflow design accommodates both standalone and enclosed rack environments without obstruction.

















