Agilent/Keysight E8408A

The Agilent/Keysight E8408A is a C-size, 4-slot VXI mainframe engineered for demanding test and measurement applications requiring compact form factor and field portability. This fully VXIbus Specification Rev 1.4-compliant platform delivers 175 W of usable power across its four slots, with integrated thermal management and comprehensive mainframe monitoring for extended operational reliability.

– Technical Specifications

Chassis & Power Distribution
• VXI mainframe: C-size, 4 slots
• Usable power: 175 W (0–40°C); derates to 150 W (40–50°C) and 125 W (50–55°C)
• Input voltage: 90–264 Vac
• Power supply protection: over-temperature, over-voltage, short-to-ground, short-to-other-output

Backplane Voltages
• +5V: +4.875V to +5.125V
• +12V: +11.64V to +12.6V
• −12V: −12.6V to −11.64V
• +24V: +23.28V to +25.2V
• −24V: −25.2V to −23.28V
• −5.2V: −5.46V to −5.044V
• −2V: −2.1V to −1.9V

Thermal Management
• Two-speed fan with full-speed automatic and variable-speed temperature-compensated modes
• Rear-panel airflow entry; left-side exhaust (horizontal orientation)
• Rack mounting clearance: 50 mm rear and left side

Backplane Architecture
• Solid-state automatic daisy-chain jumpering for VMEbus grant and interrupt acknowledge lines
• Full differential CLK10 distribution for minimized jitter and skew
• Surface-mount construction for signal integrity
• SYSRESET and ACFAIL generation per VMEbus and VXIbus specifications

– Key Features

• Compact 3U height (133.3 mm) with lightweight design optimized for portable and space-constrained installations
• Real-time front-panel monitoring: power supply voltages, temperature, and fan status
• Dual-mode fan control switches: Full Speed and Variable Speed operation
• Rear-accessible power supply and cooling fan for in-rack maintenance without chassis removal
• Surface-mount backplane design enhances signal performance and reliability

– Physical Specifications

• Width: 362 mm (14.3 in.)
• Depth: 540 mm (21.3 in.)
• Height: 133.3 mm (5.25 in.)
• Weight: 8 kg

– Compatibility & Integration

Fully compliant with VXIbus Specification Rev 1.4 and VMEbus standards. Supports any VXI module within the 175 W power envelope and thermal limits across all four slots.