Agilent/Keysight U4002A

The Keysight U4002A is a 2-slot AXIe chassis that is a modular, scalable platform for high-density test and measurement systems. This half-width instrument accommodates application-specific blades alongside an integrated chassis manager, enabling portable deployments or lab installations with optional rackmount brackets. The architecture supports system expansion through multi-chassis networking and centralized control, making it ideal for complex testing workflows that demand instrumentation.

Technical Specifications

• Slot Configuration: 2 total slots for application blades; bottom half-width slot dedicated to chassis manager


• Backplane Architecture: AXIe 1.0 compliant with Gigabit Ethernet switching, PCIe Gen 2 x4 lanes to each module slot, secondary PCIe data fabric, distributed Gigabit Ethernet LAN per slot, and 62-pair local bus for adjacent module signaling and data transfer


• Power Distribution: Managed across all blades through the backplane -# Chassis Manager (U4002-00101)


• Blade insertion tracking and blade power management


• Thermal monitoring with variable-speed fan control


• Blade sensor monitoring and failure reporting to system log


• Gigabit Ethernet switching for inter-chassis communication


• Timing synchronization via Agilent Test Bus with internal or external clock sources


• PCIe (x4, Gen1/Gen2 compliant) interface for external system controller connection


• USB availability (not supported in initial release) -# Connectivity Interfaces


• Gigabit Ethernet: Backplane interface with front panel RJ45 LAN connection; functions as network switch


• PCIe: Distributed Gen 2 fabric (x4 lanes per slot) from Embedded System Module to application blades


• Synchronization: Agilent Test Bus for multi-chassis timing; external trigger and clock inputs supported

Key Features

• Modular AXIe platform combining VXIbus, LXI, and PXI standard integration


• Enhanced timing, triggering, and module-to-module data movement capabilities


• Scalable multi-chassis architecture with centralized management


• Integrated thermal and power management


• PCIe Gen 2 high-speed data fabric with distributed Ethernet

Typical Applications

• Portable test systems


• Laboratory and field measurement deployments


• Complex signal processing and data acquisition


• Multi-instrument synchronization and control

Compatibility & Integration The U4002A integrates with AXIe-compliant application blades and supports external system controllers via PCIe. Multi-chassis systems connect through Gigabit Ethernet networking with centralized timing via the Agilent Test Bus, enabling distributed test architectures.