The Keysight U9403A is a 5U rack-mounted in-circuit test (ICT) system designed to deliver analog and digital testing capabilities for printed circuit board assemblies within production environments. This 630 mm wide instrument supports up to 512 test nodes with a true 1:1 per-pin programmable architecture and 500 mA driving capability, enabling vectorless testing through VTEP v2.0 and boundary scan technology per IEEE1149 standards. The system operates standalone or in parallel with internal or external sequencers, offering per-pin programmable digital tests, on-board device programming, DUT power control, and complete discharge features. SCPI command support via VISA-based test sequencers enables integration into existing test racks.
Technical Specifications
• Form factor: 5U, 19-inch rack-mount
• System width: 630 mm
• Maximum node count: 512
• Maximum parallel testing: 1
• Per-pin architecture: 1:1 programmable with 500 mA driving capability
• Fixture actuation: Press down
• Operation modes: Standalone and parallel in-circuit test
– Key Features
• VTEP (Vectorless Test Equipment Protocol) v2.0 for testing without direct physical access
• IEEE1149 boundary scan for in-system programming and integrated circuit testing
• Cover-Extend Technology to enhance test coverage on devices without direct physical access
• Un-muxed per-pin programmable digital engine for flexible test development
• DUT power supply control with complete discharge capabilities
• Device-level failure diagnostics for improved board repairability
• SCPI command support for standard test sequencer integration
– Typical Applications
The U9403A serves manufacturers performing analog and digital in-circuit diagnostics, boards requiring vectorless testing approaches, and production environments where fixture cost reduction and test point minimization are priorities.
– Compatibility & Integration
The U9403A is part of the Keysight Medalist i1000D in-circuit test system family and integrates with instruments such as the Keysight x1149 to expand test coverage across mixed-signal PCBAs.
