The Agilent/Keysight E1405A is a VXI Command Module that functions as the Slot 0 controller and Resource Manager for VXIbus mainframe systems. It establishes the foundational control layer required for VXI system operation, managing communication protocols, instrument synchronization, and resource configuration across the VXIbus architecture.
Technical Specifications
• Product Type: VXI Command Module
• Form Factor: C-size, 1U (1 Unit high)
• Slot Assignment: Slot 0
• Primary Role: Slot 0 controller and Resource Manager for VXI mainframes
– Key Features
• VXIbus Management: Manages VXIbus communication protocols and arbitration between modules
• Host Controller Interface: Provides essential communication pathways between host computer systems and the VXI mainframe
• Multi-Protocol Support: Implements HP-IB (IEEE-488) for instrument communication and RS-232 for serial connectivity
• Timing Synchronization: Integrates clock input and clock output interfaces for system-wide timing coordination
• Resource Configuration: Configures and manages VXI modules during power-up and reset sequences
• Module Support: Enables control of both message-based and register-based VXI instruments
– Operational Capabilities
The E1405A coordinates data acquisition and control operations by synchronizing timing across distributed VXI instruments. Its Resource Manager function handles module enumeration and configuration during system initialization, ensuring proper VXIbus hierarchy and communication flow. The dual clock interface supports both input synchronization from external timing sources and output distribution to slave modules requiring phase-locked operation.
– Compatibility & Integration
The module integrates within any VXIbus mainframe supporting C-size, 1U slot configurations. It manages communication with all message-based and register-based VXI instruments, functioning as the mandatory Slot 0 controller required by VXI system architecture. The HP-IB and RS-232 interfaces enable integration with legacy and modern test systems, while the VXIbus interface maintains protocol compliance across heterogeneous instrument populations.


















