Keysight / Agilent / HP E1406A VXI GPIB Command Module

The Keysight E1406A is a C-size, single-slot VXI GPIB Command Module that serves as the system controller and primary interface between VXI backplanes and external GPIB instruments. It functions as both a VMEbus system controller and IEEE-488 to VXIbus gateway, enabling unified command and control across mixed VXI and GPIB instrument ecosystems. The module provides Slot 0 and Resource Manager functions, with onboard MXIbus Resource Manager support for VXIbus extensions in multi-mainframe configurations.

## Technical Specifications

• **Form Factor**: C-size, 1-slot module
• **Memory**: Up to 2 MB RAM; 1.75 MB FLASH (maximum) for downloadable drivers
• **Interfaces**: GPIB (IEEE-488), RS-232
• **Programming Language**: SCPI (Standard Commands for Programmable Instruments)
• **Clock Synchronization**: 10 MHz VXI backplane clock; supports external TTL signal synchronization
• **Data Transfer**: High-throughput performance via MXIbus protocol

## Key Features

• Acts as VMEbus System Controller with Slot 0 Commander and Resource Manager functions
• Translates SCPI commands for register-based instruments, enabling programming equivalent to message-based devices
• Flexible triggering and clock interfacing for precise synchronization across the VXI backplane
• MXIbus Resource Manager extends VXIbus capability across multiple mainframes
• Flash-based driver storage supports programmable register-based device operation

## Typical Applications

• Multi-instrument test systems combining VXI and GPIB devices
• Distributed measurement and control systems requiring centralized command authority
• Automated test equipment (ATE) environments with legacy GPIB instrument integration
• Multi-mainframe VXI configurations requiring extended system management

## Compatibility & Integration

The E1406A communicates with message-based VXI modules from any manufacturer and integrates Keysight register-based devices through SCPI command translation. It operates within standard VXI backplane architectures and supports systems utilizing SCPI programming protocols. The module’s dual-interface design eliminates the need for separate GPIB controllers while maintaining full VMEbus system command authority.