Agilent/Keysight E2251A

The Agilent/Keysight E2251A is a C-size, single-slot VXI M-Module Carrier that provides cost-effective integration of specialized functionality into VXIbus systems. It accommodates up to six M-Modules, each with independent logical addressing, enabling tailored system configurations that optimize both cost and performance. The carrier manages the electrical and mechanical interface between the VXIbus backplane and installed M-Modules, handling VXI register configuration, I/O space and memory access, and interrupt handling.

Fully programmable interrupts are available for each M-Module.

Technical Specifications

• Module Type: M-Module Carrier


• Form Factor: C-Size, 1-Slot


• VXI Specification Compliance: Revision 1.4


• M-Module Capacity: Up to six M-Modules per carrier (five recommended for optimal cabling access)


• Addressing: Independent logical address per M-Module


• Backplane Interface: P1/2 connectors providing VXIbus backplane access


• Register Management: VXI register configuration, I/O space, and memory access


• Interrupt Handling: Fully programmable per M-Module

Key Features

• Cost-effective addition of modular functionality blocks


• Flexible M-Module combinations to match application requirements


• Independent logical addressing for each installed module


• Full VXI Specification Revision 1.4 compliance


• Programmable interrupt capability per module

Compatibility & Integration The E2251A supports a wide range of Agilent/Keysight M-Modules including the E2259A Double-Wide Breadboard, E2261A Quad RS-232 Interface, E2270A 16-Channel Form A Switch, E2271A 4×4 Matrix Switch, E2272A Dual 8×1 Relay Multiplexer, E2273A 8-Channel Form C Switch, E2274A 4-Channel Form C Power Relay, E2290A 16-Bit Digital I/O, and E2291A 16-Channel Isolated Digital Output modules. When paired with the Agilent E1406A Command Module, the carrier supports up to 31 M-Modules. Embedded controllers such as the Agilent E8491B and MXIbus solutions enable configurations supporting up to 255 M-Modules. VXIplug&play support is provided for Windows 95/NT and HP-UX frameworks.