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USB Mainframes & Controllers

The Keysight U2781A USB modular instrument chassis is a high-performance 4U high chassis that comes with a 200 W universal AC power supply and a built-in protection circuit. This portable chassis can house up to six Keysight USB modular products. The U2781A targets a wide range of applications in both industrial and scientific environments in the research and development (R&D), design-validation, and manufacturing fields. The primary advantage of this chassis is its synchronization capability between modules. This can help you to lower your cost of testing and accelerate your test system integration and development.

The U2781A is equipped with an internal 10 MHz reference clock for each module slot. There are two temperature sensors to monitor the internal temperature and a built-in fan to maintain the internal temperature. The trigger bus enables the USB modular products to trigger signals to each other.

The chassis supports the following USB modular products:

Giving users more flexibility, the U2781A is compatible with a wide range of application development environments such as Keysight VEE, MATLAB®, NI LabVIEW and Microsoft® Visual Studio®.

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PXI & AXIe Instruments, Software, Reference Solutions and Services - Brochure
This brochure provides an overview of Keysight's PXI & AXIe instrument, software, solutions and services offering.

Brochure 2020-06-02

PDF PDF
USB Modular Products – Safety & EMC Compliance Updates
The information in this addendum is provided to improve the contents of the Keysight USB Modular Products user manuals pertaining to the safety and EMC compliance updates after the manual print date.

User Manual 2016-06-03

PDF PDF 620 KB
U2781A Quick Start Guide
Quick Start Guide for the U2781A USB Modular Instrument Chassis.

Quick Start Guide 2015-02-01

USB Modular Products Manual Update
The information in this addendum is provided to improve the contents of the Keysight USB Modular Products user manuals pertaining to the product changes after the manual print date. Please retain this update sheet.

User Manual 2014-11-01

PDF PDF 695 KB
U2781A User’s Guide
Contains a description of the features and functions of the instrument, including programming information, application examples, and technical specifications.

User Manual 2014-11-01

USB Modular Products Data Sheet
Technical specifications and information for the USB Modular Products.

Data Sheet 2014-08-02

PDF PDF 6.87 MB
PXI Product on YouTube
PXI Product on YouTube

Demo 2011-12-22

Easily arrange and rearrange your tests - Brochure
Easily arrange and rearrange your tests - Keysight’s USB modular instruments and USB data acquisition modules make it possible.

Brochure 2009-01-15

PDF PDF 1.18 MB
USB Modular “Put a Bench in Your Bag” Brochure
This brochure highlights the essential tools for those who are always on the move. It includes product key features, specifications and other related products.

Brochure 2008-08-13

PDF PDF 588 KB