Welcome to the Keysight IO Libraries Suite

Keysight IO Libraries Suite (IOLS) is Keysight's integrated solution containing connectivity libraries and tools that speed up connection and control of your instruments.
Refer to What's New For Windows Users to explore the new features available in IO Libraries Suite 2025 Update 1.

Introductory Topics

Especially if you are new to the product, you may want to read:

About Keysight IO Libraries - A table of the component libraries and utilities, which of them are supported in Windows and Linux, and where to find help for each component.
Users needing an older version of the software for compatibility with older instruments, see the revision matrix.
Starting Utilities and Using I/O Control - How to use IO Control as a shortcut for starting utilities and accessing documentation, and how to start utilities not found in IO Control.

Getting Connected

After reviewing introductory information, to use the IO Libraries Suite, start by connecting and communicating with your instruments. See the Start Here: Connectivity Guide in the Connection Expert section of this help file.

Documentation Notes

Warranty

THE MATERIAL CONTAINED IN THIS DOCUMENT IS PROVIDED "AS IS," AND IS SUBJECT TO BEING CHANGED, WITHOUT NOTICE, IN FUTURE EDITIONS. FURTHER, TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, KEYSIGHT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED WITH REGARD TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. KEYSIGHT SHALL NOT BE LIABLE FOR ERRORS OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING, USE, OR PERFORMANCE OF THIS DOCUMENT OR ANY INFORMATION CONTAINED HEREIN. SHOULD KEYSIGHT AND THE USER HAVE A SEPARATE WRITTEN AGREEMENT WITH WARRANTY TERMS COVERING THE MATERIAL IN THIS DOCUMENT THAT CONFLICT WITH THESE TERMS, THE WARRANTY TERMS IN THE SEPARATE AGREEMENT WILL CONTROL.

Technology License

The hardware and/or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license.

Restricted Rights Legend

If software is for use in the performance of a U.S. Government prime contract or subcontract, Software is delivered and licensed as “Commercial computer software” as defined in DFAR 252.227-7014 (June 1995), or as a “commercial item” as defined in FAR 2.101(a) or as “Restricted computer software” as defined in FAR 52.227-19 (June 1987) or any equivalent agency regulation or contract clause. Use, duplication or disclosure of Software is subject to Keysight Technologies’ standard commercial license terms, and non-DOD Departments and Agencies of the U.S. Government will receive no greater than Restricted Rights as defined in FAR 52.227-19(c)(1-2) (June 1987). U.S. Government users will receive no greater than Limited Rights as defined in FAR 52.227-14 (June 1987) or DFAR 252.227-7015 (b)(2) (November 1995), as applicable in any technical data.

Safety Notices

Trademarks

PCI-SIG®, PCIe® and the PCI Express® are US registered trademarks and/or service marks of PCI-SIG.

CompactPCI® and the CompactPCI logo are registered US trademarks of the PCI Industrial Computer Manufacturers Group.

Component Copyright Information

The National Instruments (NI) object file ni4882.obj is used by Keysight's 64-bit gpib-32.dll to forward NI-488.2 API calls to NI GPIB cards.