Vi-ta [vee-tuh]

Critical Embedded Systems
are everywhere . . .

Become a leader in setting new directions!

VNX Discussion Forum
Requires LinkedIn account and registration.

 VNX Forum


Quick Navigation

VNX Marketing Alliance

VNX Marketing Alliance

High performance embedded computing applications have been driving the computer industry to increasingly smaller and more rugged systems. VITA 74 NanoX was developed to specifically address the needs of architects designing small embedded computing platforms for those rugged operating environment applications.


The purpose of the VNX Marketing Alliance is to establish an ecosystem of interested parties that promotes and creates name recognition, as well as grow adoption of the VITA 74 NanoX Small Form Factor specification and technology. The alliance is responsible for educating, training, and promoting the capabilities of the VITA 74 NanoX Small Form Factor specification and informing the broader community and media.


The VNX Marketing Alliance is focused on the advancement of the VITA 74 NanoX Small Form Factor family of technology and other related activities on the roadmap. The VNX Marketing Alliance will promulgate the specifications emerging from the VITA Standards Organization (VSO) Working Groups to develop a relevant ecosystem.

Companies that develop VNX products are encouraged to contact VITA to join the VNX Marketing Alliance.

VNX Overview

VITA 74 NanoX Small Form Factor defines both mechanical and electrical specifications to implement a small form factor system. The specification addresses a need for a standardized approach to small-scale systems to be used in a range of applications. The specification encourages multiple vendors to supply components to be used in small systems at various levels, including modules, backplanes, enclosures and completed solutions. The goal is to allow vendor implementation flexibility at the same time as ensuring component interoperability.

In order to take advantage of previous work, the VITA 46 specification has been used as a basis for VITA 74. The specification takes many of the conventions and leverages the signal definitions into a small form factor environment. The standard adopts the signal mappings, introducing a new high-speed low cost connector and reduces the number of serial fabric options. The result is a specification that has two serial fabrics, Ethernet and PCI Express. In the interest of keeping the system as simple to implement as possible, a single CPU root node is specified.

The base standard gives details on the mechanical implementation of the system plug-in modules. Two types are defined, 19mm and 12.5mm. Each type addresses a different set of functions. Fabrication of the module enclosure is left to the vendor. In addition, details are provided for the module base carrier board, including connector location, assembly hole locations and component keep-out. The 19mm module has room for a two-board stack. The inter-board connector selection is outside the scope of this specification.

Finally, even though the standard doesn’t specify backplane implementation, details are provided as part of a 4-slot backplane. This can be used as a design starting point for doing a derivative implementation, as defined by the particular application. Also, an example chassis with detail dimensions is given as a starting point for a chassis design. The chassis example can be reproduced in whole or modified a required depending on the requirements.


VNX Marketing Alliance Announces Formation October 29, 2014


VITA-74/ VNX System Prototyping and Development Considerations



VITA 74: Small, Conduction-Cooled, Rugged and Modular

Wayne McGee, CES-Creative Electronic Systems, October 2013

VITA Technologies
Small Form Factor Systems Approaches Vie for Military Mindshare
Jeff Child, Editor-in-Chief, November 2012
What's new at VITA: Hot specs include VPX, VITA 73/74/75 SFFs
VITA small form factors get rugged


New VITA 74 Standards for UV Computer Systems, Phillippe Weber, Themis Computer

Comments on this website? Email us at
Copyright © 1996-2017, VITA. All rights reserved.
VITA Copyright and Use Notice

only search VITA site
Powered by Wild Apricot Membership Software