NDLI: Setting up and using a multi-computer VXIbus system

Content Provider	IEEE Xplore Digital Library
Author	Wright, M.
Copyright Year	1997
Description	Author affiliation: CACI, San Antonio, TX, USA (Wright, M.)
Abstract	VXI has matured into a flexible bus architecture with which to develop various types of instrumentation systems. More and more systems are being developed that require multiple chassis with dozens of instruments, each of which may perform a distinct yet important function to the system. This can place a tremendous burden on the system controller, especially if this same controller has to perform intensive graphic display updates, writes to the hard disk, printing functions, or other I/O Tasks. Modern computers in general, and PC-based computers in particular, have advanced to the point where some of this burden can be overcome by the sheer power of the processor. However, there are still many systems that would benefit from using a multi-computer approach. This paper details the multi-computer approach used in the VXIbased system that CACI developed for the Air Force. The system, the Engine Test/Trim Automated System II (ETTAS II) is designed to test all Air Force jet engines. The paper discusses how to integrate multiple computers in a VXI-based system, including discussions on: setting up the computers, selecting register-based versus message-based computers, setting up and using shared-memory, defining and separating tasks for each computer. The shared memory discussion talks about different ways to structure the shared memory, including setting up a system-level "Current-Value Table" (CVT) for all instruments, as well as how other devices, including another computer can access the shared memory space. The paper shows how Commercial Off-the-Shelf(COTS) software products NI-VXI LabVIEW; and NI-VISA (National Instruments) can be used to satisfy all these requirements. The paper also shows how the multi-computer approach can be cost-effective in many cases.
Starting Page	568
Ending Page	574
File Size	616573
Page Count	7
File Format	PDF
ISBN	0780341627
DOI	10.1109/AUTEST.1997.633677
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-09-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Instruments Military computing Control systems Automatic testing System testing Computer graphics Computer displays Hard disks Printing Engines
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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