Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Status Report for First Quarter, FY92 (1 October Through 31 December 1991)



Howard Bloom


In the first quarter of '92, much of the activity of the National PDES Testbed revolved around two major events: CALS Expo '91 and the joint meeting of IPO (IGES/PDES Organization) and ISO (International Organization of Standardization). Together, these events accounted for more that half of nearly 30 Testbed-funded trips.

At these events, Testbed staff enhanced their coordination with the STEP (STandard for the Exchange of Product model data) community and took several leads in charting the course of STEP's development. Testbed staff were elected to chair three STEP-related working groups or committees. Under the Testbed project AP for Inspection Planning, a work-sharing agreement was informally established with counterparts from Europe's ESPRIT program.

Nine technical thrusts of the PDES, Inc. consortium were supported, including electrical/electronics standards. The Testbed Hotline fielded 20 calls, while the STEP On- Line Information Service was used to transmit more than 900 files to users.

A prototype STEP Data Access Interface (SDAI) implementation was demonstrated, while a major upgrade of the Fed-X compiler was related for shipping.

Five technical reports were issued. Through tutorials and technical sessions, Testbed staff played prominent educational roles at CALS Expo '91.

NIST Interagency/Internal Report (NISTIR) - 4787
Report Number


IPO, IGES/PDES, ISO, STEP, STandard for the Exchange of Product model data, Data Access Interface, SDAI


Bloom, H. (1992), Status Report for First Quarter, FY92 (1 October Through 31 December 1991), NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD (Accessed May 23, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created November 1, 1992, Updated October 16, 2008