WESTFORD, MA--September 3, 2002--Teradyne's [NYSE: TER] Assembly Test Division, a global leader in electronics testing and production solutions announced today a new order for Beijing International Switching System Corporation Ltd. (BISC), a division of Siemens JV. BISC will take delivery of two Teradyne Optima 7300 post-reflow automated optical inspection (AOI) systems, the first of their kind to be used in China.

Mr. Jia Zhi Yun, Department Manager for Industrial Engineering at Beijing International Switching Systems, was responsible for evaluation and selection of the new solution. "We have taken one month to do on site evaluations for the post reflow AOI, the significant factors in our selection of Teradyne was the better performance of the machine and the stronger local support provided over other vendors," said Mr. Jia.

"This is a significant order for Teradyne as we continue to develop close relationships with local manufacturers in China," said Patrick Tong, General Manager of Teradyne Asia. "The Optima 7300 proved both competitive and technically superior to other possible systems, with higher fault coverage, lower false call rate. Higher speed and better repeatability were quoted as the main technical advantages for BISC."

About the Optima 7000-Series

The Optima 7000-Series is based on advanced, patented lighting, camera, software, and mechanics. The result is highly reliable, repeatable, and accurate optical inspection, which can operate at line speed and is ideal for in-line production. The Optima 7300 features a new, high-speed x-y positioning gantry and new image detection and acquisition architecture that complete the scan, diagnosis, and board handling cycle at greater than twice the speed or more of competing alternatives. The system is designed for very high-volume manufacturers who have extreme manufacturing cycle requirements, delivering PCB inspection rates of 7 square inches per second while providing 100% coverage for solder and component defects.

About Beijing International Switching Systems Corporation

Beijing International Switching System Corporation Limited (BISC) is a high-tech joint venture enterprise between SIEMENS AG and four Chinese enterprises. The company focuses on the manufacturing and marketing of EWSD switching systems and data network solutions, including switching products, access products, network management products, Surpass system for convergence of voice and data services, and system integration solutions for the fast developing China telecommunications market. BISC had been formally recognised as one of the 500 Largest Industry Enterprises in China, Top 100 Enterprises of Electronic Industry, and Top Ten Foreign Invested Industrial Enterprises of the Beijing Municipality.

About Teradyne

Teradyne (NYSE: TER) is the world's largest supplier of automatic test equipment and is also a leading supplier of high performance interconnection systems. Teradyne's test products are used by manufacturers of semiconductors, circuit assemblies, voice and broadband telephone networks. Teradyne's backplane assemblies and high-density connectors are used by manufacturers of communications and computing systems central to building networking infrastructure. The company had sales of $1.4 billion in 2001 and currently employs about 8000 people worldwide. For more information, visit www.teradyne.com.

CONTACT:
Mark Stygles
Teradyne Marketing Communications, North America
Westford, MA USA 01886-0033
Tel: 978.589.7425
mark.stygles@teradyne.com
or
Renate Fritz
Marketing Communications, Europe & Asia
Teradyne GmbH, Assembly Test Division
Tel: 49.89.962.85.303
Ismaning, Germany
renate.fritz@teradyne.com