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Trimble Inc.
935 Stewart Drive
Post Office Box 3642
Sunnyvale, CA 94085
1.408.481.8000 phone
1.408.481.7781 fax


Trimble Introduces Powerful GPS Module Optimized for
Timing Applications

GENEVA, Oct. 11, 1999 -- Trimble (NASDAQ:TRMB) introduced today its ACE UTC™ GPS Module. The ACE UTC is the company's first board-level receiver optimized for precision timing applications. The receiver integrates Trimble's next-generation GPS timing technology into the popular ACE form factor (1.83" x 3.25" x 0.45"), which is slightly smaller than a business card.
The announcement was made at the World Telecom '99 Exhibition.
"ACE UTC GPS module brings to the telecom industry the most advanced, precise and reliable GPS timing source available," said Peter Kuykendall, Trimble's product manager for timing and synchronization applications. "The ACE UTC reflects our design philosophy of making integration as easy for the customer as possible. Our research and development efforts have enabled the company to provide integrators with a convenient plug-and-play module that increases timing accuracy. Our goal is to provide top performance at an exceptionally competitive price. It's the top timing choice for both performance and value."
Ideal for disciplining quartz, rubidium, and cesium oscillators in a variety of precision timing applications, the ACE UTC GPS module delivers a 1PPS output accurate to 50 nanoseconds (1 sigma) of UTC. The module uses Trimble's 8-channel technology, T-RAIM (Time-Receiver Autonomous Integrity Monitoring) and an automatic self-survey combined with over-determined clock mode, which reduces the effects of selective availability (SA).
The ACE UTC provides top performance and maximum reliability. Trimble's advanced technology integrates a 32-bit microprocessor with a digital GPS chip, providing high signal acquisition for enhanced performance.
Easy-to-integrate and flexible, the ACE UTC module can be user-programmed for both standard and advanced use. For standard installations, the ACE UTC can be plugged in and left alone. The module will do an auto-survey and reports the most commonly used time packets. The unit can also be programmed for more advanced use, including reporting on data such as 1 PPS quantization error or alarm status, or satellite health.
The module uses the powerful Trimble Standard Interface protocol (TSIP) binary data protocol for maximum data and control over the GPS receiver. TSIP commands are used to configure and store the configuration and message selections in nonvolatile memory. The module uses a TTL serial data I/O port for communication.
Development kits include: the ACE UTC GPS module in a durable metal enclosure, a GPS antenna, an AC power adapter, a serial interface cable, a reference manual, and GPS toolkit software for communication with the GPS module.
The ACE UTC is available in first quarter 2000.
About Trimble GPS Timing
With the expansion of data and communications networks, Trimble GPS is keeping the world in sync. Trimble offers precise time and frequency products for CDMA, TDMA, GSM, paging, Wireless Local Loop and 3G applications. Twenty years of experience allow Trimble to take GPS receivers and disciplined clocks to higher levels of integration, providing a cost benefit to customers.
About Trimble
Trimble is a world leader in designing and developing innovative products enabled by GPS technology. The company provides end-user and OEM solutions for diverse applications including surveying, mapping/GIS, agriculture, construction, mining, military, commercial aviation, automotive, vehicle tracking and timing. Founded in 1978, Trimble now holds more than 200 U.S. patents on GPS and related technology, with over 180 additional patents pending. Located in Sunnyvale, Calif., Trimble has been adding value to GPS since 1984.
Media Contact:   LeaAnn McNabb of Trimble: 408-481-7808

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