Datum Announces New Timing Solution for Cellular Base Stations.Business Editors & High-Tech Writers IRVINE, Calif.--(BUSINESS WIRE)--Aug. 28, 2001 StarLoc II Plus(tm) Enhanced Timing Device Retains Accuracy Up to Six Times Longer than Competing Technologies and Never Requires Calibration Datum The singular form of data; for example, one datum. It is rarely used, and data, its plural form, is commonly used for both singular and plural. Inc., (Nasdaq:DATM DATM Dummy Air Training Missile DATM DISA ATM Network DATM Data Mode (Naval data analysis) DATM Drums Along the Mohawk (Rome, NY Drum Corp International Competition) DATM Derby Area Transport Model ), a leading global supplier of timing, synchronization and frequency solutions, today announced availability of the StarLoc II Plus(tm). The StarLoc II Plus is a small, low-cost, low-power-requirement solution that provides the synchronization required by wireless base stations, optical network nodes and high-speed digital networks. Datum's StarLoc II Plus combines GPS receiver technology with the company's Rubidium rubidium (r  bĭd`ēəm), metallic chemical element; symbol Rb; at. no. 37; at. wt. 85.4678; m.p. 38.89°C;; b.p. 686°C;; sp. gr. 1.53 at 20°C;; valence +1. oscillator oscillatorMechanical or electronic device that produces a back-and-forth periodic motion. A pendulum is a simple mechanical oscillator that swings with a constant amplitude, requiring the addition of energy at each swing only to compensate for the energy lost because of air to provide Stratum 1-level timing, the highest level of precision available for synchronization. In addition, the StarLoc II Plus offers a holdover time that ensures carriers can provide uninterrupted service to their cellular customers. "Holdover time is imperative and refers to how long a timing source can retain its accuracy without its GPS signal," said Datum-Irvine President Mike Patrick. "The StarLoc II Plus offers continuous, long-term holdover, providing carriers with a solution that keeps their networks producing maximum revenue even before field engineers are dispatched to restore the GPS timing signal to a site. The best crystal oscillator can only provide a fraction of that performance." Using Datum's proprietary Snapshot(tm) technology, a network of StarLoc II Plus units is able to lock system time to within 20 nanoseconds of each other. After a quick initial survey, the system requires only one visible GPS satellite to maintain accuracy. This is especially important in a crowded urban environment that lacks antenna locations with an unobstructed view of the sky. "We have included another helpful feature that monitors the health of individual GPS satellites," said Datum-Irvine Vice President of Engineering Bill Goshay. "Our system won't adversely affect its own accuracy by picking up a malfunctioning satellite's signal." The StarLoc II Plus is calibration-free under normal operating conditions and supports all base station applications such as CDMA (Code Division Multiple Access) A method for transmitting simultaneous signals over a shared portion of the spectrum. The foremost application of CDMA is the digital cellular phone technology from QUALCOMM that operates in the 800 MHz band and 1.9 GHz PCS band. , TDMA (Time Division Multiple Access) A satellite and cellular phone technology that interleaves multiple digital signals onto a single high-speed channel. For cellular, TDMA triples the capacity of the original analog method (FDMA). , cellular, LMDS (Local Multipoint Distribution Service) A digital wireless transmission system that works in the 28 GHz range in the U.S. and 24-40 GHz overseas. It requires line of sight between transmitter and receiving antenna, which can be from one to four miles apart , MMDS (Multichannel Multipoint Distribution Service or Microwave Multipoint Distribution Service) A digital wireless transmission system that works in the 2.2-2.4 GHz range. , wireless local loop, asset location, and E911. It is available as a stand-alone version, including housing and power regulation or in an OEM (Original Equipment Manufacturer) The rebranding of equipment and selling it. The term initially referred to the company that made the products (the "original" manufacturer), but eventually became widely used to refer to the organization that buys the products and version for direct integration. More information listing the milestones of Datum-Irvine's Rubidium oscillator technology can be found at http://www.datum.com/anniversary_30th.html. About Datum Inc. Headquartered in Irvine, Calif., Datum designs, manufactures and markets advanced, cost-effective network synchronization, timing and frequency solutions for telecommunications, computer networks, satellite systems, and test and measurement applications. With more than 150,000 solutions in operation worldwide, Datum is the world's leading supplier of embedded and external carrier-class synchronization solutions. Additional information about the critical role of timing is available at www.datum.com. X72, StarLoc II Plus and Snapshot are trademarks of Datum Inc. |
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