COMPANY COMPANY News News Product News from Raltron Electronics Corporation NEXT GENERATION CLOCK SYNCHRONIZATION MODULE FROM RALTRON INCORPORATES GPS For immediate release Miami, Florida - October 7, 2003: Raltron Electronics has just announced details of an enhanced version of its well-accepted family of Synchronization modules, which now incorporates a GPS receiver. This new product from Raltron is targeted at the wireless infrastructure market and network equipment manufacturers of CDMA 2000, W-CDMA, GSM. GPRS, EDGE, UMTS, and other wireless base station equipment. The new SY-SGC1 clock module combines a precision oven controlled crystal oscillator; a 12-channel parallel tracking GPS engine, associated control circuitry, and all on one reliably designed board. The oven controlled crystal oscillator provides an accurate and low phase noise reference signal at 10 MHz. A proprietary algorithm steers and disciplines the oven-controlled oscillator and locks it to the GPS signal. This provides an accuracy of 7 microseconds within 24 hours, thus offering a more cost effective and smaller replacement for the Rubidium oscillator used in base station applications. The unit operates in three different modes; GPS locked, Holdover mode and External Lock. The GPS Receiver obtains the signal from an externally mounted antenna. There are five synchronized outputs, 10MHz sinusoidal, 10MHz square wave, 1PPS, and additional user defined outputs. Other input sources can be a Cesium Standard, local oscillator, T1/E1 line, or any external signal up to 80 MHz. Operating voltage is at 48VDC with a power consumption of 12W and an operating temperature range of –20 to + 70°C. Customization is available in both operation performance and mechanical size. The SY-SGC1 advanced level of integration makes the module the perfect solution for precise time and frequency management applications in the wireless industry. Raltron’s new SY-GSCI Module pricing and delivery is based on customer specifications. For detailed specifications, price and delivery quotations; contact Raltron at their corporate Miami headquarters: Raltron Electronics Corporation 10651 NW 19th Street, Miami, FL 33172 Tel. (305) 593-6033 Fax: (305) 594-3973 Web: www.raltron.com E-Mail: [email protected] Europe Israel Korea Founded in 1983, Raltron Electronics, Corp. is a world leader in the design and manufacture of Japan China frequency management products including a large variety of timing crystals, crystal oscillators, VCO’s, VCXOs, TCXOs, OCXOs, filters, ceramic resonators and other high precision frequency control products. It is a privately held ISO-9001 certified company with facilities in Miami, Japan, Korea, China, Singapore, Taiwan, Israel and Europe and its products are marketed through a worldwide network of independently owned representatives and distributors. Press Contact: Taiwan Tod Raphaely (305) 593-6033 Singapore Raltron Electronics Corporation 10651 NW 19th St. Miami, Florida 33172 U.S.A. Tel: 305-593-6033 Fax: 305-594-3973 e-mail: [email protected] Internet: http://www.raltron.com SYNCHRONOUS EQUIPMENT OEM GPS Time and Frequency Reference – SY-GSC1 SY-GSC1 Date: September 2003 PRELIMINARY • INTRODUCTION The SY-GSC1 is an accurate time and frequency source that has been designed as a subsystem level module. The module is designed to work within wireless base station systems where synchronization is vital. The SY-GSC1 integrates a GPS receiver with a disciplined ovenized oscillator and control circuitry on single board to provide precision time and frequency synchronization required by high-speed digital networks and systems. • FEATURES √ An time and frequency synchronization solution for wireless base station timing. √ GPS receiver with twelve-channel parallel tracking. √ Ovenized Crystal Oscillator provides stable 10MHz output in holdover. √ Enhanced holdover accuracy provided by clock disciplining algorithm. √ Three outputs generate frequencies up to 80MHz. √ External synchronization input - T1/E1 uses as secondary reference. √ Alarm, status signals and messages. √ Host communication interfaces for configuring and remote monitoring UART, SPI and parallel. √ Redundant operation provided by two units. √ Compact dimensions. √ Low cost solution for timing. • APPLICATION The SY-GSC1 is a low cost timing source that can be easily integrated into system equipment to meet the needs of a variety of applications. Included are wireless infrastructure systems, such as, CDMA2000, WCDMA, GSM and E911 location systems. The module also can be used in other systems or equipment for ATM, SDH, PDH, and SONET networks. Wherever a timing unit with high performance specifications is required, the SY-GSC1 can be embedded within the network system and provide all necessary frequencies and interfaces. The SY-GSC1 can also be used as timing reference in laboratories and manufacturing facilities. th RALTRON ELECTRONICS CORP. 10651 N.W.19 St Florida 33172 U.S.A. Tel: 305 593-6033 Fax: 305-594-3973 e-mail: [email protected] Internet: http://www.raltron.com SYNCHRONOUS EQUIPMENT OEM GPS Time and Frequency Reference – SY-GSC1 DC/DC Converter Power Mgm. ANTENNA GPS RECEIVER POWER OCXO OUT 1 T1/E1 LIU 1pps Input DSP, FPGA, RAM, FLASH, DDS 1 PPS Generator Out PLL Synthesizers Voltage and Temperature Measurement OUT 2 OUT 3 OUT 4 OUT 5 COMM PORTS UART, SPI and Parallel Figure 1. - The functional block diagram of SY-SGC1. • DESCRIPTION The architecture of SY-GSC1 is shown on the Figure 1. The module operates in three different modes GPS Locked, Holdover mode and Lock to an external reference. A control algorithm provides the switching between the modes. The GPS Locked mode is when the module is locked to signal coming from GPS. This is when GPS receiver has acquired enough satellites to provide a valid timing signal. The Holdover mode is when there is no valid timing signal at the receiver output and the OCXO frequency is compensated by software in regard of temperatures, aging and power supply variations. The unit can also be locked to an external reference if available. The GPS receiver gets signal from externally mounted antenna. The active micro strip patch antenna molded in plastic, and powered by receiver, is specially designed for timing application. The receiver is controlled and monitored by microprocessor so at any given time the integrity of GPS signal can be evaluated. The signal from the receiver is processed by clock algorithm implemented in DSP and used to control the OCXO (Ovenized Crystal Oscillator) during the GPS Locked mode. During that time a clock model implemented in software is continuously updated. When the GPS signal lost its integrity the local oscillator continue to be disciplined by the clock model data. The module provides five synchronized outputs sinusoidal 10MHz, square 10MHz, 1 PPS and additional custom defined outputs. The communication ports supports standard interfaces such as RS232, SPI or parallel to be easily control from host computer or other terminal equipment. The isolated DC/DC converter provides wide range of input voltages. The additional input signal is used during calibration and testing of the module but also can be used as additional synchronized signal where is available. Raltron is able to customize SY-GSC1 to customer requirements. th RALTRON ELECTRONICS CORP. 10651 N.W.19 St Florida 33172 U.S.A. Tel: 305 593-6033 Fax: 305-594-3973 e-mail: [email protected] Internet: http://www.raltron.com SYNCHRONOUS EQUIPMENT OEM GPS Time and Frequency Reference – SY-GSC1 • SPECIFICATIONS General Specifications Inputs Output Signals GPS Receiver Mechanical Power Supply Power Operating Temperature Humidity Internal Oscillators GPS antenna External signal Number of Outputs Output 1 Output 2 Output 3 Output 4 Output 5 Receiver Architecture Acquisition Time Communication Ports Frequency Output Performance < 20 s typical TTFF-hot (1) < 50 s typical TTFF-warm (2) < 450 s typical TTFF-cold < 1.0 s internal reacquisition (typical) Antenna to Receiver Interconnection Single coaxial cable Antenna sense circuit Antenna Active micro strip patch antenna module Tracking Capability Serial Interface UART Protocol Parallel Protocol Serial Peripheral Interface SPI Protocol 12 simultaneous satellites RS232 Raltron Interface Protocol, binary @ 9600, 8-N-1 8 or 16 bit parallel DARAM/MMR 8 or 16 bit fast serial MMR -11 For one day average Frequency accuracy ≤1x10 Time accuracy ±50ns relative to UTC -11 Root Allan Variance ≤5x10 , 100s averaging time ≤-90dBc @ 10Hz ≤-120dBc @ 100Hz ≤-130dBc @ 1kHz ≤-145dBc @ 10kHz ≤-145dBc @ 100kHz ≤-30dBc ≤-70dBc Time Domain stability Phase Noise @ 10MHz Harmonics @ 10MHz Spurious @ 10MHz Oscillator Temperature Performance • 160mm(D) x 100mm(W) x 35mm(H) -48VDC ±20% 12W -20°C to 70°C 5% to 95% non-condensing High stability SC-cut OCXO L1 GPS 1575.42MHz C/A T1/E1 and 10MHz or 1pps 5 10MHz, Sinus @ 50ohm, 13dBm ± 2dBm 1pps LVTTL 10MHz LVTTL, LVDS, LVPECL 0.5pps to 80MHz LVTTL, LVDS, LVPECL 0.5pps to 80MHz LVTTL, LVDS, LVPECL 12 parallel channels L1 1575.42 MHz, C/A code (1.023 MHz chip rate) Code plus carrier tracking (carrier aided tracking) -9 ≤8x10 typical -10 Oscillator Aging ≤7x10 per day average frequency change Holdover <8µs over 8h max. Temperature change of ±15°C after 24h locked to GPS OEM board Other available on request Depending of the OCXO Other available on request Depending of required stability Optional synch input User defines User defines (1)-with current almanac, position, time and ephemeris (2)-with current almanac, position and time Powered by receiver module (5-80 mA @ 5 Vdc) User define Other available on request Contact Raltron Contact Raltron Locked to GPS Locked to GPS Locked to GPS Not locked to GPS, no disciplining software Not locked to GPS, no disciplining software For tighter spec. Contact Raltron ORDERING INFORMATION For part number please contact Raltron Electronics Corp. th RALTRON ELECTRONICS CORP. 10651 N.W.19 St Florida 33172 U.S.A. Tel: 305 593-6033 Fax: 305-594-3973 e-mail: [email protected] Internet: http://www.raltron.com