ACCUEIL L'ENTREPRISE ACTUALITE SUPPORT CONTACTS GPS USB PCMCIA Cartes de communication Cartes mémoires Flash Stockage OEM Modules DRAM Composants mémoires Programmateurs Service programmation   Solutions GPS   RECEPTEURS Copernicus Lassen DR+GPS Lassen SK-II Lassen LP Lassen iQ Lassen SQ NLC-SKII TIMING Acutime Gold Mini-T Resolution T BOITIERS GPS NLC-232 NLC-422 SURVEILLANCE TrimTrac TrailTrac Trailer Box ANTENNES Bullet III Hardmount Antennes miniatures Série NGA ACCESSOIRES Ré-émetteur GPS LG Kit Meca Câbles RF Mini-T GPS Disciplined Clock for the Wireless Infrastructure PRELIMINARY SPECIFICATION (subject to change) Introduction The Mini-T GPS Disciplined Clock is Trimble's latest offering for GPS synchronization devices targeting the wireless infrastructure. Unlike previous models which used conventional ASICs, this new module (like the Resolution T) implements the satellite receiver functionality using a commercially available, general purpose Digital Signal Processor (DSP). Due to this flexibility, this product will be upgradeable in the field to Galileo L1 compatibility when the code structure becomes available. The Mini-T timing receiver was implemented to test the technical feasibility and the cost effectiveness of the flexible DSP approach. Applications Reference Source for 10 MHz Frequency, 1PPS Sync Pulse & a Digital Time Stamp 10 MHz Freq Ref source for TX/RX Synthesizer Sync TX times of Base Stations or Repeaters 10 MHz Frequency Reference Only Wireless Paging Systems E911 Location Based Services - LBS BroadBand Wireless Internet Access Radio Systems - Voice and Data HDTV and Satellite Stations Laboratory and Manufacturing Facilities Test Equipment OEM's, No Calibration Req'd Mini-T Technical Data Performance Specifications : General: L1 (1575.42 MHz) frequency, C/A code (SPS), 12-channel, continuous tracking receiver Update rate: 1 Hz 1 PPS Accuracy: GPS 20 nanoseconds (one sigma) without SA Output Frequency 10 MHz Phase Noise 10 Hz -120 dBc 100 Hz -135 dBc 1 KHz -145 dBc 10 KHz -145 dBc 100 KHz -145 dBc Environmental Specifications : Operating temp: 0°C to +60°C Storage temp: –40°C to +85°C Operating Humidity: 5% to 95% R.H. non-condensing, @ +60°C Operating Altitude: 18.000 m Interface Specifications: 1 PPS: Connector: SMA-f (J3) TTL levels into 50 ohms 10 microsecond-wide pulse with the leading edge synchronized to GPS within 20 nanoseconds (one sigma) in static, time-only mode. Rising time: <20 nanoseconds Pulse shape affected by distributed capacitance of interface cable/circuit. 10 MHz Connector: SMA-f (J2) Antenna Interface SMA-f (J4) Power and I/O Connector: Molex 70543-0005 (6-pin) (J1) Pin 1 - NC Pin 2 - GPS TXD 3.3V CMOS Level Pin 3 - GPS RXD 3.3V CMOS Level (5V tolerant) - Pulled to 3.3V through a 10k Ohm resistor Pin 4 - Ground Pin 5 - +V Antenna - Supports 2.7VDC to 5.5VDC @ up to 100mA Pin 6 - +5V 0.25V @ <750mA (cold) and <350mA (warm) Serial Protocol Trimble Standard Interface Protocol (TSIP) binary protocol @9600, 8-None-1 Physical Characteristics: Mounting Four .130" diameter mounting holes Mechanical Outline drawing available upon request Mechanical Outline © Naelcom 2008 - Haut de la page