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> Sync Products > OEM Solutions > OSA 4500 Clock Series
OSA 4500 OEM Clocks
> OSA 4500 Clock Series

GPS, GLONASS or PPS-based High Precision Clocks providing very High Stability and Accurate Frequency and Phase to the host system

OSA 4500 OEM Clock - GPS, GLONASS or PPS input

HIGHLIGHTS

  • High frequency stability and long term accuracy, both Input-locked and Holdover mode
  • Economic, reliable and highly compact board level integration
  • 1 to 4 1PPS and 10MHz outputs of each type, avoiding the host equipment a useless and noisy distribution / amplification stage
  • Phase alignment of all outputs within ±10ns with “0 crossing” 1PPS / 10MHz
  • Quick and easy integration thanks to a wide range of connectivity, such as board to board, ribbon cable or
    coax connectors
  • Available in several Oscillator choices, providing different degree of accuracy, low phase noise, stability & holdover capability
  • Optional PPS or GLONASS input
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GENERAL INFO

The OSA 4500 provides higher grade synchronization at minimal cost and minimal space. Based on the high performance Double Oven Oscillator OSA 8663, up to four 1 PPS and four 10 MHz outputs deliver time and frequency at a high level of accuracy and stability.

A comprehensive command set via RS232 serial line is available for the OSA 4500 management, allowing alarm reporting and full equipment control. The OSA 4500 is also very easy to integrate, highly reliable and totally maintenance-free.

Numerous types of integration can be accommodated thanks to the OSA 4500 versatility, to easily adapting any integration into base stations, broadcast stations and such equipment, as an OEM timing clock solution.

TECHNICAL INFORMATION

OSA 4500 with GPS Clock

The OSA 4500 time and frequency is derived from the Global Positioning System (GPS). Up to 12 satellites can be tracked and a “position fix” mode is automatically trigged to reach higher stability. When no valid GPS reference input is available, the OSA 4500 enters in holdover mode and holds its output frequencies to supply long hours of frequency and phase accuracies. With ATDC system implemented, the OSA 4500 provides superior holdover stability, reaching phase variations lower than 5μs per day. A comprehensive command set via RS232 serial line is available for the OSA 4500 management, allowing alarm reporting and full equipment control. The OSA 4500 is also very easy to

OSA 4500 with GLONASS + GPS Clock

The OSA 4500 is also available with GLONASS+GPS receiver, which offers combined GLONASS and GPS signal reception to supply highly reliable synchronization clock from the two world’s largest Global Navigation Satellite System (GNSS); the renowned Global Positioning System (GPS) and the promising Russian Federation’s GLObal NAvigation Satellite System (GLONASS).

Holdover

When no valid GNSS reference input is available, the OSA 4500 enters in holdover mode and holds its output frequencies to supply long hours of frequency and phase accuracies.

ATDC (Aging and Themperature Drift Compensation)

Enhanced with its Aging and Temperature Drift Compensation (ATDC) system, the OSA 4500 becomes the most stable GPS quartz clock ever seen in holdover mode, especially in large temperature variations environment and harsh conditions. Thus, the OSA 4500 provides superior holdover stability, reaching phase variations lower than 5μs per day.

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Typical Applications

  • Synchronization of Wireless base station wherever frequency and phase accuracy are required, e.g. UMTS-TDD, TD-SCDMA., WiMAX-TDD, WiMAX IEEE 802.16e. WIBRO, 3G and 4G Base stations
  • Synchronization of DAB and DVB-T and DVB-H base stations
  • Sync sources for test equipment and instruments
  • Power utilities and public services
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TECHNICAL SPECIFICATIONS

Input

  • GPS: 16-channel receiver
  • GLONASS: 24-channel receiver
  • PPS

Holdover performances

  • Long term stability : from 3x10-11/day to 1x10E-09, depending on OCXO type
  • Frequency stability (-5°C to +55°C): from 2x10-10 pp to 5x 10-8, depending on OCXO type

Management

  • RS-232C local management
  • Alarm dry contacts
  • 1x or 4x TOD (Time-Of-Day) outputs compliant to NMEA-0183
  • GUI-based Configuration and Monitoring software
  • Field upgradeable

Power

  • 12 VDC ±5%
  • 12 Watts at warm-up, 8 Watts
    steady state (at 25°C)

Outputs

  • 1 to 4x 10 MHz sine outputs :
    • 0.5 or 1 VRMS ± 30%, Sine wave, 50Ω or LVCMOS
    • Short term stability (with OCXO 8663): 0.2 sec to 10 sec @ <1x10-11
  • 1x 10 MHz square output :
    • 2.4 or 3.3 VPP, LVCMOS, 50Ω
  • 1 to 4x 1PPS outputs:
    • 2.4 or 3.3 VPP, Square, 50Ω (others opt.) or LVCMOS
    • Rise Time: < 20ns

GPS Antenna and Cable

  • Choice of antenna cable :
    • 20m (LMR-400)
    • 60m (LMR-400)
    • 120m (LMR-400 w/ amplifier)
    • up to 300m (CellFlex cable)
    • other cable lengths on request
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4500 GPS Datasheet
4500 GLONASS Datasheet
   
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Oscilloquartz SA
Brévards 16
2002 Neuchâtel
Switzerland

phone :
+4132 722 5555

fax :
+4132 722 5556


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