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> Sync Products > Time & Frequency > OSA 4530 GPS-LN
OSA 4530 GPS-LN - Low Noise
> OSA 4530 GPS-LN

Low Phase Noise GPS Receiver

HIGHLIGHTS
  • 10 Mhz low phase noise Output
  • Economic, reliable and compact, in the standard 5” x 4”x 2” format
  • Provides UTC-derived timing information through:
    • UTC-locked PPS output
    • TOD compliant to NMEA0183
  • Integrated high stability holdover functionality:
    • Frequency stability < 1 x10-10 /day (typical)
  • ITU- T G.811 / ST1 compliant when locked to GPS
  • ITU-T G.812 (I, V, VI) compliant holdover
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GENERAL INFO

Introduction
Oscilloquartz has built the engine of its highly successful OSA 5581C GPS-SR into a single casing format complete with an integrated power supply (12V or 24V / 48V), so as to provide Time & Frequency solution to customers requesting a highly compact single input/output timing unit and needing a 10MHz low phase noise output.

The 1 PPS and 10MHz outputs make them ideal for synchronising DAB/DVB equipment.

Features
The OSA 4530 GPS-LN provides standard 1 PPS, low noise 10 MHz and TOD (Time Of Day) outputs referenced to UTC1. The OSA 430 GPS-LN includes a highly accurate ovencontrolled oscillator, which filters the reference signal and provides a holdover quality comparable to that of an SSU in case of loss of external reference.

Control Software
The OSA 4530 GPS-LN is manageable via the OSA Control and Monitoring (CM) software that gives full control on all its functionalities via an intuitive MS-Windows based graphical user interface.

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Typical Applications

  • GPS-based synchronisation for cellular networks like UMTS, GPRS and CDMA
  • Synchronization of DAB and DVB equipment
  • Specialised ATM and LAN/WAN sync requirements
  • Sync sources for test equipment and instruments
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TECHNICAL SPECIFICATIONS

Antenna cable

  • Choice of antenna cable :
    • 20m (LMR-400)
    • 60m (LMR-400)
    • 120m (LMR-400 w/ amplifier)
    • up to 300m (CellFlex cable)

10 MHz Low Noise Output

  • Amplitude: 7 dBm / ± 2dBm
  • Impedance: 50 ohms
  • Harmonic distortion -40 dB
  • Non-harmonic distortion: -70dB

PPS Output

  • 200ms width
  • < 20ns rise time
  • 2.5 Vpp/50 Ω

Performance when locked to GPS-signal

  • 1 PPS accuracy:
    • < 100 ns pp (at constant temp.)
    • < 150 ns pp (at variable temperature, -5°C to +55°C)
  • ADEV < 10-12 (10’000 seconds)

SSB Phase Noise

  10 MHz
1Hz - 95dBc
10Hz - 125dBc
100Hz - 145dBc
1'000Hz - 150dBc
10'000Hz - 150dBc

Management

  • RS -232C on DB9 connector
  • 1 alarm relay contact
  • TOD (Time-Of-Day) output compliant to NMEA0183
  • GUI-based Configuration and Monitoring software

Environmental characteristics

  • Operational: -5°C to +55°C
  • Storage: -40°C to +85°C
  • Humidity: 95% non-condensing
  • CE mark: EN50081/ EN50082 / EN60950
  • Constructed for working under harsh conditions, as described in ETS 300-019-2-3.2
  • Physical (HxWxD): 50,8mm(2”)x101.5mm(4”)x127.0mm(5”)

Hold-Over performances

  • Long term stability : 1x10-10/day, 2x10-8/year
  • Frequency stability: 6x10-10 pp (-5°C to +55°C)

Connectors:

  • BNC
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Oscilloquartz SA
Brévards 16
2002 Neuchâtel
Switzerland

phone :
+4132 722 5555

fax :
+4132 722 5556

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