Technical data

Chapter 1 - System Description
Introduction
Optimized for the Alvarion eMGW/MGW System, the GPS Receiver is a
complete, stand-alone, Global Positioning System (GPS) Time and
Frequency generator. It has been designed to provide a stable signal
source which possesses the long-term stability of a cesium clock, but at
a fraction of the cost.
This equipment provides an accurate Primary Reference Source (PRS)
for applications requiring absolute timing/frequency accuracy.
Developed with flexibility in mind, the GPS Receiver delivers precise
measurement and control of both Time and Frequency for
synchronizing the Alvarion eMGW/MGW System anywhere in the world,
without the need for calibration.
The GPS Receiver comprises a GPS receiver integrated with a stable
OCXO oscillator, within a unit designed for mounting in a standard 19
inch telecommunications rack system. A 50 meter coaxial cable
connects an active antenna to the GPS receiver.
The GPS Receiver Timing Receiver contains a GPS receiver, power
supply module, oscillator, and the basic output connections. LEDs on
the front panel display status information.
If the satellite signal is interrupted, the GPS Receiver enters a holdover
mode which typically maintains frequency to better than ±5x10
-10
per
day. When the GPS signal is restored, the GPS Receiver automatically
reverts to normal operation mode.
The GPS Receiver is designed for automatic operation without the need
for user intervention. It can however, be accessed via a serial port for
configuration and debug purposes.
NOTE
It is essential to adhere to the specified power supply rating if serious damage to the
GPS Receiver is to be avoided.
GPS Timing Receiver Installation and Operation Manual
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