The ViaLite GNSS/GPS over fiber link allows for timing distribution and accurate synchronization using GPS-derived timing signals. The links are a reliable method for transporting GPS signals from antennas to receivers/re-radiators, and provide a simple solution for signal distribution over long distances and to inaccessible locations.
The ViaLite GPS link has been designed with very low noise and a lower minimum signal level – allowing for very low level signals to be transported from the antenna.
For situations where redundancy is required – for maximum signal uptime and integrity – the GPS is available in single or dual redundant configuration.
All ViaLiteHD GPS products come with alarm and antenna spoofing as standard. This allows the GPS antenna to be sensed by the RF over fiber transmitter and – if the antenna fails – the transmitter switches off its laser, forcing a fault condition at the receiver end. This allows the user to know there is a fault in the system. In addition, the receiver supplies the resistive load needed by time servers to spoof a copper connection to the antenna. If there is a fault seen at the receiver, it will switch off this load causing a fault condition in the time server – again, allowing the user to know there is a fault in the system.
With increased congestion on metropolitan roof space and increased costs for locating antennas on roof spaces, further to advances in distance and splitting techniques, it is now possible to have single antennas split multiple ways to different buildings or to multiple floors in a single building.
The MiFID is the Markets in Financial Instruments Directive (Directive 2004/39/EC). MiFID has been in force since November 2007 and MiFID II is set to take effect from 3rd January 2018. The directive governs the provision of investment services in financial instruments by banks and investment firms and the operation of traditional stock exchanges and alternative trading venues. The ViaLite GPS link allows financial institutions etc. to comply with this standard.
Read about MiFID and GPS time distribution in data centers.
The ViaLite ODE-A4 GPS and Satcom6 units are popular enclosures for the GPS link.
|Link gain (Tx /Rx) nom||0(-5 / +5)dB|
|Noise figure(typ)||15 dB|
|Industry||GPS/GNSS, Time & Synchronization, Military|
|Form Factor||Rack Chassis Card, Blue OEM Module, Yellow OEM Module|