The ViaLiteHD from ViaLite is a GNSS/GPS RF-over-Fiber Link that operates from 1000 to 1800 MHz. It has a transmission distance of more than 50 km and can be used for GPS, GALILEO, GLONASS, and BeiDou constellations. This link is designed to transport all common GPS-type signals that connect the antenna to distant equipment such as time servers, repeaters, DAS systems, Tetra, and cellular base stations. It can be configured as single point-to-point, fully redundant, as well as point-to-multipoint receive points via optical splitting. This RF-over-fiber link provides a Tx and Rx gain adjustment range of 15.5 dB, has a noise figure of 15 dB (at default gain), and an SFDR of 109 dB/Hz.
The transmitter link powers and monitors the GPS antenna. If the antenna fails, it passes the fault to the internal equipment, allowing an antenna fault to be displayed internally. The receiver has an antenna spoofing output, which allows customer equipment to believe it has a hard-wired antenna attached. This spoofing is switched off if the receiver has any major alarm, which will, in turn, force an alarm in the attached customer equipment. The ViaLiteHD GNSS/GPS RF-over-Fiber Link is suitable as a GPS/timing input for network time servers, DAS and remote cellular base stations, GPS test systems and tetra base stations. It is also ideal for re-radiating in aviation hangers, government and manufacturing facilities.
