Train to Track

Function

  • Upon external command, the digital Transmitter in each carrriage transmits the video from up to four cameras installed in the carriage in a quad split screen format, or from any single camera in a full screen format.

  • The transmission, on one of several channels, is received by two Trackside Antennas and a common Receiver which can be up to 30 km away if there is a line of sight, or 2 km if there is no line of sight

  • The Antenna and Receiver combinations are installed at a number of sites on the track to ensure that reception is always available to to least one site at all times irrespective of the train's position

  • Two antennas are used to provide space and polarisation diversity
  • The Receiver demodulates the video signals and selects the best for onward transmission to the control centre. A further automatic video selection process takes place within the control centre to select the Receiver that provides the best video. All the switching is within nS to provide rock solid pictures irrespective of the train's position or speed
Specification
Frequency
Video channels
Simultaneous Videos
System Range
Availability
Signal to Noise
Video quality
Operating Temperature
Radio Specifications
Railway Specifications
Sealing - Trackside Units
Sealing - Trainborne Units
EMC Specifications
RF Hazard
1 to 24 GHz bands
8 at 1 GHz, 30 at 24 GHz
1 per carriage
Up to 30 km LoS and 2 km NLoS
100% in all weathers
55 dB
CCIR grade 4.8 installed
-20C to +70C
ETSI EN 300 632 or equivalent
RIA12, RIA13 and RIA20
IP66 and IP67
IP55
ETSI EN 300 339
None - safe all distances
The specifications provided are general guidelines. The precise values are dependent on the actual configuration of the equipment. We would be delighted to address your specific requirements. Please use the "Contact Us" page.
Trainborne Transmitter

Internal camera view of carriage