What does Vision Carrier provide?
Vision Carrier is the digital live video transmission bearer facility provider islandwide to be used mainly in Occasional TV signal transmission.

What can Vision Carrier do?
Transmit and/or receive Audio-Visual Programmes from remote locations on Live or Delayed Telecast modes.

How many channels can vision carrier provide?
Two (02) from a single location on uni-directional basis, or on (01) from a single location with bi-directional transmission capabilities. A total of five video channels can be handled simultaneously from multiple locations.

How does vision carrier achieve reliability?
Input switching arrangements with dual path protection system provides full system availability in case of failure in the network.

What is the set-up time?
The centralised PC controlled SLT backbone network has reduced the set-up time to a few minutes.

What is the video-audio formats?
Standard analogue and Digital formats are available.

Who can use vision carrier?
Local and international TV broadcast companies and TV reporters, video post production companies, video advertising agencies, programme material approving authorities, primary distribution companies, etc. can enjoy this facility.

Who will provide outside broadcast facilities?
Outside broadcast facilities including links at remote sites from and to the point where the live telecast originates or terminates to be provided by the user. If the programme is of Delayed Dispatch mode, the user should provide the camcorder to the nearest SLT station. (ENG rooms of SLT in Anuradhapura, Kandy, Galle, Badulla, Ratnapura and Hambantota.)

Who is responsible for the material contents?
It is the client's responsibility to provide required approval from relevant authorities or provide evidence that such approval is not required.

What are the special features?
• Islandwide digital video transmission bearers.
• High quality next generation Digital Video Broadcast (DVB) standards.
• Via new generation, high capacity digital microwave bearers and optical fibre cables.
• Necessary contribution and distribution quality standards.
• Dual path feed with input switching arrangements.
• Compressed or uncompressed video formats.
• Uni-directional or bi-directional.
• CD quality audio (stereo or mono).

What are the standards of vision carrier interface?
• Video Analogue
   PAL/PAL PLUS/SECAM/NTSC (self adaptive)
• Video Digital
   Parallel 4:2:2 (ITU-R 656)
   D-I Serial 4:2:2 (ITU-R Rec 656)
• Audio Analogue
   Upto 15kHz/20kHz stereo or mono
• Audio Digital
   NICAM 728 NB/S (Available on customers' request)
   AES/EBU (ITU-R Rec 724) (Available on customers' request)
• Teletext (Available on customers' request)

Applications
• Live telecast of special events.
• Live news from remote locations.
• Domestic extensions of international up/down link programmes.
• Live TV conferencing facilities.
• Electronic News Gathering Services (ENG) for regional TV reporters and
   international TV broadcasters.
• Video Access Link services (from studio premises to SLT Headquarters).

Additional services in the pipeline
• Studios with live TV conferencing facilities meeting broadcast quality standards.
• Switched video applications.
• Tele learning.
• Primary distribution.
• Video Access Links (from studio premises up to TV transmitting stations on
   mountain tops).
• More video channels from single locations.
• Coverage extension to smaller villages.