Harris ADC Device Server User’s Guide
Introduction 9
◆ cart machines
◆ video disk servers
◆ external VTRs (VTRs not in cart machines)
◆ routing switchers
◆ master control switchers
◆ still stores
◆ character generators
◆ audio carts
◆ external encoders and decoders
◆ subtitling systems
◆ satellite systems
RS422 connections are used between the Device Server and the broadcast devices.
Some broadcast devices do not interface to RS422. These devices can be controlled through
GPI-type connections with relay contacts.
Play Lists and Transmission Lists
Play lists are files that contain the schedules of events to be played, recorded or compiled. In a
play list, each event contains information such as start time, event type, material identification
(ID), title, segment number, duration, start of message and channel output.
Play lists can be created locally at the Air Client workstations or from traffic schedules. Play
lists are stored at the file server and are available to all users on the system for viewing and
editing. When a play list is ready for transmission, the list is loaded into the transmission
window and becomes a transmission list.
The ADC Device Server supports multiple transmission lists. Each list can contain 2,500
events by default (this number can be expanded to a larger number if necessary. Contact
Harris.).
When an event in the transmission list is activated, the event performs a predefined function
such as Play, Record, Switch or Cue. The ADC Device Server supports multiple transmission
lists; each list can be made up of several appended playlists.
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General