Operation Manual Part 1

Digital Liquid Cooled UHF
TV Equipment
Generale description
9946 V1
45321648.01 104 A E
preliminary
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Numéro / Number Doc. Rev. Lan
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16/06/2006
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Information contained is this document is confidential, is THOMSON property and cannot be disclosed in whatever form without prior written authorization of THOMSON.
1. General description
1.1. Outline
The purpose of the transmitter is to broadcast a digital signal by modulating a carrier in the UHF and
VHF bands.
The transmitters can operate with the ATSC , DVB-T or MEDIAFLO standards.
These transmitters belong to a new range of UHF or VHF units between 0.8 and 19 kW and have
been designed using the modular construction concept.
Each individual transmitter is designed for specific values of power output and frequency, but is
constructed from a set of modules which are all part of an overall system design.
This standardisation brings the following advantages, when several different transmitters from the
same range are in use :
♦ maintenance personnel who have become experienced on a particular piece of equipment can
easily deal with another transmitter type.
♦ there is a decrease in the stock of spare parts required because of the use of common building
blocks.
Operating the transmitters is straightforward and completely automatic. The equipment, the monitoring
systems and the transmission parameters are all automatically supervised by the system.
Operator control of monitoring and operation of the transmitter can take place from a user interface
situated either at the transmitter or at a remote location.
The equipment has been designed for minimum down-time and maximum reliability. Faults in certain
modules and the need for interventions from maintenance staff are minimised by the inherent
redundancy of the modular architecture; this also reduces the need to interrupt transmissions.
The transmitter can have the SD (Simple Drive) configuration or the DD (Double Drive) configuration.
By the use of redundant transmitter components, the Dual Drive Version provides increased
operational reliability.