Operation Manual Part 1

Digital Liquid Cooled UHF
TV Equipment
Detailed operational description
9946 V1
45321648.01 104 A E
preliminary
31 / 131
Numéro / Number Doc. Rev. Lan
g
u.
16/06/2006
Pa
g
e
Information contained is this document is confidential, is THOMSON property and cannot be disclosed in whatever form without prior written authorization of THOMSON.
2.4.2.2. Window control system
The window control system effects a real time update on the data base which contains the data to be
displayed in the various windows of the PCL or the remote user interface.
The updated data are sent to the PCL and to the remote user interface. Hence the database is
duplicated in the following sub units:
♦ Central processing unit,
♦ PCL,
♦ Remote user interface.
When the operator calls up a window to the PCL screen, the request is simultaneously sent to the PCL
database and to the CPU display system. The window together with its contents is then sent to the
PCL screen:
♦ either via the PCL data base if the windows are type A windows (“CONTROL”, “EXCITER”,
“INTLOCK”, “PSUPPLY”, ...). Type A windows do not contain any specific data linked to the
transmitter configuration.
♦ or, the data base attached to the display control system in the Central Processing Unit, if the
windows are type B windows ("AMPLI", "CONTROL OPER", "CONTROL MAINT",...). Type B
windows contain specific data linked to the transmitter configuration.
The remote user interface data from the data base can be used independently of the window call up
requests from the PCL (in the case of a serial link).
Control system for the hardwired connections
The processing of the hardwired commands and data system is supervised by the display control
system and deals mainly with events data from the "polling of events data" system.